Prepare release v2.8.0

Co-authored-by: Tom Moulard <tom.moulard@traefik.io>

.github/PULL_REQUEST_TEMPLATE.md

@@ -3,11 +3,11 @@ PLEASE READ THIS MESSAGE.
 
 Documentation fixes or enhancements:
 - for Traefik v1: use branch v1.7
-- for Traefik v2: use branch v2.7
+- for Traefik v2: use branch v2.8
 
 Bug fixes:
 - for Traefik v1: use branch v1.7
-- for Traefik v2: use branch v2.7
+- for Traefik v2: use branch v2.8
 
 Enhancements:
 - for Traefik v1: we only accept bug fixes

.golangci.toml

@@ -174,6 +174,8 @@
     "SA1019: cfg.SSLHost is deprecated",
     "SA1019: cfg.SSLForceHost is deprecated",
     "SA1019: cfg.FeaturePolicy is deprecated",
+    "SA1019: c.Providers.ConsulCatalog.Namespace is deprecated",
+    "SA1019: c.Providers.Consul.Namespace is deprecated",
   ]
  [[issues.exclude-rules]]
     path = "(.+)_test.go"

.semaphore/semaphore.yml

@@ -64,7 +64,7 @@ blocks:
         - name: GH_VERSION
           value: 1.12.1
         - name: CODENAME
-          value: "epoisses"
+          value: "vacherin"
         - name: IN_DOCKER
           value: ""
       prologue:

CHANGELOG.md

@@ -1,3 +1,36 @@
+## [v2.8.0](https://github.com/traefik/traefik/tree/v2.8.0) (2022-06-29)
+[All Commits](https://github.com/traefik/traefik/compare/v2.8.0-rc1...v2.8.0)
+
+**Enhancements:**
+- **[consul,consulcatalog]** Support multiple namespaces for Consul and ConsulCatalog providers ([#8979](https://github.com/traefik/traefik/pull/8979) by [rtribotte](https://github.com/rtribotte))
+- **[http3]** Upgrade quic-go to v0.27.0 ([#8922](https://github.com/traefik/traefik/pull/8922) by [tomMoulard](https://github.com/tomMoulard))
+- **[http3]** Upgrade quic-go to v0.26.0 ([#8874](https://github.com/traefik/traefik/pull/8874) by [sylr](https://github.com/sylr))
+- **[logs]** Add destination address to debug log ([#9032](https://github.com/traefik/traefik/pull/9032) by [qmloong](https://github.com/qmloong))
+- **[middleware,provider,tls]** Deprecate caOptional option in client TLS configuration ([#8960](https://github.com/traefik/traefik/pull/8960) by [kevinpollet](https://github.com/kevinpollet))
+- **[middleware]** Support URL replacement in errors middleware ([#8956](https://github.com/traefik/traefik/pull/8956) by [tomMoulard](https://github.com/tomMoulard))
+- **[middleware]** Allow config of additional CircuitBreaker params ([#8907](https://github.com/traefik/traefik/pull/8907) by [aidy](https://github.com/aidy))
+- **[provider]** Implement Traefik provider for Nomad orchestrator ([#9018](https://github.com/traefik/traefik/pull/9018) by [shoenig](https://github.com/shoenig))
+- **[server]** Allow HTTP/2 max concurrent stream configuration ([#8781](https://github.com/traefik/traefik/pull/8781) by [tomMoulard](https://github.com/tomMoulard))
+- **[tls,k8s/crd]** Support certificates configuration in TLSStore CRD ([#8976](https://github.com/traefik/traefik/pull/8976) by [kevinpollet](https://github.com/kevinpollet))
+- **[webui,pilot,hub]** Add Traefik Hub button and deprecate Pilot ([#9091](https://github.com/traefik/traefik/pull/9091) by [ldez](https://github.com/ldez))
+- **[webui,plugins]** Reach the catalog of plugins from the Traefik dashboard ([#9055](https://github.com/traefik/traefik/pull/9055) by [seedy](https://github.com/seedy))
+
+**Bug fixes:**
+- **[nomad]** Use configured token in the Nomad client ([#9111](https://github.com/traefik/traefik/pull/9111) by [kevinpollet](https://github.com/kevinpollet))
+
+**Documentation:**
+- Prepare release v2.8.0-rc2 ([#9134](https://github.com/traefik/traefik/pull/9134) by [rtribotte](https://github.com/rtribotte))
+- Prepare release v2.8.0-rc1 ([#9097](https://github.com/traefik/traefik/pull/9097) by [rtribotte](https://github.com/rtribotte))
+
+**Misc:**
+- Merge current v2.7 into v2.8 ([#9142](https://github.com/traefik/traefik/pull/9142) by [rtribotte](https://github.com/rtribotte))
+- Merge current v2.7 into v2.8 ([#9133](https://github.com/traefik/traefik/pull/9133) by [rtribotte](https://github.com/rtribotte))
+- Merge current v2.7 into master ([#9095](https://github.com/traefik/traefik/pull/9095) by [rtribotte](https://github.com/rtribotte))
+- Merge current v2.7 into master ([#9085](https://github.com/traefik/traefik/pull/9085) by [tomMoulard](https://github.com/tomMoulard))
+- Merge current v2.7 into master ([#9060](https://github.com/traefik/traefik/pull/9060) by [rtribotte](https://github.com/rtribotte))
+- Merge current v2.7 into master ([#9052](https://github.com/traefik/traefik/pull/9052) by [rtribotte](https://github.com/rtribotte))
+- Merge current v2.7 into master ([#8959](https://github.com/traefik/traefik/pull/8959) by [tomMoulard](https://github.com/tomMoulard))
+
 ## [v2.7.3](https://github.com/traefik/traefik/tree/v2.7.3) (2022-06-29)
 [All Commits](https://github.com/traefik/traefik/compare/v2.7.2...v2.7.3)
 
@@ -7,6 +40,15 @@
 **Documentation:**
 - **[middleware,k8s/crd]** Add documentation for main, SANs and plugin CRD fields ([#9136](https://github.com/traefik/traefik/pull/9136) by [mloiseleur](https://github.com/mloiseleur))
 
+## [v2.8.0-rc2](https://github.com/traefik/traefik/tree/v2.8.0-rc2) (2022-06-27)
+[All Commits](https://github.com/traefik/traefik/compare/v2.8.0-rc1...v2.8.0-rc2)
+
+**Bug fixes:**
+- **[nomad]** Use configured token in the Nomad client ([#9111](https://github.com/traefik/traefik/pull/9111) by [kevinpollet](https://github.com/kevinpollet))
+
+**Misc:**
+- Merge current v2.7 into v2.8 ([#9133](https://github.com/traefik/traefik/pull/9133) by [rtribotte](https://github.com/rtribotte))
+
 ## [v2.7.2](https://github.com/traefik/traefik/tree/v2.7.2) (2022-06-27)
 [All Commits](https://github.com/traefik/traefik/compare/v2.7.1...v2.7.2)
 
@@ -26,6 +68,30 @@
 - Update to improve info section relevance ([#9130](https://github.com/traefik/traefik/pull/9130) by [tomatokoolaid](https://github.com/tomatokoolaid))
 - Added useful links for commercial applications ([#9129](https://github.com/traefik/traefik/pull/9129) by [tomatokoolaid](https://github.com/tomatokoolaid))
 
+## [v2.8.0-rc1](https://github.com/traefik/traefik/tree/v2.8.0-rc1) (2022-06-13)
+[All Commits](https://github.com/traefik/traefik/compare/v2.7.0-rc1...v2.8.0-rc1)
+
+**Enhancements:**
+- **[consul,consulcatalog]** Support multiple namespaces for Consul and ConsulCatalog providers ([#8979](https://github.com/traefik/traefik/pull/8979) by [rtribotte](https://github.com/rtribotte))
+- **[http3]** Upgrade quic-go to v0.27.0 ([#8922](https://github.com/traefik/traefik/pull/8922) by [tomMoulard](https://github.com/tomMoulard))
+- **[http3]** Upgrade quic-go to v0.26.0 ([#8874](https://github.com/traefik/traefik/pull/8874) by [sylr](https://github.com/sylr))
+- **[logs]** Add destination address to debug log ([#9032](https://github.com/traefik/traefik/pull/9032) by [qmloong](https://github.com/qmloong))
+- **[middleware,provider,tls]** Deprecate caOptional option in client TLS configuration ([#8960](https://github.com/traefik/traefik/pull/8960) by [kevinpollet](https://github.com/kevinpollet))
+- **[middleware]** Support URL replacement in errors middleware ([#8956](https://github.com/traefik/traefik/pull/8956) by [tomMoulard](https://github.com/tomMoulard))
+- **[middleware]** Allow config of additional CircuitBreaker params ([#8907](https://github.com/traefik/traefik/pull/8907) by [aidy](https://github.com/aidy))
+- **[provider]** Implement Traefik provider for Nomad orchestrator ([#9018](https://github.com/traefik/traefik/pull/9018) by [shoenig](https://github.com/shoenig))
+- **[server]** Allow HTTP/2 max concurrent stream configuration ([#8781](https://github.com/traefik/traefik/pull/8781) by [tomMoulard](https://github.com/tomMoulard))
+- **[tls,k8s/crd]** Support certificates configuration in TLSStore CRD ([#8976](https://github.com/traefik/traefik/pull/8976) by [kevinpollet](https://github.com/kevinpollet))
+- **[webui,pilot,hub]** Add Traefik Hub button and deprecate Pilot ([#9091](https://github.com/traefik/traefik/pull/9091) by [ldez](https://github.com/ldez))
+- **[webui,plugins]** Reach the catalog of plugins from the Traefik dashboard ([#9055](https://github.com/traefik/traefik/pull/9055) by [seedy](https://github.com/seedy))
+
+**Misc:**
+- Merge current v2.7 into master ([#9095](https://github.com/traefik/traefik/pull/9095) by [rtribotte](https://github.com/rtribotte))
+- Merge current v2.7 into master ([#9085](https://github.com/traefik/traefik/pull/9085) by [tomMoulard](https://github.com/tomMoulard))
+- Merge current v2.7 into master ([#9060](https://github.com/traefik/traefik/pull/9060) by [rtribotte](https://github.com/rtribotte))
+- Merge current v2.7 into master ([#9052](https://github.com/traefik/traefik/pull/9052) by [rtribotte](https://github.com/rtribotte))
+- Merge current v2.7 into master ([#8959](https://github.com/traefik/traefik/pull/8959) by [tomMoulard](https://github.com/tomMoulard))
+
 ## [v2.7.1](https://github.com/traefik/traefik/tree/v2.7.1) (2022-06-13)
 [All Commits](https://github.com/traefik/traefik/compare/v2.7.0...v2.7.1)
 

cmd/traefik/traefik.go

@@ -216,7 +216,7 @@ func setupServer(staticConfiguration *static.Configuration) (*server.Server, err
 	}
 
 	if staticConfiguration.Pilot != nil {
-		version.PilotEnabled = staticConfiguration.Pilot.Dashboard
+		log.WithoutContext().Warn("Traefik Pilot is deprecated and will be removed soon. Please check our Blog for migration instructions later this year.")
 	}
 
 	// Plugins

docs/content/deprecation/features.md

@@ -2,10 +2,11 @@
 
 This page is maintained and updated periodically to reflect our roadmap and any decisions around feature deprecation.
 
-| Feature                                               | Deprecated | End of Support | Removal |
-|-------------------------------------------------------|------------|----------------|---------|
-| [Pilot Dashboard (Metrics)](#pilot-dashboard-metrics) | 2.7        | 2.8            | 2.9     |
-| [Pilot Plugins](#pilot-plugins)                       | 2.7        | 2.8            | 2.9     |
+| Feature                                                       | Deprecated | End of Support | Removal |
+|---------------------------------------------------------------|------------|----------------|---------|
+| [Pilot Dashboard (Metrics)](#pilot-dashboard-metrics)         | 2.7        | 2.8            | 2.9     |
+| [Pilot Plugins](#pilot-plugins)                               | 2.7        | 2.8            | 2.9     |
+| [Consul Enterprise Namespaces](#consul-enterprise-namespaces) | 2.8        | TBD            | TBD     |
 
 ## Impact
 
@@ -18,3 +19,8 @@ In 2.9, the Pilot platform and all Traefik integration code will be permanently
 
 Starting on 2.7 the pilot token will not be a requirement anymore.  
 At 2.9, a new plugin catalog home should be available, decoupled from pilot.
+
+### Consul Enterprise Namespaces
+
+Starting on 2.8 the `namespace` option of Consul and Consul Catalog providers is deprecated, 
+please use the `namespaces` options instead.  

docs/content/getting-started/configuration-overview.md

@@ -79,7 +79,7 @@ traefik --help
 # or
 
 docker run traefik[:version] --help
-# ex: docker run traefik:v2.7 --help
+# ex: docker run traefik:v2.8 --help
 ```
 
 All available arguments can also be found [here](../reference/static-configuration/cli.md).

docs/content/getting-started/install-traefik.md

@@ -16,12 +16,12 @@ You can install Traefik with the following flavors:
 
 Choose one of the [official Docker images](https://hub.docker.com/_/traefik) and run it with one sample configuration file:
 
-* [YAML](https://raw.githubusercontent.com/traefik/traefik/v2.7/traefik.sample.yml)
-* [TOML](https://raw.githubusercontent.com/traefik/traefik/v2.7/traefik.sample.toml)
+* [YAML](https://raw.githubusercontent.com/traefik/traefik/v2.8/traefik.sample.yml)
+* [TOML](https://raw.githubusercontent.com/traefik/traefik/v2.8/traefik.sample.toml)
 
 ```bash
 docker run -d -p 8080:8080 -p 80:80 \
-    -v $PWD/traefik.yml:/etc/traefik/traefik.yml traefik:v2.7
+    -v $PWD/traefik.yml:/etc/traefik/traefik.yml traefik:v2.8
 ```
 
 For more details, go to the [Docker provider documentation](../providers/docker.md)
@@ -29,7 +29,7 @@ For more details, go to the [Docker provider documentation](../providers/docker.
 !!! tip
 
     * Prefer a fixed version than the latest that could be an unexpected version.
-    ex: `traefik:v2.7`
+    ex: `traefik:v2.8`
     * Docker images are based from the [Alpine Linux Official image](https://hub.docker.com/_/alpine).
     * Any orchestrator using docker images can fetch the official Traefik docker image.
 

docs/content/getting-started/quick-start.md

@@ -20,7 +20,7 @@ version: '3'
 services:
   reverse-proxy:
     # The official v2 Traefik docker image
-    image: traefik:v2.7
+    image: traefik:v2.8
     # Enables the web UI and tells Traefik to listen to docker
     command: --api.insecure=true --providers.docker
     ports:

docs/content/https/tls.md

@@ -364,8 +364,9 @@ spec:
 
 ### Strict SNI Checking
 
-With strict SNI checking enabled, Traefik won't allow connections from clients
-that do not specify a server_name extension or don't match any certificate configured on the tlsOption.
+With strict SNI checking enabled, Traefik won't allow connections from clients that do not specify a server_name extension
+or don't match any of the configured certificates.
+The default certificate is irrelevant on that matter.
 
 ```yaml tab="File (YAML)"
 # Dynamic configuration

docs/content/middlewares/http/circuitbreaker.md

@@ -176,15 +176,18 @@ This behavior cannot be configured.
 
 ### `CheckPeriod`
 
-The interval used to evaluate `expression` and decide if the state of the circuit breaker must change.
-By default, `CheckPeriod` is 100ms. This value cannot be configured.
+_Optional, Default="100ms"_
+
+The interval between successive checks of the circuit breaker condition (when in standby state).
 
 ### `FallbackDuration`
 
-By default, `FallbackDuration` is 10 seconds. This value cannot be configured.
+_Optional, Default="10s"_
 
-### `RecoveringDuration`
+The duration for which the circuit breaker will wait before trying to recover (from a tripped state).
 
-The duration of the recovering mode (recovering state).
+### `RecoveryDuration`
 
-By default, `RecoveringDuration` is 10 seconds. This value cannot be configured.
+_Optional, Default="10s"_
+
+The duration for which the circuit breaker will try to recover (as soon as it is in recovering state).

docs/content/middlewares/http/errorpages.md

@@ -1,16 +1,16 @@
 ---
-title: "Traefik ErrorPage Documentation"
-description: "In Traefik Proxy, the ErrorPage middleware returns custom pages according to configured ranges of HTTP Status codes. Read the technical documentation."
+title: "Traefik Errors Documentation"
+description: "In Traefik Proxy, the Errors middleware returns custom pages according to configured ranges of HTTP Status codes. Read the technical documentation."
 ---
 
-# ErrorPage
+# Errors
 
 It Has Never Been Easier to Say That Something Went Wrong
 {: .subtitle }
 
-![ErrorPages](../../assets/img/middleware/errorpages.png)
+![Errors](../../assets/img/middleware/errorpages.png)
 
-The ErrorPage middleware returns a custom page in lieu of the default, according to configured ranges of HTTP Status codes.
+The Errors middleware returns a custom page in lieu of the default, according to configured ranges of HTTP Status codes.
 
 !!! important
 
@@ -21,16 +21,16 @@ The ErrorPage middleware returns a custom page in lieu of the default, according
 ```yaml tab="Docker"
 # Dynamic Custom Error Page for 5XX Status Code
 labels:
-  - "traefik.http.middlewares.test-errorpage.errors.status=500-599"
-  - "traefik.http.middlewares.test-errorpage.errors.service=serviceError"
-  - "traefik.http.middlewares.test-errorpage.errors.query=/{status}.html"
+  - "traefik.http.middlewares.test-errors.errors.status=500-599"
+  - "traefik.http.middlewares.test-errors.errors.service=serviceError"
+  - "traefik.http.middlewares.test-errors.errors.query=/{status}.html"
 ```
 
 ```yaml tab="Kubernetes"
 apiVersion: traefik.containo.us/v1alpha1
 kind: Middleware
 metadata:
-  name: test-errorpage
+  name: test-errors
 spec:
   errors:
     status:
@@ -43,32 +43,32 @@ spec:
 
 ```yaml tab="Consul Catalog"
 # Dynamic Custom Error Page for 5XX Status Code
-- "traefik.http.middlewares.test-errorpage.errors.status=500-599"
-- "traefik.http.middlewares.test-errorpage.errors.service=serviceError"
-- "traefik.http.middlewares.test-errorpage.errors.query=/{status}.html"
+- "traefik.http.middlewares.test-errors.errors.status=500-599"
+- "traefik.http.middlewares.test-errors.errors.service=serviceError"
+- "traefik.http.middlewares.test-errors.errors.query=/{status}.html"
 ```
 
 ```json tab="Marathon"
 "labels": {
-  "traefik.http.middlewares.test-errorpage.errors.status": "500-599",
-  "traefik.http.middlewares.test-errorpage.errors.service": "serviceError",
-  "traefik.http.middlewares.test-errorpage.errors.query": "/{status}.html"
+  "traefik.http.middlewares.test-errors.errors.status": "500-599",
+  "traefik.http.middlewares.test-errors.errors.service": "serviceError",
+  "traefik.http.middlewares.test-errors.errors.query": "/{status}.html"
 }
 ```
 
 ```yaml tab="Rancher"
 # Dynamic Custom Error Page for 5XX Status Code
 labels:
-  - "traefik.http.middlewares.test-errorpage.errors.status=500-599"
-  - "traefik.http.middlewares.test-errorpage.errors.service=serviceError"
-  - "traefik.http.middlewares.test-errorpage.errors.query=/{status}.html"
+  - "traefik.http.middlewares.test-errors.errors.status=500-599"
+  - "traefik.http.middlewares.test-errors.errors.service=serviceError"
+  - "traefik.http.middlewares.test-errors.errors.query=/{status}.html"
 ```
 
 ```yaml tab="File (YAML)"
 # Custom Error Page for 5XX
 http:
   middlewares:
-    test-errorpage:
+    test-errors:
       errors:
         status:
           - "500-599"
@@ -82,7 +82,7 @@ http:
 ```toml tab="File (TOML)"
 # Custom Error Page for 5XX
 [http.middlewares]
-  [http.middlewares.test-errorpage.errors]
+  [http.middlewares.test-errors.errors]
     status = ["500-599"]
     service = "serviceError"
     query = "/{status}.html"
@@ -121,8 +121,17 @@ The service that will serve the new requested error page.
 !!! info "Host Header"
 
     By default, the client `Host` header value is forwarded to the configured error [service](#service).
-    To forward the `Host` value corresponding to the configured error service URL, the [passHostHeader](../../../routing/services/#pass-host-header) option must be set to `false`.     
+    To forward the `Host` value corresponding to the configured error service URL, the [passHostHeader](../../../routing/services/#pass-host-header) option must be set to `false`.
 
 ### `query`
 
-The URL for the error page (hosted by `service`). You can use the `{status}` variable in the `query` option in order to insert the status code in the URL.
+The URL for the error page (hosted by [`service`](#service))).
+
+There are multiple variables that can be placed in the `query` option to insert values in the URL.
+
+The table below lists all the available variables and their associated values.
+
+| Variable   | Value                                                              |
+|------------|--------------------------------------------------------------------|
+| `{status}` | The response status code.                                          |
+| `{url}`    | The [escaped](https://pkg.go.dev/net/url#QueryEscape) request URL. |

docs/content/middlewares/http/forwardauth.md

@@ -426,70 +426,6 @@ http:
       ca = "path/to/local.crt"
 ```
 
-#### `caOptional`
-
-_Optional_
-
-The value of `caOptional` defines which policy should be used for the secure connection with TLS Client Authentication to the authentication server.
-
-!!! warning ""
-
-    If `ca` is undefined, this option will be ignored, and no client certificate will be requested during the handshake. Any provided certificate will thus never be verified.
-
-When this option is set to `true`, a client certificate is requested during the handshake but is not required. If a certificate is sent, it is required to be valid.
-
-When this option is set to `false`, a client certificate is requested during the handshake, and at least one valid certificate should be sent by the client.
-
-```yaml tab="Docker"
-labels:
-  - "traefik.http.middlewares.test-auth.forwardauth.tls.caOptional=true"
-```
-
-```yaml tab="Kubernetes"
-apiVersion: traefik.containo.us/v1alpha1
-kind: Middleware
-metadata:
-  name: test-auth
-spec:
-  forwardAuth:
-    address: https://example.com/auth
-    tls:
-      caOptional: true
-```
-
-```yaml tab="Consul Catalog"
-- "traefik.http.middlewares.test-auth.forwardauth.tls.caOptional=true"
-```
-
-```json tab="Marathon"
-"labels": {
-  "traefik.http.middlewares.test-auth.forwardauth.tls.caOptional": "true"
-}
-```
-
-```yaml tab="Rancher"
-labels:
-  - "traefik.http.middlewares.test-auth.forwardauth.tls.caOptional=true"
-```
-
-```yaml tab="File (YAML)"
-http:
-  middlewares:
-    test-auth:
-      forwardAuth:
-        address: "https://example.com/auth"
-        tls:
-          caOptional: true
-```
-
-```toml tab="File (TOML)"
-[http.middlewares]
-  [http.middlewares.test-auth.forwardAuth]
-    address = "https://example.com/auth"
-    [http.middlewares.test-auth.forwardAuth.tls]
-      caOptional = true
-```
-
 #### `cert`
 
 _Optional_

docs/content/migration/v1-to-v2.md

@@ -109,7 +109,7 @@ Then any router can refer to an instance of the wanted middleware.
 
     ```yaml tab="K8s IngressRoute"
     # The definitions below require the definitions for the Middleware and IngressRoute kinds.
-    # https://doc.traefik.io/traefik/v2.7/reference/dynamic-configuration/kubernetes-crd/#definitions
+    # https://doc.traefik.io/traefik/v2.8/reference/dynamic-configuration/kubernetes-crd/#definitions
     apiVersion: traefik.containo.us/v1alpha1
     kind: Middleware
     metadata:
@@ -280,7 +280,7 @@ Then, a [router's TLS field](../routing/routers/index.md#tls) can refer to one o
 
     ```yaml tab="K8s IngressRoute"
     # The definitions below require the definitions for the TLSOption and IngressRoute kinds.
-    # https://doc.traefik.io/traefik/v2.7/reference/dynamic-configuration/kubernetes-crd/#definitions
+    # https://doc.traefik.io/traefik/v2.8/reference/dynamic-configuration/kubernetes-crd/#definitions
     apiVersion: traefik.containo.us/v1alpha1
     kind: TLSOption
     metadata:

docs/content/migration/v2.md

@@ -457,3 +457,19 @@ the value for the method label becomes `EXTENSION_METHOD`, instead of the reques
 ### Tracing
 
 In `v2.6.1`, the Datadog tags added to a span changed from `service.name` to `traefik.service.name` and from `router.name` to `traefik.router.name`.
+
+## v2.8
+
+### TLS client authentication
+
+In `v2.8`, the `caOptional` option is deprecated as TLS client authentication is a server side option.
+This option available in the ForwardAuth middleware, as well as in the HTTP, Consul, Etcd, Redis, ZooKeeper, Marathon, Consul Catalog, and Docker providers has no effect and must not be used anymore.
+
+### Consul Enterprise Namespaces
+
+In `v2.8`, the `namespace` option of Consul and Consul Catalog providers is deprecated, please use the `namespaces` options instead.
+
+### Traefik Pilot
+
+In `v2.8`, the `pilot.token` and `pilot.dashboard` options are deprecated.
+Please check our Blog for migration instructions later this year.

docs/content/observability/access-logs.md

@@ -254,7 +254,7 @@ version: "3.7"
 
 services:
   traefik:
-    image: traefik:v2.7
+    image: traefik:v2.8
     environment:
       - TZ=US/Alaska
     command:

docs/content/providers/consul-catalog.md

@@ -393,37 +393,6 @@ providers:
 --providers.consulcatalog.endpoint.tls.ca=path/to/ca.crt
 ```
 
-##### `caOptional`
-
-_Optional_
-
-The value of `caOptional` defines which policy should be used for the secure connection with TLS Client Authentication to Consul Catalog.
-
-!!! warning ""
-
-    If `ca` is undefined, this option will be ignored, and no client certificate will be requested during the handshake. Any provided certificate will thus never be verified.
-
-When this option is set to `true`, a client certificate is requested during the handshake but is not required. If a certificate is sent, it is required to be valid.
-
-When this option is set to `false`, a client certificate is requested during the handshake, and at least one valid certificate should be sent by the client.
-
-```yaml tab="File (YAML)"
-providers:
-  consulCatalog:
-    endpoint:
-      tls:
-        caOptional: true
-```
-
-```toml tab="File (TOML)"
-[providers.consulCatalog.endpoint.tls]
-  caOptional = true
-```
-
-```bash tab="CLI"
---providers.consulcatalog.endpoint.tls.caoptional=true
-```
-
 ##### `cert`
 
 _Optional_
@@ -556,7 +525,7 @@ providers:
 ```
 
 ```bash tab="CLI"
---providers.consulcatalog.defaultRule="Host(`{{ .Name }}.{{ index .Labels \"customLabel\"}}`)"
+--providers.consulcatalog.defaultRule=Host(`{{ .Name }}.{{ index .Labels \"customLabel\"}}`)
 # ...
 ```
 
@@ -700,30 +669,76 @@ For additional information, refer to [Restrict the Scope of Service Discovery](.
 
 ### `namespace`
 
+??? warning "Deprecated in favor of the [`namespaces`](#namespaces) option."
+
+    _Optional, Default=""_
+    
+    The `namespace` option defines the namespace in which the consul catalog services will be discovered.
+    
+    !!! warning
+    
+        The namespace option only works with [Consul Enterprise](https://www.consul.io/docs/enterprise),
+        which provides the [Namespaces](https://www.consul.io/docs/enterprise/namespaces) feature.
+    
+    !!! warning
+    
+        One should only define either the `namespaces` option or the `namespace` option.
+    
+    ```yaml tab="File (YAML)"
+    providers:
+      consulCatalog:
+        namespace: "production" 
+        # ...
+    ```
+    
+    ```toml tab="File (TOML)"
+    [providers.consulCatalog]
+      namespace = "production"
+      # ...
+    ```
+    
+    ```bash tab="CLI"
+    --providers.consulcatalog.namespace=production
+    # ...
+    ```
+
+### `namespaces`
+
 _Optional, Default=""_
 
-The `namespace` option defines the namespace in which the consul catalog services will be discovered.
+The `namespaces` option defines the namespaces in which the consul catalog services will be discovered.
+When using the `namespaces` option, the discovered configuration object names will be suffixed as shown below:
+
+```text
+<resource-name>@consulcatalog-<namespace>
+```
 
 !!! warning
 
-    The namespace option only works with [Consul Enterprise](https://www.consul.io/docs/enterprise),
+    The namespaces option only works with [Consul Enterprise](https://www.consul.io/docs/enterprise),
     which provides the [Namespaces](https://www.consul.io/docs/enterprise/namespaces) feature.
 
+!!! warning
+
+    One should only define either the `namespaces` option or the `namespace` option.
+
 ```yaml tab="File (YAML)"
 providers:
   consulCatalog:
-    namespace: "production" 
+    namespaces: 
+      - "ns1"
+      - "ns2"
     # ...
 ```
 
 ```toml tab="File (TOML)"
 [providers.consulCatalog]
-  namespace = "production"
+  namespaces = ["ns1", "ns2"]
   # ...
 ```
 
 ```bash tab="CLI"
---providers.consulcatalog.namespace=production
+--providers.consulcatalog.namespaces=ns1,ns2
 # ...
 ```
 

docs/content/providers/consul.md

@@ -61,30 +61,76 @@ providers:
 
 ### `namespace`
 
+??? warning "Deprecated in favor of the [`namespaces`](#namespaces) option."
+
+    _Optional, Default=""_
+    
+    The `namespace` option defines the namespace to query.
+    
+    !!! warning
+    
+        The namespace option only works with [Consul Enterprise](https://www.consul.io/docs/enterprise),
+        which provides the [Namespaces](https://www.consul.io/docs/enterprise/namespaces) feature.
+    
+    !!! warning
+    
+        One should only define either the `namespaces` option or the `namespace` option.
+    
+    ```yaml tab="File (YAML)"
+    providers:
+      consul:
+        # ...
+        namespace: "production"
+    ```
+    
+    ```toml tab="File (TOML)"
+    [providers.consul]
+      # ...
+      namespace = "production"
+    ```
+    
+    ```bash tab="CLI"
+    --providers.consul.namespace=production
+    ```
+
+### `namespaces`
+
 _Optional, Default=""_
 
-The `namespace` option defines the namespace to query.
+The `namespaces` option defines the namespaces to query.
+When using the `namespaces` option, the discovered configuration object names will be suffixed as shown below:
+
+```text
+<resource-name>@consul-<namespace>
+```
 
 !!! warning
 
-    The namespace option only works with [Consul Enterprise](https://www.consul.io/docs/enterprise),
+    The namespaces option only works with [Consul Enterprise](https://www.consul.io/docs/enterprise),
     which provides the [Namespaces](https://www.consul.io/docs/enterprise/namespaces) feature.
 
+!!! warning
+
+    One should only define either the `namespaces` option or the `namespace` option.
+
 ```yaml tab="File (YAML)"
 providers:
   consul:
+    namespaces: 
+      - "ns1"
+      - "ns2"
     # ...
-    namespace: "production"
 ```
 
 ```toml tab="File (TOML)"
 [providers.consul]
+  namespaces = ["ns1", "ns2"]
   # ...
-  namespace = "production"
 ```
 
 ```bash tab="CLI"
---providers.consul.namespace=production
+--providers.consul.namespaces=ns1,ns2
+# ...
 ```
 
 ### `username`
@@ -185,36 +231,6 @@ providers:
 --providers.consul.tls.ca=path/to/ca.crt
 ```
 
-#### `caOptional`
-
-_Optional_
-
-The value of `caOptional` defines which policy should be used for the secure connection with TLS Client Authentication to Consul.
-
-!!! warning ""
-
-    If `ca` is undefined, this option will be ignored, and no client certificate will be requested during the handshake. Any provided certificate will thus never be verified.
-
-When this option is set to `true`, a client certificate is requested during the handshake but is not required. If a certificate is sent, it is required to be valid.
-
-When this option is set to `false`, a client certificate is requested during the handshake, and at least one valid certificate should be sent by the client.
-
-```yaml tab="File (YAML)"
-providers:
-  consul:
-    tls:
-      caOptional: true
-```
-
-```toml tab="File (TOML)"
-[providers.consul.tls]
-  caOptional = true
-```
-
-```bash tab="CLI"
---providers.consul.tls.caOptional=true
-```
-
 #### `cert`
 
 _Optional_

docs/content/providers/docker.md

@@ -257,7 +257,7 @@ See the sections [Docker API Access](#docker-api-access) and [Docker Swarm API A
 
     services:
       traefik:
-         image: traefik:v2.7 # The official v2 Traefik docker image
+         image: traefik:v2.8 # The official v2 Traefik docker image
          ports:
            - "80:80"
          volumes:
@@ -643,36 +643,6 @@ providers:
 --providers.docker.tls.ca=path/to/ca.crt
 ```
 
-#### `caOptional`
-
-_Optional_
-
-The value of `caOptional` defines which policy should be used for the secure connection with TLS Client Authentication to Docker.
-
-!!! warning ""
-
-    If `ca` is undefined, this option will be ignored, and no client certificate will be requested during the handshake. Any provided certificate will thus never be verified.
-
-When this option is set to `true`, a client certificate is requested during the handshake but is not required. If a certificate is sent, it is required to be valid.
-
-When this option is set to `false`, a client certificate is requested during the handshake, and at least one valid certificate should be sent by the client.
-
-```yaml tab="File (YAML)"
-providers:
-  docker:
-    tls:
-      caOptional: true
-```
-
-```toml tab="File (TOML)"
-[providers.docker.tls]
-  caOptional = true
-```
-
-```bash tab="CLI"
---providers.docker.tls.caOptional=true
-```
-
 #### `cert`
 
 `cert` is the path to the public certificate used for the secure connection to Docker.

docs/content/providers/etcd.md

@@ -134,36 +134,6 @@ providers:
 --providers.etcd.tls.ca=path/to/ca.crt
 ```
 
-#### `caOptional`
-
-_Optional_
-
-The value of `caOptional` defines which policy should be used for the secure connection with TLS Client Authentication to etcd.
-
-!!! warning ""
-
-    If `ca` is undefined, this option will be ignored, and no client certificate will be requested during the handshake. Any provided certificate will thus never be verified.
-
-When this option is set to `true`, a client certificate is requested during the handshake but is not required. If a certificate is sent, it is required to be valid.
-
-When this option is set to `false`, a client certificate is requested during the handshake, and at least one valid certificate should be sent by the client.
-
-```yaml tab="File (YAML)"
-providers:
-  etcd:
-    tls:
-      caOptional: true
-```
-
-```toml tab="File (TOML)"
-[providers.etcd.tls]
-  caOptional = true
-```
-
-```bash tab="CLI"
---providers.etcd.tls.caOptional=true
-```
-
 #### `cert`
 
 _Optional_

docs/content/providers/http.md

@@ -105,36 +105,6 @@ providers:
 --providers.http.tls.ca=path/to/ca.crt
 ```
 
-#### `caOptional`
-
-_Optional_
-
-The value of `caOptional` defines which policy should be used for the secure connection with TLS Client Authentication to the endpoint.
-
-!!! warning ""
-
-    If `ca` is undefined, this option will be ignored, and no client certificate will be requested during the handshake. Any provided certificate will thus never be verified.
-
-When this option is set to `true`, a client certificate is requested during the handshake but is not required. If a certificate is sent, it is required to be valid.
-
-When this option is set to `false`, a client certificate is requested during the handshake, and at least one valid certificate should be sent by the client.
-
-```yaml tab="File (YAML)"
-providers:
-  http:
-    tls:
-      caOptional: true
-```
-
-```toml tab="File (TOML)"
-[providers.http.tls]
-  caOptional = true
-```
-
-```bash tab="CLI"
---providers.http.tls.caOptional=true
-```
-
 #### `cert`
 
 _Optional_

docs/content/providers/kubernetes-crd.md

@@ -35,10 +35,10 @@ the Traefik engineering team developed a [Custom Resource Definition](https://ku
 
     ```bash
     # Install Traefik Resource Definitions:
-    kubectl apply -f https://raw.githubusercontent.com/traefik/traefik/v2.7/docs/content/reference/dynamic-configuration/kubernetes-crd-definition-v1.yml
+    kubectl apply -f https://raw.githubusercontent.com/traefik/traefik/v2.8/docs/content/reference/dynamic-configuration/kubernetes-crd-definition-v1.yml
     
     # Install RBAC for Traefik:
-    kubectl apply -f https://raw.githubusercontent.com/traefik/traefik/v2.7/docs/content/reference/dynamic-configuration/kubernetes-crd-rbac.yml
+    kubectl apply -f https://raw.githubusercontent.com/traefik/traefik/v2.8/docs/content/reference/dynamic-configuration/kubernetes-crd-rbac.yml
     ```
 
 ## Resource Configuration

docs/content/providers/kubernetes-ingress.md

@@ -500,4 +500,4 @@ providers:
 ### Further
 
 To learn more about the various aspects of the Ingress specification that Traefik supports,
-many examples of Ingresses definitions are located in the test [examples](https://github.com/traefik/traefik/tree/v2.7/pkg/provider/kubernetes/ingress/fixtures) of the Traefik repository.
+many examples of Ingresses definitions are located in the test [examples](https://github.com/traefik/traefik/tree/v2.8/pkg/provider/kubernetes/ingress/fixtures) of the Traefik repository.

docs/content/providers/marathon.md

@@ -432,36 +432,6 @@ providers:
 --providers.marathon.tls.ca=path/to/ca.crt
 ```
 
-#### `caOptional`
-
-_Optional_
-
-The value of `caOptional` defines which policy should be used for the secure connection with TLS Client Authentication to Marathon.
-
-!!! warning ""
-
-    If `ca` is undefined, this option will be ignored, and no client certificate will be requested during the handshake. Any provided certificate will thus never be verified.
-
-When this option is set to `true`, a client certificate is requested during the handshake but is not required. If a certificate is sent, it is required to be valid.
-
-When this option is set to `false`, a client certificate is requested during the handshake, and at least one valid certificate should be sent by the client.
-
-```yaml tab="File (YAML)"
-providers:
-  marathon:
-    tls:
-      caOptional: true
-```
-
-```toml tab="File (TOML)"
-[providers.marathon.tls]
-  caOptional = true
-```
-
-```bash tab="CLI"
---providers.marathon.tls.caOptional=true
-```
-
 #### `cert`
 
 _Optional_

docs/content/providers/nomad.md

@@ -0,0 +1,465 @@
+---
+title: "Nomad Service Discovery"
+description: "Learn how to use Nomad as a provider for configuration discovery in Traefik Proxy. Read the technical documentation."
+---
+
+# Traefik & Nomad Service Discovery
+
+A Story of Tags, Services & Nomads
+{: .subtitle }
+
+![Nomad Service Discovery](../assets/img/providers/nomad.png)
+
+Attach tags to your Nomad services and let Traefik do the rest!
+
+## Configuration Examples
+
+??? example "Configuring Nomad & Deploying Services"
+
+    Enabling the nomad provider
+
+    ```yaml tab="File (YAML)"
+    providers:
+      nomad: {}
+    ```
+
+    ```toml tab="File (TOML)"
+    [providers.nomad]
+    ```
+
+    ```bash tab="CLI"
+    --providers.nomad=true
+    ```
+
+    Attaching tags to services:
+
+    ```
+    ...
+    service {
+      name = "myService"
+      tags = [
+        "traefik.http.routers.my-router.rule=Host(`example.com`)",
+      ]
+    }
+    ...
+    ```
+
+## Routing Configuration
+
+See the dedicated section in [routing](../routing/providers/nomad.md).
+
+## Provider Configuration
+
+### `refreshInterval`
+
+_Optional, Default=15s_
+
+Defines the polling interval.
+
+```yaml tab="File (YAML)"
+providers:
+  nomad:
+    refreshInterval: 30s
+    # ...
+```
+
+```toml tab="File (TOML)"
+[providers.nomad]
+  refreshInterval = "30s"
+  # ...
+```
+
+```bash tab="CLI"
+--providers.nomad.refreshInterval=30s
+# ...
+```
+
+### `prefix`
+
+_required, Default="traefik"_
+
+The prefix for Nomad service tags defining Traefik labels.
+
+```yaml tab="File (YAML)"
+providers:
+  nomad:
+    prefix: test
+    # ...
+```
+
+```toml tab="File (TOML)"
+[providers.nomad]
+  prefix = "test"
+  # ...
+```
+
+```bash tab="CLI"
+--providers.nomad.prefix=test
+# ...
+```
+
+### `stale`
+
+_Optional, Default=false_
+
+Use stale consistency for Nomad service API reads.
+
+!!! note ""
+
+    This makes reads very fast and scalable at the cost of a higher likelihood of stale values.
+
+    For more information, see the Nomad [documentation on consistency](https://www.nomadproject.io/api-docs#consistency-modes).
+
+```yaml tab="File (YAML)"
+providers:
+  nomad:
+    stale: true
+    # ...
+```
+
+```toml tab="File (TOML)"
+[providers.nomad]
+  stale = true
+  # ...
+```
+
+```bash tab="CLI"
+--providers.nomad.stale=true
+# ...
+```
+
+### `endpoint`
+
+Defines the Nomad server endpoint.
+
+#### `address`
+
+Defines the address of the Nomad server.
+
+_Optional, Default="http://127.0.0.1:4646"_
+
+```yaml tab="File (YAML)"
+providers:
+  nomad:
+    endpoint:
+      address: http://127.0.0.1:4646
+    # ...
+```
+
+```toml tab="File (TOML)"
+[providers.nomad]
+  [providers.nomad.endpoint]
+    address = "http://127.0.0.1:4646"
+    # ...
+```
+
+```bash tab="CLI"
+--providers.nomad.endpoint.address=http://127.0.0.1:4646
+# ...
+```
+
+#### `token`
+
+_Optional, Default=""_
+
+Token is used to provide a per-request ACL token, if Nomad ACLs are enabled.
+
+```yaml tab="File (YAML)"
+providers:
+  nomad:
+    endpoint:
+      token: test
+    # ...
+```
+
+```toml tab="File (TOML)"
+[providers.nomad]
+  [providers.nomad.endpoint]
+    token = "test"
+    # ...
+```
+
+```bash tab="CLI"
+--providers.nomad.endpoint.token=test
+# ...
+```
+
+#### `endpointWaitTime`
+
+_Optional, Default=""_
+
+Limits the duration for which a Watch can block.
+If not provided, the agent default values will be used.
+
+```yaml tab="File (YAML)"
+providers:
+  nomad:
+    endpoint:
+      endpointWaitTime: 15s
+    # ...
+```
+
+```toml tab="File (TOML)"
+[providers.nomad]
+  [providers.nomad.endpoint]
+    endpointWaitTime = "15s"
+    # ...
+```
+
+```bash tab="CLI"
+--providers.nomad.endpoint.endpointwaittime=15s
+# ...
+```
+
+#### `tls`
+
+_Optional_
+
+Defines the TLS configuration used for the secure connection to the Nomad API.
+
+##### `ca`
+
+_Optional_
+
+`ca` is the path to the certificate authority used for the secure connection to Nomad,
+it defaults to the system bundle.
+
+```yaml tab="File (YAML)"
+providers:
+  nomad:
+    endpoint:
+      tls:
+        ca: path/to/ca.crt
+```
+
+```toml tab="File (TOML)"
+[providers.nomad.endpoint.tls]
+  ca = "path/to/ca.crt"
+```
+
+```bash tab="CLI"
+--providers.nomad.endpoint.tls.ca=path/to/ca.crt
+```
+
+##### `cert`
+
+_Optional_
+
+`cert` is the path to the public certificate used for the secure connection to the Nomad API.
+When using this option, setting the `key` option is required.
+
+```yaml tab="File (YAML)"
+providers:
+  nomad:
+    endpoint:
+      tls:
+        cert: path/to/foo.cert
+        key: path/to/foo.key
+```
+
+```toml tab="File (TOML)"
+[providers.nomad.endpoint.tls]
+  cert = "path/to/foo.cert"
+  key = "path/to/foo.key"
+```
+
+```bash tab="CLI"
+--providers.nomad.endpoint.tls.cert=path/to/foo.cert
+--providers.nomad.endpoint.tls.key=path/to/foo.key
+```
+
+##### `key`
+
+_Optional_
+
+`key` is the path to the private key used for the secure connection to the Nomad API.
+When using this option, setting the `cert` option is required.
+
+```yaml tab="File (YAML)"
+providers:
+  nomad:
+    endpoint:
+      tls:
+        cert: path/to/foo.cert
+        key: path/to/foo.key
+```
+
+```toml tab="File (TOML)"
+[providers.nomad.endpoint.tls]
+  cert = "path/to/foo.cert"
+  key = "path/to/foo.key"
+```
+
+```bash tab="CLI"
+--providers.nomad.endpoint.tls.cert=path/to/foo.cert
+--providers.nomad.endpoint.tls.key=path/to/foo.key
+```
+
+##### `insecureSkipVerify`
+
+_Optional, Default=false_
+
+If `insecureSkipVerify` is `true`, the TLS connection to Nomad accepts any certificate presented by the server regardless of the hostnames it covers.
+
+```yaml tab="File (YAML)"
+providers:
+  nomad:
+    endpoint:
+      tls:
+        insecureSkipVerify: true
+```
+
+```toml tab="File (TOML)"
+[providers.nomad.endpoint.tls]
+  insecureSkipVerify = true
+```
+
+```bash tab="CLI"
+--providers.nomad.endpoint.tls.insecureskipverify=true
+```
+
+### `exposedByDefault`
+
+_Optional, Default=true_
+
+Expose Nomad services by default in Traefik.
+If set to `false`, services that do not have a `traefik.enable=true` tag will be ignored from the resulting routing configuration.
+
+For additional information, refer to [Restrict the Scope of Service Discovery](./overview.md#restrict-the-scope-of-service-discovery).
+
+```yaml tab="File (YAML)"
+providers:
+  nomad:
+    exposedByDefault: false
+    # ...
+```
+
+```toml tab="File (TOML)"
+[providers.nomad]
+  exposedByDefault = false
+  # ...
+```
+
+```bash tab="CLI"
+--providers.nomad.exposedByDefault=false
+# ...
+```
+
+### `defaultRule`
+
+_Optional, Default=```Host(`{{ normalize .Name }}`)```_
+
+The default host rule for all services.
+
+For a given service, if no routing rule was defined by a tag, it is defined by this `defaultRule` instead.
+The `defaultRule` must be set to a valid [Go template](https://pkg.go.dev/text/template/),
+and can include [sprig template functions](https://masterminds.github.io/sprig/).
+The service name can be accessed with the `Name` identifier,
+and the template has access to all the labels (i.e. tags beginning with the `prefix`) defined on this service.
+
+The option can be overridden on an instance basis with the `traefik.http.routers.{name-of-your-choice}.rule` tag.
+
+```yaml tab="File (YAML)"
+providers:
+  nomad:
+    defaultRule: "Host(`{{ .Name }}.{{ index .Labels \"customLabel\"}}`)"
+    # ...
+```
+
+```toml tab="File (TOML)"
+[providers.nomad]
+  defaultRule = "Host(`{{ .Name }}.{{ index .Labels \"customLabel\"}}`)"
+  # ...
+```
+
+```bash tab="CLI"
+--providers.nomad.defaultRule="Host(`{{ .Name }}.{{ index .Labels \"customLabel\"}}`)"
+# ...
+```
+
+### `constraints`
+
+_Optional, Default=""_
+
+The `constraints` option can be set to an expression that Traefik matches against the service tags to determine whether
+to create any route for that service. If none of the service tags match the expression, no route for that service is
+created. If the expression is empty, all detected services are included.
+
+The expression syntax is based on the ```Tag(`tag`)```, and ```TagRegex(`tag`)``` functions,
+as well as the usual boolean logic, as shown in examples below.
+
+??? example "Constraints Expression Examples"
+
+    ```toml
+    # Includes only services having the tag `a.tag.name=foo`
+    constraints = "Tag(`a.tag.name=foo`)"
+    ```
+
+    ```toml
+    # Excludes services having any tag `a.tag.name=foo`
+    constraints = "!Tag(`a.tag.name=foo`)"
+    ```
+
+    ```toml
+    # With logical AND.
+    constraints = "Tag(`a.tag.name`) && Tag(`another.tag.name`)"
+    ```
+
+    ```toml
+    # With logical OR.
+    constraints = "Tag(`a.tag.name`) || Tag(`another.tag.name`)"
+    ```
+
+    ```toml
+    # With logical AND and OR, with precedence set by parentheses.
+    constraints = "Tag(`a.tag.name`) && (Tag(`another.tag.name`) || Tag(`yet.another.tag.name`))"
+    ```
+
+    ```toml
+    # Includes only services having a tag matching the `a\.tag\.t.+` regular expression.
+    constraints = "TagRegex(`a\.tag\.t.+`)"
+    ```
+
+```yaml tab="File (YAML)"
+providers:
+  nomad:
+    constraints: "Tag(`a.tag.name`)"
+    # ...
+```
+
+```toml tab="File (TOML)"
+[providers.nomad]
+  constraints = "Tag(`a.tag.name`)"
+  # ...
+```
+
+```bash tab="CLI"
+--providers.nomad.constraints="Tag(`a.tag.name`)"
+# ...
+```
+
+For additional information, refer to [Restrict the Scope of Service Discovery](./overview.md#restrict-the-scope-of-service-discovery).
+
+### `namespace`
+
+_Optional, Default=""_
+
+The `namespace` option defines the namespace in which the Nomad services will be discovered.
+
+```yaml tab="File (YAML)"
+providers:
+  nomad:
+    namespace: "production"
+    # ...
+```
+
+```toml tab="File (TOML)"
+[providers.nomad]
+  namespace = "production"
+  # ...
+```
+
+```bash tab="CLI"
+--providers.nomad.namespace=production
+# ...
+```

docs/content/providers/overview.md

@@ -139,6 +139,7 @@ Below is the list of the currently supported providers in Traefik.
 | [Kubernetes Ingress](./kubernetes-ingress.md)     | Orchestrator | Ingress              | `kubernetes`        |
 | [Kubernetes Gateway API](./kubernetes-gateway.md) | Orchestrator | Gateway API Resource | `kubernetesgateway` |
 | [Consul Catalog](./consul-catalog.md)             | Orchestrator | Label                | `consulcatalog`     |
+| [Nomad](./nomad.md)                               | Orchestrator | Label                | `nomad`             |
 | [ECS](./ecs.md)                                   | Orchestrator | Label                | `ecs`               |
 | [Marathon](./marathon.md)                         | Orchestrator | Label                | `marathon`          |
 | [Rancher](./rancher.md)                           | Orchestrator | Label                | `rancher`           |
@@ -213,6 +214,7 @@ List of providers that support these features:
 
 - [Docker](./docker.md#exposedbydefault)
 - [Consul Catalog](./consul-catalog.md#exposedbydefault)
+- [Nomad](./nomad.md#exposedbydefault)
 - [Rancher](./rancher.md#exposedbydefault)
 - [Marathon](./marathon.md#exposedbydefault)
 
@@ -222,6 +224,7 @@ List of providers that support constraints:
 
 - [Docker](./docker.md#constraints)
 - [Consul Catalog](./consul-catalog.md#constraints)
+- [Nomad](./nomad.md#constraints)
 - [Rancher](./rancher.md#constraints)
 - [Marathon](./marathon.md#constraints)
 - [Kubernetes CRD](./kubernetes-crd.md#labelselector)

docs/content/providers/redis.md

@@ -134,36 +134,6 @@ providers:
 --providers.redis.tls.ca=path/to/ca.crt
 ```
 
-#### `caOptional`
-
-_Optional_
-
-The value of `caOptional` defines which policy should be used for the secure connection with TLS Client Authentication to Redis.
-
-!!! warning ""
-
-    If `ca` is undefined, this option will be ignored, and no client certificate will be requested during the handshake. Any provided certificate will thus never be verified.
-
-When this option is set to `true`, a client certificate is requested during the handshake but is not required. If a certificate is sent, it is required to be valid.
-
-When this option is set to `false`, a client certificate is requested during the handshake, and at least one valid certificate should be sent by the client.
-
-```yaml tab="File (YAML)"
-providers:
-  redis:
-    tls:
-      caOptional: true
-```
-
-```toml tab="File (TOML)"
-[providers.redis.tls]
-  caOptional = true
-```
-
-```bash tab="CLI"
---providers.redis.tls.caOptional=true
-```
-
 #### `cert`
 
 _Optional_

docs/content/providers/zookeeper.md

@@ -134,36 +134,6 @@ providers:
 --providers.zookeeper.tls.ca=path/to/ca.crt
 ```
 
-#### `caOptional`
-
-_Optional_
-
-The value of `caOptional` defines which policy should be used for the secure connection with TLS Client Authentication to Zookeeper.
-
-!!! warning ""
-
-    If `ca` is undefined, this option will be ignored, and no client certificate will be requested during the handshake. Any provided certificate will thus never be verified.
-
-When this option is set to `true`, a client certificate is requested during the handshake but is not required. If a certificate is sent, it is required to be valid.
-
-When this option is set to `false`, a client certificate is requested during the handshake, and at least one valid certificate should be sent by the client.
-
-```yaml tab="File (YAML)"
-providers:
-  zooKeeper:
-    tls:
-      caOptional: true
-```
-
-```toml tab="File (TOML)"
-[providers.zooKeeper.tls]
-  caOptional = true
-```
-
-```bash tab="CLI"
---providers.zookeeper.tls.caOptional=true
-```
-
 #### `cert`
 
 _Optional_

docs/content/reference/dynamic-configuration/docker-labels.yml

@@ -11,6 +11,9 @@
 - "traefik.http.middlewares.middleware02.buffering.retryexpression=foobar"
 - "traefik.http.middlewares.middleware03.chain.middlewares=foobar, foobar"
 - "traefik.http.middlewares.middleware04.circuitbreaker.expression=foobar"
+- "traefik.http.middlewares.middleware04.circuitbreaker.checkperiod=42s"
+- "traefik.http.middlewares.middleware04.circuitbreaker.fallbackduration=42s"
+- "traefik.http.middlewares.middleware04.circuitbreaker.recoveryduration=42s"
 - "traefik.http.middlewares.middleware05.compress=true"
 - "traefik.http.middlewares.middleware05.compress.excludedcontenttypes=foobar, foobar"
 - "traefik.http.middlewares.middleware05.compress.minresponsebodybytes=42"

docs/content/reference/dynamic-configuration/file.toml

@@ -125,6 +125,9 @@
     [http.middlewares.Middleware04]
       [http.middlewares.Middleware04.circuitBreaker]
         expression = "foobar"
+        checkPeriod = "42s"
+        fallbackDuration = "42s"
+        recoveryDuration = "42s"
     [http.middlewares.Middleware05]
       [http.middlewares.Middleware05.compress]
         excludedContentTypes = ["foobar", "foobar"]

docs/content/reference/dynamic-configuration/file.yaml

@@ -128,6 +128,9 @@ http:
     Middleware04:
       circuitBreaker:
         expression: foobar
+        checkPeriod: 42s
+        fallbackDuration: 42s
+        recoveryDuration: 42s
     Middleware05:
       compress:
         excludedContentTypes:

docs/content/reference/dynamic-configuration/kubernetes-crd-definition-v1.yml

@@ -39,7 +39,7 @@ spec:
               entryPoints:
                 description: 'EntryPoints defines the list of entry point names to
                   bind to. Entry points have to be configured in the static configuration.
-                  More info: https://doc.traefik.io/traefik/v2.7/routing/entrypoints/
+                  More info: https://doc.traefik.io/traefik/v2.8/routing/entrypoints/
                   Default: all.'
                 items:
                   type: string
@@ -56,11 +56,11 @@ spec:
                       - Rule
                       type: string
                     match:
-                      description: 'Match defines the router''s rule. More info: https://doc.traefik.io/traefik/v2.7/routing/routers/#rule'
+                      description: 'Match defines the router''s rule. More info: https://doc.traefik.io/traefik/v2.8/routing/routers/#rule'
                       type: string
                     middlewares:
                       description: 'Middlewares defines the list of references to
-                        Middleware resources. More info: https://doc.traefik.io/traefik/v2.7/routing/providers/kubernetes-crd/#kind-middleware'
+                        Middleware resources. More info: https://doc.traefik.io/traefik/v2.8/routing/providers/kubernetes-crd/#kind-middleware'
                       items:
                         description: MiddlewareRef is a reference to a Middleware
                           resource.
@@ -79,7 +79,7 @@ spec:
                       type: array
                     priority:
                       description: 'Priority defines the router''s priority. More
-                        info: https://doc.traefik.io/traefik/v2.7/routing/routers/#priority'
+                        info: https://doc.traefik.io/traefik/v2.8/routing/routers/#priority'
                       type: integer
                     services:
                       description: Services defines the list of Service. It can contain
@@ -145,7 +145,7 @@ spec:
                             type: string
                           sticky:
                             description: 'Sticky defines the sticky sessions configuration.
-                              More info: https://doc.traefik.io/traefik/v2.7/routing/services/#sticky-sessions'
+                              More info: https://doc.traefik.io/traefik/v2.8/routing/services/#sticky-sessions'
                             properties:
                               cookie:
                                 description: Cookie defines the sticky cookie configuration.
@@ -190,16 +190,16 @@ spec:
                   type: object
                 type: array
               tls:
-                description: 'TLS defines the TLS configuration. More info: https://doc.traefik.io/traefik/v2.7/routing/routers/#tls'
+                description: 'TLS defines the TLS configuration. More info: https://doc.traefik.io/traefik/v2.8/routing/routers/#tls'
                 properties:
                   certResolver:
                     description: 'CertResolver defines the name of the certificate
                       resolver to use. Cert resolvers have to be configured in the
-                      static configuration. More info: https://doc.traefik.io/traefik/v2.7/https/acme/#certificate-resolvers'
+                      static configuration. More info: https://doc.traefik.io/traefik/v2.8/https/acme/#certificate-resolvers'
                     type: string
                   domains:
                     description: 'Domains defines the list of domains that will be
-                      used to issue certificates. More info: https://doc.traefik.io/traefik/v2.7/routing/routers/#domains'
+                      used to issue certificates. More info: https://doc.traefik.io/traefik/v2.8/routing/routers/#domains'
                     items:
                       description: Domain holds a domain name with SANs.
                       properties:
@@ -217,15 +217,15 @@ spec:
                   options:
                     description: 'Options defines the reference to a TLSOption, that
                       specifies the parameters of the TLS connection. If not defined,
-                      the `default` TLSOption is used. More info: https://doc.traefik.io/traefik/v2.7/https/tls/#tls-options'
+                      the `default` TLSOption is used. More info: https://doc.traefik.io/traefik/v2.8/https/tls/#tls-options'
                     properties:
                       name:
                         description: 'Name defines the name of the referenced TLSOption.
-                          More info: https://doc.traefik.io/traefik/v2.7/routing/providers/kubernetes-crd/#kind-tlsoption'
+                          More info: https://doc.traefik.io/traefik/v2.8/routing/providers/kubernetes-crd/#kind-tlsoption'
                         type: string
                       namespace:
                         description: 'Namespace defines the namespace of the referenced
-                          TLSOption. More info: https://doc.traefik.io/traefik/v2.7/routing/providers/kubernetes-crd/#kind-tlsoption'
+                          TLSOption. More info: https://doc.traefik.io/traefik/v2.8/routing/providers/kubernetes-crd/#kind-tlsoption'
                         type: string
                     required:
                     - name
@@ -241,11 +241,11 @@ spec:
                     properties:
                       name:
                         description: 'Name defines the name of the referenced TLSStore.
-                          More info: https://doc.traefik.io/traefik/v2.7/routing/providers/kubernetes-crd/#kind-tlsstore'
+                          More info: https://doc.traefik.io/traefik/v2.8/routing/providers/kubernetes-crd/#kind-tlsstore'
                         type: string
                       namespace:
                         description: 'Namespace defines the namespace of the referenced
-                          TLSStore. More info: https://doc.traefik.io/traefik/v2.7/routing/providers/kubernetes-crd/#kind-tlsstore'
+                          TLSStore. More info: https://doc.traefik.io/traefik/v2.8/routing/providers/kubernetes-crd/#kind-tlsstore'
                         type: string
                     required:
                     - name
@@ -307,7 +307,7 @@ spec:
               entryPoints:
                 description: 'EntryPoints defines the list of entry point names to
                   bind to. Entry points have to be configured in the static configuration.
-                  More info: https://doc.traefik.io/traefik/v2.7/routing/entrypoints/
+                  More info: https://doc.traefik.io/traefik/v2.8/routing/entrypoints/
                   Default: all.'
                 items:
                   type: string
@@ -318,7 +318,7 @@ spec:
                   description: RouteTCP holds the TCP route configuration.
                   properties:
                     match:
-                      description: 'Match defines the router''s rule. More info: https://doc.traefik.io/traefik/v2.7/routing/routers/#rule_1'
+                      description: 'Match defines the router''s rule. More info: https://doc.traefik.io/traefik/v2.8/routing/routers/#rule_1'
                       type: string
                     middlewares:
                       description: Middlewares defines the list of references to MiddlewareTCP
@@ -341,7 +341,7 @@ spec:
                       type: array
                     priority:
                       description: 'Priority defines the router''s priority. More
-                        info: https://doc.traefik.io/traefik/v2.7/routing/routers/#priority_1'
+                        info: https://doc.traefik.io/traefik/v2.8/routing/routers/#priority_1'
                       type: integer
                     services:
                       description: Services defines the list of TCP services.
@@ -366,7 +366,7 @@ spec:
                             x-kubernetes-int-or-string: true
                           proxyProtocol:
                             description: 'ProxyProtocol defines the PROXY protocol
-                              configuration. More info: https://doc.traefik.io/traefik/v2.7/routing/services/#proxy-protocol'
+                              configuration. More info: https://doc.traefik.io/traefik/v2.8/routing/services/#proxy-protocol'
                             properties:
                               version:
                                 description: Version defines the PROXY Protocol version
@@ -397,16 +397,16 @@ spec:
                 type: array
               tls:
                 description: 'TLS defines the TLS configuration on a layer 4 / TCP
-                  Route. More info: https://doc.traefik.io/traefik/v2.7/routing/routers/#tls_1'
+                  Route. More info: https://doc.traefik.io/traefik/v2.8/routing/routers/#tls_1'
                 properties:
                   certResolver:
                     description: 'CertResolver defines the name of the certificate
                       resolver to use. Cert resolvers have to be configured in the
-                      static configuration. More info: https://doc.traefik.io/traefik/v2.7/https/acme/#certificate-resolvers'
+                      static configuration. More info: https://doc.traefik.io/traefik/v2.8/https/acme/#certificate-resolvers'
                     type: string
                   domains:
                     description: 'Domains defines the list of domains that will be
-                      used to issue certificates. More info: https://doc.traefik.io/traefik/v2.7/routing/routers/#domains'
+                      used to issue certificates. More info: https://doc.traefik.io/traefik/v2.8/routing/routers/#domains'
                     items:
                       description: Domain holds a domain name with SANs.
                       properties:
@@ -424,7 +424,7 @@ spec:
                   options:
                     description: 'Options defines the reference to a TLSOption, that
                       specifies the parameters of the TLS connection. If not defined,
-                      the `default` TLSOption is used. More info: https://doc.traefik.io/traefik/v2.7/https/tls/#tls-options'
+                      the `default` TLSOption is used. More info: https://doc.traefik.io/traefik/v2.8/https/tls/#tls-options'
                     properties:
                       name:
                         description: Name defines the name of the referenced Traefik
@@ -518,7 +518,7 @@ spec:
               entryPoints:
                 description: 'EntryPoints defines the list of entry point names to
                   bind to. Entry points have to be configured in the static configuration.
-                  More info: https://doc.traefik.io/traefik/v2.7/routing/entrypoints/
+                  More info: https://doc.traefik.io/traefik/v2.8/routing/entrypoints/
                   Default: all.'
                 items:
                   type: string
@@ -597,7 +597,7 @@ spec:
     schema:
       openAPIV3Schema:
         description: 'Middleware is the CRD implementation of a Traefik Middleware.
-          More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/overview/'
+          More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/overview/'
         properties:
           apiVersion:
             description: 'APIVersion defines the versioned schema of this representation
@@ -617,7 +617,7 @@ spec:
               addPrefix:
                 description: 'AddPrefix holds the add prefix middleware configuration.
                   This middleware updates the path of a request before forwarding
-                  it. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/addprefix/'
+                  it. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/addprefix/'
                 properties:
                   prefix:
                     description: Prefix is the string to add before the current path
@@ -627,11 +627,11 @@ spec:
               basicAuth:
                 description: 'BasicAuth holds the basic auth middleware configuration.
                   This middleware restricts access to your services to known users.
-                  More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/basicauth/'
+                  More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/basicauth/'
                 properties:
                   headerField:
                     description: 'HeaderField defines a header field to store the
-                      authenticated user. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/basicauth/#headerfield'
+                      authenticated user. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/basicauth/#headerfield'
                     type: string
                   realm:
                     description: 'Realm allows the protected resources on a server
@@ -651,7 +651,7 @@ spec:
               buffering:
                 description: 'Buffering holds the buffering middleware configuration.
                   This middleware retries or limits the size of requests that can
-                  be forwarded to backends. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/buffering/#maxrequestbodybytes'
+                  be forwarded to backends. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/buffering/#maxrequestbodybytes'
                 properties:
                   maxRequestBodyBytes:
                     description: 'MaxRequestBodyBytes defines the maximum allowed
@@ -684,13 +684,13 @@ spec:
                   retryExpression:
                     description: 'RetryExpression defines the retry conditions. It
                       is a logical combination of functions with operators AND (&&)
-                      and OR (||). More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/buffering/#retryexpression'
+                      and OR (||). More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/buffering/#retryexpression'
                     type: string
                 type: object
               chain:
                 description: 'Chain holds the configuration of the chain middleware.
                   This middleware enables to define reusable combinations of other
-                  pieces of middleware. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/chain/'
+                  pieces of middleware. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/chain/'
                 properties:
                   middlewares:
                     description: Middlewares is the list of MiddlewareRef which composes
@@ -712,21 +712,39 @@ spec:
                     type: array
                 type: object
               circuitBreaker:
-                description: 'CircuitBreaker holds the circuit breaker middleware
-                  configuration. This middleware protects the system from stacking
-                  requests to unhealthy services, resulting in cascading failures.
-                  More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/circuitbreaker/'
+                description: CircuitBreaker holds the circuit breaker configuration.
                 properties:
+                  checkPeriod:
+                    anyOf:
+                    - type: integer
+                    - type: string
+                    description: CheckPeriod is the interval between successive checks
+                      of the circuit breaker condition (when in standby state).
+                    x-kubernetes-int-or-string: true
                   expression:
-                    description: Expression defines the expression that, once matched,
-                      opens the circuit breaker and applies the fallback mechanism
-                      instead of calling the services.
+                    description: Expression is the condition that triggers the tripped
+                      state.
                     type: string
+                  fallbackDuration:
+                    anyOf:
+                    - type: integer
+                    - type: string
+                    description: FallbackDuration is the duration for which the circuit
+                      breaker will wait before trying to recover (from a tripped state).
+                    x-kubernetes-int-or-string: true
+                  recoveryDuration:
+                    anyOf:
+                    - type: integer
+                    - type: string
+                    description: RecoveryDuration is the duration for which the circuit
+                      breaker will try to recover (as soon as it is in recovering
+                      state).
+                    x-kubernetes-int-or-string: true
                 type: object
               compress:
                 description: 'Compress holds the compress middleware configuration.
                   This middleware compresses responses before sending them to the
-                  client, using gzip compression. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/compress/'
+                  client, using gzip compression. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/compress/'
                 properties:
                   excludedContentTypes:
                     description: ExcludedContentTypes defines the list of content
@@ -760,11 +778,11 @@ spec:
               digestAuth:
                 description: 'DigestAuth holds the digest auth middleware configuration.
                   This middleware restricts access to your services to known users.
-                  More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/digestauth/'
+                  More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/digestauth/'
                 properties:
                   headerField:
                     description: 'HeaderField defines a header field to store the
-                      authenticated user. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/basicauth/#headerfield'
+                      authenticated user. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/basicauth/#headerfield'
                     type: string
                   realm:
                     description: 'Realm allows the protected resources on a server
@@ -783,7 +801,7 @@ spec:
               errors:
                 description: 'ErrorPage holds the custom error middleware configuration.
                   This middleware returns a custom page in lieu of the default, according
-                  to configured ranges of HTTP Status codes. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/errorpages/'
+                  to configured ranges of HTTP Status codes. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/errorpages/'
                 properties:
                   query:
                     description: Query defines the URL for the error page (hosted
@@ -792,7 +810,7 @@ spec:
                     type: string
                   service:
                     description: 'Service defines the reference to a Kubernetes Service
-                      that will serve the error page. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/errorpages/#service'
+                      that will serve the error page. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/errorpages/#service'
                     properties:
                       kind:
                         description: Kind defines the kind of the Service.
@@ -849,7 +867,7 @@ spec:
                         type: string
                       sticky:
                         description: 'Sticky defines the sticky sessions configuration.
-                          More info: https://doc.traefik.io/traefik/v2.7/routing/services/#sticky-sessions'
+                          More info: https://doc.traefik.io/traefik/v2.8/routing/services/#sticky-sessions'
                         properties:
                           cookie:
                             description: Cookie defines the sticky cookie configuration.
@@ -898,7 +916,7 @@ spec:
               forwardAuth:
                 description: 'ForwardAuth holds the forward auth middleware configuration.
                   This middleware delegates the request authentication to a Service.
-                  More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/forwardauth/'
+                  More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/forwardauth/'
                 properties:
                   address:
                     description: Address defines the authentication server address.
@@ -921,7 +939,7 @@ spec:
                     description: 'AuthResponseHeadersRegex defines the regex to match
                       headers to copy from the authentication server response and
                       set on forwarded request, after stripping all headers that match
-                      the regex. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/forwardauth/#authresponseheadersregex'
+                      the regex. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/forwardauth/#authresponseheadersregex'
                     type: string
                   tls:
                     description: TLS defines the configuration used to secure the
@@ -952,7 +970,7 @@ spec:
               headers:
                 description: 'Headers holds the headers middleware configuration.
                   This middleware manages the requests and responses headers. More
-                  info: https://doc.traefik.io/traefik/v2.7/middlewares/http/headers/#customrequestheaders'
+                  info: https://doc.traefik.io/traefik/v2.8/middlewares/http/headers/#customrequestheaders'
                 properties:
                   accessControlAllowCredentials:
                     description: AccessControlAllowCredentials defines whether the
@@ -1113,7 +1131,7 @@ spec:
               inFlightReq:
                 description: 'InFlightReq holds the in-flight request middleware configuration.
                   This middleware limits the number of requests being processed and
-                  served concurrently. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/inflightreq/'
+                  served concurrently. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/inflightreq/'
                 properties:
                   amount:
                     description: Amount defines the maximum amount of allowed simultaneous
@@ -1127,11 +1145,11 @@ spec:
                       group requests as originating from a common source. If several
                       strategies are defined at the same time, an error will be raised.
                       If none are set, the default is to use the requestHost. More
-                      info: https://doc.traefik.io/traefik/v2.7/middlewares/http/inflightreq/#sourcecriterion'
+                      info: https://doc.traefik.io/traefik/v2.8/middlewares/http/inflightreq/#sourcecriterion'
                     properties:
                       ipStrategy:
                         description: 'IPStrategy holds the IP strategy configuration
-                          used by Traefik to determine the client IP. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/ipwhitelist/#ipstrategy'
+                          used by Traefik to determine the client IP. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/ipwhitelist/#ipstrategy'
                         properties:
                           depth:
                             description: Depth tells Traefik to use the X-Forwarded-For
@@ -1159,11 +1177,11 @@ spec:
               ipWhiteList:
                 description: 'IPWhiteList holds the IP whitelist middleware configuration.
                   This middleware accepts / refuses requests based on the client IP.
-                  More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/ipwhitelist/'
+                  More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/ipwhitelist/'
                 properties:
                   ipStrategy:
                     description: 'IPStrategy holds the IP strategy configuration used
-                      by Traefik to determine the client IP. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/ipwhitelist/#ipstrategy'
+                      by Traefik to determine the client IP. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/ipwhitelist/#ipstrategy'
                     properties:
                       depth:
                         description: Depth tells Traefik to use the X-Forwarded-For
@@ -1187,7 +1205,7 @@ spec:
               passTLSClientCert:
                 description: 'PassTLSClientCert holds the pass TLS client cert middleware
                   configuration. This middleware adds the selected data from the passed
-                  client TLS certificate to a header. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/passtlsclientcert/'
+                  client TLS certificate to a header. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/passtlsclientcert/'
                 properties:
                   info:
                     description: Info selects the specific client certificate details
@@ -1294,7 +1312,7 @@ spec:
               rateLimit:
                 description: 'RateLimit holds the rate limit configuration. This middleware
                   ensures that services will receive a fair amount of requests, and
-                  allows one to define what fair is. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/ratelimit/'
+                  allows one to define what fair is. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/ratelimit/'
                 properties:
                   average:
                     description: Average is the maximum rate, by default in requests/s,
@@ -1327,7 +1345,7 @@ spec:
                     properties:
                       ipStrategy:
                         description: 'IPStrategy holds the IP strategy configuration
-                          used by Traefik to determine the client IP. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/ipwhitelist/#ipstrategy'
+                          used by Traefik to determine the client IP. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/ipwhitelist/#ipstrategy'
                         properties:
                           depth:
                             description: Depth tells Traefik to use the X-Forwarded-For
@@ -1355,7 +1373,7 @@ spec:
               redirectRegex:
                 description: 'RedirectRegex holds the redirect regex middleware configuration.
                   This middleware redirects a request using regex matching and replacement.
-                  More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/redirectregex/#regex'
+                  More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/redirectregex/#regex'
                 properties:
                   permanent:
                     description: Permanent defines whether the redirection is permanent
@@ -1373,7 +1391,7 @@ spec:
               redirectScheme:
                 description: 'RedirectScheme holds the redirect scheme middleware
                   configuration. This middleware redirects requests from a scheme/port
-                  to another. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/redirectscheme/'
+                  to another. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/redirectscheme/'
                 properties:
                   permanent:
                     description: Permanent defines whether the redirection is permanent
@@ -1389,7 +1407,7 @@ spec:
               replacePath:
                 description: 'ReplacePath holds the replace path middleware configuration.
                   This middleware replaces the path of the request URL and store the
-                  original path in an X-Replaced-Path header. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/replacepath/'
+                  original path in an X-Replaced-Path header. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/replacepath/'
                 properties:
                   path:
                     description: Path defines the path to use as replacement in the
@@ -1399,7 +1417,7 @@ spec:
               replacePathRegex:
                 description: 'ReplacePathRegex holds the replace path regex middleware
                   configuration. This middleware replaces the path of a URL using
-                  regex matching and replacement. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/replacepathregex/'
+                  regex matching and replacement. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/replacepathregex/'
                 properties:
                   regex:
                     description: Regex defines the regular expression used to match
@@ -1415,7 +1433,7 @@ spec:
                   middleware reissues requests a given number of times to a backend
                   server if that server does not reply. As soon as the server answers,
                   the middleware stops retrying, regardless of the response status.
-                  More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/retry/'
+                  More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/retry/'
                 properties:
                   attempts:
                     description: Attempts defines how many times the request should
@@ -1435,7 +1453,7 @@ spec:
               stripPrefix:
                 description: 'StripPrefix holds the strip prefix middleware configuration.
                   This middleware removes the specified prefixes from the URL path.
-                  More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/stripprefix/'
+                  More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/stripprefix/'
                 properties:
                   forceSlash:
                     description: 'ForceSlash ensures that the resulting stripped path
@@ -1452,7 +1470,7 @@ spec:
               stripPrefixRegex:
                 description: 'StripPrefixRegex holds the strip prefix regex middleware
                   configuration. This middleware removes the matching prefixes from
-                  the URL path. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/stripprefixregex/'
+                  the URL path. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/stripprefixregex/'
                 properties:
                   regex:
                     description: Regex defines the regular expression to match the
@@ -1496,7 +1514,7 @@ spec:
     schema:
       openAPIV3Schema:
         description: 'MiddlewareTCP is the CRD implementation of a Traefik TCP middleware.
-          More info: https://doc.traefik.io/traefik/v2.7/middlewares/overview/'
+          More info: https://doc.traefik.io/traefik/v2.8/middlewares/overview/'
         properties:
           apiVersion:
             description: 'APIVersion defines the versioned schema of this representation
@@ -1570,7 +1588,7 @@ spec:
         description: 'ServersTransport is the CRD implementation of a ServersTransport.
           If no serversTransport is specified, the default@internal will be used.
           The default@internal serversTransport is created from the static configuration.
-          More info: https://doc.traefik.io/traefik/v2.7/routing/services/#serverstransport_1'
+          More info: https://doc.traefik.io/traefik/v2.8/routing/services/#serverstransport_1'
         properties:
           apiVersion:
             description: 'APIVersion defines the versioned schema of this representation
@@ -1697,7 +1715,7 @@ spec:
       openAPIV3Schema:
         description: 'TLSOption is the CRD implementation of a Traefik TLS Option,
           allowing to configure some parameters of the TLS connection. More info:
-          https://doc.traefik.io/traefik/v2.7/https/tls/#tls-options'
+          https://doc.traefik.io/traefik/v2.8/https/tls/#tls-options'
         properties:
           apiVersion:
             description: 'APIVersion defines the versioned schema of this representation
@@ -1717,13 +1735,13 @@ spec:
               alpnProtocols:
                 description: 'ALPNProtocols defines the list of supported application
                   level protocols for the TLS handshake, in order of preference. More
-                  info: https://doc.traefik.io/traefik/v2.7/https/tls/#alpn-protocols'
+                  info: https://doc.traefik.io/traefik/v2.8/https/tls/#alpn-protocols'
                 items:
                   type: string
                 type: array
               cipherSuites:
                 description: 'CipherSuites defines the list of supported cipher suites
-                  for TLS versions up to TLS 1.2. More info: https://doc.traefik.io/traefik/v2.7/https/tls/#cipher-suites'
+                  for TLS versions up to TLS 1.2. More info: https://doc.traefik.io/traefik/v2.8/https/tls/#cipher-suites'
                 items:
                   type: string
                 type: array
@@ -1750,7 +1768,7 @@ spec:
                 type: object
               curvePreferences:
                 description: 'CurvePreferences defines the preferred elliptic curves
-                  in a specific order. More info: https://doc.traefik.io/traefik/v2.7/https/tls/#curve-preferences'
+                  in a specific order. More info: https://doc.traefik.io/traefik/v2.8/https/tls/#curve-preferences'
                 items:
                   type: string
                 type: array
@@ -1810,7 +1828,7 @@ spec:
         description: 'TLSStore is the CRD implementation of a Traefik TLS Store. For
           the time being, only the TLSStore named default is supported. This means
           that you cannot have two stores that are named default in different Kubernetes
-          namespaces. More info: https://doc.traefik.io/traefik/v2.7/https/tls/#certificates-stores'
+          namespaces. More info: https://doc.traefik.io/traefik/v2.8/https/tls/#certificates-stores'
         properties:
           apiVersion:
             description: 'APIVersion defines the versioned schema of this representation
@@ -1827,6 +1845,20 @@ spec:
           spec:
             description: TLSStoreSpec defines the desired state of a TLSStore.
             properties:
+              certificates:
+                description: Certificates is a list of secret names, each secret holding
+                  a key/certificate pair to add to the store.
+                items:
+                  description: Certificate holds a secret name for the TLSStore resource.
+                  properties:
+                    secretName:
+                      description: SecretName is the name of the referenced Kubernetes
+                        Secret to specify the certificate details.
+                      type: string
+                  required:
+                  - secretName
+                  type: object
+                type: array
               defaultCertificate:
                 description: DefaultCertificate defines the default certificate configuration.
                 properties:
@@ -1837,8 +1869,6 @@ spec:
                 required:
                 - secretName
                 type: object
-            required:
-            - defaultCertificate
             type: object
         required:
         - metadata
@@ -1875,7 +1905,7 @@ spec:
       openAPIV3Schema:
         description: 'TraefikService is the CRD implementation of a Traefik Service.
           TraefikService object allows to:  - Apply weight to Services on load-balancing  -
-          Mirror traffic on services More info: https://doc.traefik.io/traefik/v2.7/routing/providers/kubernetes-crd/#kind-traefikservice'
+          Mirror traffic on services More info: https://doc.traefik.io/traefik/v2.8/routing/providers/kubernetes-crd/#kind-traefikservice'
         properties:
           apiVersion:
             description: 'APIVersion defines the versioned schema of this representation
@@ -1974,7 +2004,7 @@ spec:
                           type: string
                         sticky:
                           description: 'Sticky defines the sticky sessions configuration.
-                            More info: https://doc.traefik.io/traefik/v2.7/routing/services/#sticky-sessions'
+                            More info: https://doc.traefik.io/traefik/v2.8/routing/services/#sticky-sessions'
                           properties:
                             cookie:
                               description: Cookie defines the sticky cookie configuration.
@@ -2058,7 +2088,7 @@ spec:
                     type: string
                   sticky:
                     description: 'Sticky defines the sticky sessions configuration.
-                      More info: https://doc.traefik.io/traefik/v2.7/routing/services/#sticky-sessions'
+                      More info: https://doc.traefik.io/traefik/v2.8/routing/services/#sticky-sessions'
                     properties:
                       cookie:
                         description: Cookie defines the sticky cookie configuration.
@@ -2158,7 +2188,7 @@ spec:
                           type: string
                         sticky:
                           description: 'Sticky defines the sticky sessions configuration.
-                            More info: https://doc.traefik.io/traefik/v2.7/routing/services/#sticky-sessions'
+                            More info: https://doc.traefik.io/traefik/v2.8/routing/services/#sticky-sessions'
                           properties:
                             cookie:
                               description: Cookie defines the sticky cookie configuration.
@@ -2197,7 +2227,7 @@ spec:
                     type: array
                   sticky:
                     description: 'Sticky defines whether sticky sessions are enabled.
-                      More info: https://doc.traefik.io/traefik/v2.7/routing/providers/kubernetes-crd/#stickiness-and-load-balancing'
+                      More info: https://doc.traefik.io/traefik/v2.8/routing/providers/kubernetes-crd/#stickiness-and-load-balancing'
                     properties:
                       cookie:
                         description: Cookie defines the sticky cookie configuration.

docs/content/reference/dynamic-configuration/kubernetes-gateway-traefik-lb-svc.yml

@@ -25,7 +25,7 @@ spec:
       serviceAccountName: traefik-controller
       containers:
         - name: traefik
-          image: traefik:v2.7
+          image: traefik:v2.8
           args:
             - --entrypoints.web.address=:80
             - --entrypoints.websecure.address=:443

docs/content/reference/dynamic-configuration/kv-ref.md

@@ -12,7 +12,10 @@
 | `traefik/http/middlewares/Middleware02/buffering/retryExpression` | `foobar` |
 | `traefik/http/middlewares/Middleware03/chain/middlewares/0` | `foobar` |
 | `traefik/http/middlewares/Middleware03/chain/middlewares/1` | `foobar` |
+| `traefik/http/middlewares/Middleware04/circuitBreaker/checkPeriod` | `42s` |
 | `traefik/http/middlewares/Middleware04/circuitBreaker/expression` | `foobar` |
+| `traefik/http/middlewares/Middleware04/circuitBreaker/fallbackDuration` | `42s` |
+| `traefik/http/middlewares/Middleware04/circuitBreaker/recoveryDuration` | `42s` |
 | `traefik/http/middlewares/Middleware05/compress/excludedContentTypes/0` | `foobar` |
 | `traefik/http/middlewares/Middleware05/compress/excludedContentTypes/1` | `foobar` |
 | `traefik/http/middlewares/Middleware05/compress/minResponseBodyBytes` | `42` |

docs/content/reference/dynamic-configuration/marathon-labels.json

@@ -11,6 +11,9 @@
 "traefik.http.middlewares.middleware02.buffering.retryexpression": "foobar",
 "traefik.http.middlewares.middleware03.chain.middlewares": "foobar, foobar",
 "traefik.http.middlewares.middleware04.circuitbreaker.expression": "foobar",
+"traefik.http.middlewares.middleware04.circuitbreaker.checkperiod": "42s",
+"traefik.http.middlewares.middleware04.circuitbreaker.fallbackduration": "42s",
+"traefik.http.middlewares.middleware04.circuitbreaker.recoveryduration": "42s",
 "traefik.http.middlewares.middleware05.compress": "true",
 "traefik.http.middlewares.middleware05.compress.excludedcontenttypes": "foobar, foobar",
 "traefik.http.middlewares.middleware05.compress.minresponsebodybytes": "42",

docs/content/reference/dynamic-configuration/nomad.md

@@ -0,0 +1,16 @@
+---
+title: "Traefik Nomad Service Discovery Configuration Documentation"
+description: "View the reference for performing dynamic configurations with Traefik Proxy and Nomad Service Discovery. Read the technical documentation."
+---
+
+# Nomad Service Discovery Configuration Reference
+
+Dynamic configuration with Nomad Service Discovery
+{: .subtitle }
+
+The labels are case insensitive.
+
+```yaml
+--8<-- "content/reference/dynamic-configuration/nomad.yml"
+--8<-- "content/reference/dynamic-configuration/docker-labels.yml"
+```

docs/content/reference/dynamic-configuration/nomad.yml

@@ -0,0 +1 @@
+- "traefik.enable=true"

docs/content/reference/dynamic-configuration/traefik.containo.us_ingressroutes.yaml

@@ -39,7 +39,7 @@ spec:
               entryPoints:
                 description: 'EntryPoints defines the list of entry point names to
                   bind to. Entry points have to be configured in the static configuration.
-                  More info: https://doc.traefik.io/traefik/v2.7/routing/entrypoints/
+                  More info: https://doc.traefik.io/traefik/v2.8/routing/entrypoints/
                   Default: all.'
                 items:
                   type: string
@@ -56,11 +56,11 @@ spec:
                       - Rule
                       type: string
                     match:
-                      description: 'Match defines the router''s rule. More info: https://doc.traefik.io/traefik/v2.7/routing/routers/#rule'
+                      description: 'Match defines the router''s rule. More info: https://doc.traefik.io/traefik/v2.8/routing/routers/#rule'
                       type: string
                     middlewares:
                       description: 'Middlewares defines the list of references to
-                        Middleware resources. More info: https://doc.traefik.io/traefik/v2.7/routing/providers/kubernetes-crd/#kind-middleware'
+                        Middleware resources. More info: https://doc.traefik.io/traefik/v2.8/routing/providers/kubernetes-crd/#kind-middleware'
                       items:
                         description: MiddlewareRef is a reference to a Middleware
                           resource.
@@ -79,7 +79,7 @@ spec:
                       type: array
                     priority:
                       description: 'Priority defines the router''s priority. More
-                        info: https://doc.traefik.io/traefik/v2.7/routing/routers/#priority'
+                        info: https://doc.traefik.io/traefik/v2.8/routing/routers/#priority'
                       type: integer
                     services:
                       description: Services defines the list of Service. It can contain
@@ -145,7 +145,7 @@ spec:
                             type: string
                           sticky:
                             description: 'Sticky defines the sticky sessions configuration.
-                              More info: https://doc.traefik.io/traefik/v2.7/routing/services/#sticky-sessions'
+                              More info: https://doc.traefik.io/traefik/v2.8/routing/services/#sticky-sessions'
                             properties:
                               cookie:
                                 description: Cookie defines the sticky cookie configuration.
@@ -190,16 +190,16 @@ spec:
                   type: object
                 type: array
               tls:
-                description: 'TLS defines the TLS configuration. More info: https://doc.traefik.io/traefik/v2.7/routing/routers/#tls'
+                description: 'TLS defines the TLS configuration. More info: https://doc.traefik.io/traefik/v2.8/routing/routers/#tls'
                 properties:
                   certResolver:
                     description: 'CertResolver defines the name of the certificate
                       resolver to use. Cert resolvers have to be configured in the
-                      static configuration. More info: https://doc.traefik.io/traefik/v2.7/https/acme/#certificate-resolvers'
+                      static configuration. More info: https://doc.traefik.io/traefik/v2.8/https/acme/#certificate-resolvers'
                     type: string
                   domains:
                     description: 'Domains defines the list of domains that will be
-                      used to issue certificates. More info: https://doc.traefik.io/traefik/v2.7/routing/routers/#domains'
+                      used to issue certificates. More info: https://doc.traefik.io/traefik/v2.8/routing/routers/#domains'
                     items:
                       description: Domain holds a domain name with SANs.
                       properties:
@@ -217,15 +217,15 @@ spec:
                   options:
                     description: 'Options defines the reference to a TLSOption, that
                       specifies the parameters of the TLS connection. If not defined,
-                      the `default` TLSOption is used. More info: https://doc.traefik.io/traefik/v2.7/https/tls/#tls-options'
+                      the `default` TLSOption is used. More info: https://doc.traefik.io/traefik/v2.8/https/tls/#tls-options'
                     properties:
                       name:
                         description: 'Name defines the name of the referenced TLSOption.
-                          More info: https://doc.traefik.io/traefik/v2.7/routing/providers/kubernetes-crd/#kind-tlsoption'
+                          More info: https://doc.traefik.io/traefik/v2.8/routing/providers/kubernetes-crd/#kind-tlsoption'
                         type: string
                       namespace:
                         description: 'Namespace defines the namespace of the referenced
-                          TLSOption. More info: https://doc.traefik.io/traefik/v2.7/routing/providers/kubernetes-crd/#kind-tlsoption'
+                          TLSOption. More info: https://doc.traefik.io/traefik/v2.8/routing/providers/kubernetes-crd/#kind-tlsoption'
                         type: string
                     required:
                     - name
@@ -241,11 +241,11 @@ spec:
                     properties:
                       name:
                         description: 'Name defines the name of the referenced TLSStore.
-                          More info: https://doc.traefik.io/traefik/v2.7/routing/providers/kubernetes-crd/#kind-tlsstore'
+                          More info: https://doc.traefik.io/traefik/v2.8/routing/providers/kubernetes-crd/#kind-tlsstore'
                         type: string
                       namespace:
                         description: 'Namespace defines the namespace of the referenced
-                          TLSStore. More info: https://doc.traefik.io/traefik/v2.7/routing/providers/kubernetes-crd/#kind-tlsstore'
+                          TLSStore. More info: https://doc.traefik.io/traefik/v2.8/routing/providers/kubernetes-crd/#kind-tlsstore'
                         type: string
                     required:
                     - name

docs/content/reference/dynamic-configuration/traefik.containo.us_ingressroutetcps.yaml

@@ -39,7 +39,7 @@ spec:
               entryPoints:
                 description: 'EntryPoints defines the list of entry point names to
                   bind to. Entry points have to be configured in the static configuration.
-                  More info: https://doc.traefik.io/traefik/v2.7/routing/entrypoints/
+                  More info: https://doc.traefik.io/traefik/v2.8/routing/entrypoints/
                   Default: all.'
                 items:
                   type: string
@@ -50,7 +50,7 @@ spec:
                   description: RouteTCP holds the TCP route configuration.
                   properties:
                     match:
-                      description: 'Match defines the router''s rule. More info: https://doc.traefik.io/traefik/v2.7/routing/routers/#rule_1'
+                      description: 'Match defines the router''s rule. More info: https://doc.traefik.io/traefik/v2.8/routing/routers/#rule_1'
                       type: string
                     middlewares:
                       description: Middlewares defines the list of references to MiddlewareTCP
@@ -73,7 +73,7 @@ spec:
                       type: array
                     priority:
                       description: 'Priority defines the router''s priority. More
-                        info: https://doc.traefik.io/traefik/v2.7/routing/routers/#priority_1'
+                        info: https://doc.traefik.io/traefik/v2.8/routing/routers/#priority_1'
                       type: integer
                     services:
                       description: Services defines the list of TCP services.
@@ -98,7 +98,7 @@ spec:
                             x-kubernetes-int-or-string: true
                           proxyProtocol:
                             description: 'ProxyProtocol defines the PROXY protocol
-                              configuration. More info: https://doc.traefik.io/traefik/v2.7/routing/services/#proxy-protocol'
+                              configuration. More info: https://doc.traefik.io/traefik/v2.8/routing/services/#proxy-protocol'
                             properties:
                               version:
                                 description: Version defines the PROXY Protocol version
@@ -129,16 +129,16 @@ spec:
                 type: array
               tls:
                 description: 'TLS defines the TLS configuration on a layer 4 / TCP
-                  Route. More info: https://doc.traefik.io/traefik/v2.7/routing/routers/#tls_1'
+                  Route. More info: https://doc.traefik.io/traefik/v2.8/routing/routers/#tls_1'
                 properties:
                   certResolver:
                     description: 'CertResolver defines the name of the certificate
                       resolver to use. Cert resolvers have to be configured in the
-                      static configuration. More info: https://doc.traefik.io/traefik/v2.7/https/acme/#certificate-resolvers'
+                      static configuration. More info: https://doc.traefik.io/traefik/v2.8/https/acme/#certificate-resolvers'
                     type: string
                   domains:
                     description: 'Domains defines the list of domains that will be
-                      used to issue certificates. More info: https://doc.traefik.io/traefik/v2.7/routing/routers/#domains'
+                      used to issue certificates. More info: https://doc.traefik.io/traefik/v2.8/routing/routers/#domains'
                     items:
                       description: Domain holds a domain name with SANs.
                       properties:
@@ -156,7 +156,7 @@ spec:
                   options:
                     description: 'Options defines the reference to a TLSOption, that
                       specifies the parameters of the TLS connection. If not defined,
-                      the `default` TLSOption is used. More info: https://doc.traefik.io/traefik/v2.7/https/tls/#tls-options'
+                      the `default` TLSOption is used. More info: https://doc.traefik.io/traefik/v2.8/https/tls/#tls-options'
                     properties:
                       name:
                         description: Name defines the name of the referenced Traefik

docs/content/reference/dynamic-configuration/traefik.containo.us_ingressrouteudps.yaml

@@ -39,7 +39,7 @@ spec:
               entryPoints:
                 description: 'EntryPoints defines the list of entry point names to
                   bind to. Entry points have to be configured in the static configuration.
-                  More info: https://doc.traefik.io/traefik/v2.7/routing/entrypoints/
+                  More info: https://doc.traefik.io/traefik/v2.8/routing/entrypoints/
                   Default: all.'
                 items:
                   type: string

docs/content/reference/dynamic-configuration/traefik.containo.us_middlewares.yaml

@@ -20,7 +20,7 @@ spec:
     schema:
       openAPIV3Schema:
         description: 'Middleware is the CRD implementation of a Traefik Middleware.
-          More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/overview/'
+          More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/overview/'
         properties:
           apiVersion:
             description: 'APIVersion defines the versioned schema of this representation
@@ -40,7 +40,7 @@ spec:
               addPrefix:
                 description: 'AddPrefix holds the add prefix middleware configuration.
                   This middleware updates the path of a request before forwarding
-                  it. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/addprefix/'
+                  it. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/addprefix/'
                 properties:
                   prefix:
                     description: Prefix is the string to add before the current path
@@ -50,11 +50,11 @@ spec:
               basicAuth:
                 description: 'BasicAuth holds the basic auth middleware configuration.
                   This middleware restricts access to your services to known users.
-                  More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/basicauth/'
+                  More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/basicauth/'
                 properties:
                   headerField:
                     description: 'HeaderField defines a header field to store the
-                      authenticated user. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/basicauth/#headerfield'
+                      authenticated user. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/basicauth/#headerfield'
                     type: string
                   realm:
                     description: 'Realm allows the protected resources on a server
@@ -74,7 +74,7 @@ spec:
               buffering:
                 description: 'Buffering holds the buffering middleware configuration.
                   This middleware retries or limits the size of requests that can
-                  be forwarded to backends. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/buffering/#maxrequestbodybytes'
+                  be forwarded to backends. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/buffering/#maxrequestbodybytes'
                 properties:
                   maxRequestBodyBytes:
                     description: 'MaxRequestBodyBytes defines the maximum allowed
@@ -107,13 +107,13 @@ spec:
                   retryExpression:
                     description: 'RetryExpression defines the retry conditions. It
                       is a logical combination of functions with operators AND (&&)
-                      and OR (||). More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/buffering/#retryexpression'
+                      and OR (||). More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/buffering/#retryexpression'
                     type: string
                 type: object
               chain:
                 description: 'Chain holds the configuration of the chain middleware.
                   This middleware enables to define reusable combinations of other
-                  pieces of middleware. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/chain/'
+                  pieces of middleware. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/chain/'
                 properties:
                   middlewares:
                     description: Middlewares is the list of MiddlewareRef which composes
@@ -135,21 +135,39 @@ spec:
                     type: array
                 type: object
               circuitBreaker:
-                description: 'CircuitBreaker holds the circuit breaker middleware
-                  configuration. This middleware protects the system from stacking
-                  requests to unhealthy services, resulting in cascading failures.
-                  More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/circuitbreaker/'
+                description: CircuitBreaker holds the circuit breaker configuration.
                 properties:
+                  checkPeriod:
+                    anyOf:
+                    - type: integer
+                    - type: string
+                    description: CheckPeriod is the interval between successive checks
+                      of the circuit breaker condition (when in standby state).
+                    x-kubernetes-int-or-string: true
                   expression:
-                    description: Expression defines the expression that, once matched,
-                      opens the circuit breaker and applies the fallback mechanism
-                      instead of calling the services.
+                    description: Expression is the condition that triggers the tripped
+                      state.
                     type: string
+                  fallbackDuration:
+                    anyOf:
+                    - type: integer
+                    - type: string
+                    description: FallbackDuration is the duration for which the circuit
+                      breaker will wait before trying to recover (from a tripped state).
+                    x-kubernetes-int-or-string: true
+                  recoveryDuration:
+                    anyOf:
+                    - type: integer
+                    - type: string
+                    description: RecoveryDuration is the duration for which the circuit
+                      breaker will try to recover (as soon as it is in recovering
+                      state).
+                    x-kubernetes-int-or-string: true
                 type: object
               compress:
                 description: 'Compress holds the compress middleware configuration.
                   This middleware compresses responses before sending them to the
-                  client, using gzip compression. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/compress/'
+                  client, using gzip compression. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/compress/'
                 properties:
                   excludedContentTypes:
                     description: ExcludedContentTypes defines the list of content
@@ -183,11 +201,11 @@ spec:
               digestAuth:
                 description: 'DigestAuth holds the digest auth middleware configuration.
                   This middleware restricts access to your services to known users.
-                  More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/digestauth/'
+                  More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/digestauth/'
                 properties:
                   headerField:
                     description: 'HeaderField defines a header field to store the
-                      authenticated user. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/basicauth/#headerfield'
+                      authenticated user. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/basicauth/#headerfield'
                     type: string
                   realm:
                     description: 'Realm allows the protected resources on a server
@@ -206,7 +224,7 @@ spec:
               errors:
                 description: 'ErrorPage holds the custom error middleware configuration.
                   This middleware returns a custom page in lieu of the default, according
-                  to configured ranges of HTTP Status codes. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/errorpages/'
+                  to configured ranges of HTTP Status codes. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/errorpages/'
                 properties:
                   query:
                     description: Query defines the URL for the error page (hosted
@@ -215,7 +233,7 @@ spec:
                     type: string
                   service:
                     description: 'Service defines the reference to a Kubernetes Service
-                      that will serve the error page. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/errorpages/#service'
+                      that will serve the error page. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/errorpages/#service'
                     properties:
                       kind:
                         description: Kind defines the kind of the Service.
@@ -272,7 +290,7 @@ spec:
                         type: string
                       sticky:
                         description: 'Sticky defines the sticky sessions configuration.
-                          More info: https://doc.traefik.io/traefik/v2.7/routing/services/#sticky-sessions'
+                          More info: https://doc.traefik.io/traefik/v2.8/routing/services/#sticky-sessions'
                         properties:
                           cookie:
                             description: Cookie defines the sticky cookie configuration.
@@ -321,7 +339,7 @@ spec:
               forwardAuth:
                 description: 'ForwardAuth holds the forward auth middleware configuration.
                   This middleware delegates the request authentication to a Service.
-                  More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/forwardauth/'
+                  More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/forwardauth/'
                 properties:
                   address:
                     description: Address defines the authentication server address.
@@ -344,7 +362,7 @@ spec:
                     description: 'AuthResponseHeadersRegex defines the regex to match
                       headers to copy from the authentication server response and
                       set on forwarded request, after stripping all headers that match
-                      the regex. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/forwardauth/#authresponseheadersregex'
+                      the regex. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/forwardauth/#authresponseheadersregex'
                     type: string
                   tls:
                     description: TLS defines the configuration used to secure the
@@ -375,7 +393,7 @@ spec:
               headers:
                 description: 'Headers holds the headers middleware configuration.
                   This middleware manages the requests and responses headers. More
-                  info: https://doc.traefik.io/traefik/v2.7/middlewares/http/headers/#customrequestheaders'
+                  info: https://doc.traefik.io/traefik/v2.8/middlewares/http/headers/#customrequestheaders'
                 properties:
                   accessControlAllowCredentials:
                     description: AccessControlAllowCredentials defines whether the
@@ -536,7 +554,7 @@ spec:
               inFlightReq:
                 description: 'InFlightReq holds the in-flight request middleware configuration.
                   This middleware limits the number of requests being processed and
-                  served concurrently. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/inflightreq/'
+                  served concurrently. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/inflightreq/'
                 properties:
                   amount:
                     description: Amount defines the maximum amount of allowed simultaneous
@@ -550,11 +568,11 @@ spec:
                       group requests as originating from a common source. If several
                       strategies are defined at the same time, an error will be raised.
                       If none are set, the default is to use the requestHost. More
-                      info: https://doc.traefik.io/traefik/v2.7/middlewares/http/inflightreq/#sourcecriterion'
+                      info: https://doc.traefik.io/traefik/v2.8/middlewares/http/inflightreq/#sourcecriterion'
                     properties:
                       ipStrategy:
                         description: 'IPStrategy holds the IP strategy configuration
-                          used by Traefik to determine the client IP. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/ipwhitelist/#ipstrategy'
+                          used by Traefik to determine the client IP. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/ipwhitelist/#ipstrategy'
                         properties:
                           depth:
                             description: Depth tells Traefik to use the X-Forwarded-For
@@ -582,11 +600,11 @@ spec:
               ipWhiteList:
                 description: 'IPWhiteList holds the IP whitelist middleware configuration.
                   This middleware accepts / refuses requests based on the client IP.
-                  More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/ipwhitelist/'
+                  More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/ipwhitelist/'
                 properties:
                   ipStrategy:
                     description: 'IPStrategy holds the IP strategy configuration used
-                      by Traefik to determine the client IP. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/ipwhitelist/#ipstrategy'
+                      by Traefik to determine the client IP. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/ipwhitelist/#ipstrategy'
                     properties:
                       depth:
                         description: Depth tells Traefik to use the X-Forwarded-For
@@ -610,7 +628,7 @@ spec:
               passTLSClientCert:
                 description: 'PassTLSClientCert holds the pass TLS client cert middleware
                   configuration. This middleware adds the selected data from the passed
-                  client TLS certificate to a header. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/passtlsclientcert/'
+                  client TLS certificate to a header. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/passtlsclientcert/'
                 properties:
                   info:
                     description: Info selects the specific client certificate details
@@ -717,7 +735,7 @@ spec:
               rateLimit:
                 description: 'RateLimit holds the rate limit configuration. This middleware
                   ensures that services will receive a fair amount of requests, and
-                  allows one to define what fair is. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/ratelimit/'
+                  allows one to define what fair is. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/ratelimit/'
                 properties:
                   average:
                     description: Average is the maximum rate, by default in requests/s,
@@ -750,7 +768,7 @@ spec:
                     properties:
                       ipStrategy:
                         description: 'IPStrategy holds the IP strategy configuration
-                          used by Traefik to determine the client IP. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/ipwhitelist/#ipstrategy'
+                          used by Traefik to determine the client IP. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/ipwhitelist/#ipstrategy'
                         properties:
                           depth:
                             description: Depth tells Traefik to use the X-Forwarded-For
@@ -778,7 +796,7 @@ spec:
               redirectRegex:
                 description: 'RedirectRegex holds the redirect regex middleware configuration.
                   This middleware redirects a request using regex matching and replacement.
-                  More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/redirectregex/#regex'
+                  More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/redirectregex/#regex'
                 properties:
                   permanent:
                     description: Permanent defines whether the redirection is permanent
@@ -796,7 +814,7 @@ spec:
               redirectScheme:
                 description: 'RedirectScheme holds the redirect scheme middleware
                   configuration. This middleware redirects requests from a scheme/port
-                  to another. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/redirectscheme/'
+                  to another. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/redirectscheme/'
                 properties:
                   permanent:
                     description: Permanent defines whether the redirection is permanent
@@ -812,7 +830,7 @@ spec:
               replacePath:
                 description: 'ReplacePath holds the replace path middleware configuration.
                   This middleware replaces the path of the request URL and store the
-                  original path in an X-Replaced-Path header. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/replacepath/'
+                  original path in an X-Replaced-Path header. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/replacepath/'
                 properties:
                   path:
                     description: Path defines the path to use as replacement in the
@@ -822,7 +840,7 @@ spec:
               replacePathRegex:
                 description: 'ReplacePathRegex holds the replace path regex middleware
                   configuration. This middleware replaces the path of a URL using
-                  regex matching and replacement. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/replacepathregex/'
+                  regex matching and replacement. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/replacepathregex/'
                 properties:
                   regex:
                     description: Regex defines the regular expression used to match
@@ -838,7 +856,7 @@ spec:
                   middleware reissues requests a given number of times to a backend
                   server if that server does not reply. As soon as the server answers,
                   the middleware stops retrying, regardless of the response status.
-                  More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/retry/'
+                  More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/retry/'
                 properties:
                   attempts:
                     description: Attempts defines how many times the request should
@@ -858,7 +876,7 @@ spec:
               stripPrefix:
                 description: 'StripPrefix holds the strip prefix middleware configuration.
                   This middleware removes the specified prefixes from the URL path.
-                  More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/stripprefix/'
+                  More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/stripprefix/'
                 properties:
                   forceSlash:
                     description: 'ForceSlash ensures that the resulting stripped path
@@ -875,7 +893,7 @@ spec:
               stripPrefixRegex:
                 description: 'StripPrefixRegex holds the strip prefix regex middleware
                   configuration. This middleware removes the matching prefixes from
-                  the URL path. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/stripprefixregex/'
+                  the URL path. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/stripprefixregex/'
                 properties:
                   regex:
                     description: Regex defines the regular expression to match the

docs/content/reference/dynamic-configuration/traefik.containo.us_middlewaretcps.yaml

@@ -20,7 +20,7 @@ spec:
     schema:
       openAPIV3Schema:
         description: 'MiddlewareTCP is the CRD implementation of a Traefik TCP middleware.
-          More info: https://doc.traefik.io/traefik/v2.7/middlewares/overview/'
+          More info: https://doc.traefik.io/traefik/v2.8/middlewares/overview/'
         properties:
           apiVersion:
             description: 'APIVersion defines the versioned schema of this representation

docs/content/reference/dynamic-configuration/traefik.containo.us_serverstransports.yaml

@@ -22,7 +22,7 @@ spec:
         description: 'ServersTransport is the CRD implementation of a ServersTransport.
           If no serversTransport is specified, the default@internal will be used.
           The default@internal serversTransport is created from the static configuration.
-          More info: https://doc.traefik.io/traefik/v2.7/routing/services/#serverstransport_1'
+          More info: https://doc.traefik.io/traefik/v2.8/routing/services/#serverstransport_1'
         properties:
           apiVersion:
             description: 'APIVersion defines the versioned schema of this representation

docs/content/reference/dynamic-configuration/traefik.containo.us_tlsoptions.yaml

@@ -21,7 +21,7 @@ spec:
       openAPIV3Schema:
         description: 'TLSOption is the CRD implementation of a Traefik TLS Option,
           allowing to configure some parameters of the TLS connection. More info:
-          https://doc.traefik.io/traefik/v2.7/https/tls/#tls-options'
+          https://doc.traefik.io/traefik/v2.8/https/tls/#tls-options'
         properties:
           apiVersion:
             description: 'APIVersion defines the versioned schema of this representation
@@ -41,13 +41,13 @@ spec:
               alpnProtocols:
                 description: 'ALPNProtocols defines the list of supported application
                   level protocols for the TLS handshake, in order of preference. More
-                  info: https://doc.traefik.io/traefik/v2.7/https/tls/#alpn-protocols'
+                  info: https://doc.traefik.io/traefik/v2.8/https/tls/#alpn-protocols'
                 items:
                   type: string
                 type: array
               cipherSuites:
                 description: 'CipherSuites defines the list of supported cipher suites
-                  for TLS versions up to TLS 1.2. More info: https://doc.traefik.io/traefik/v2.7/https/tls/#cipher-suites'
+                  for TLS versions up to TLS 1.2. More info: https://doc.traefik.io/traefik/v2.8/https/tls/#cipher-suites'
                 items:
                   type: string
                 type: array
@@ -74,7 +74,7 @@ spec:
                 type: object
               curvePreferences:
                 description: 'CurvePreferences defines the preferred elliptic curves
-                  in a specific order. More info: https://doc.traefik.io/traefik/v2.7/https/tls/#curve-preferences'
+                  in a specific order. More info: https://doc.traefik.io/traefik/v2.8/https/tls/#curve-preferences'
                 items:
                   type: string
                 type: array

docs/content/reference/dynamic-configuration/traefik.containo.us_tlsstores.yaml

@@ -22,7 +22,7 @@ spec:
         description: 'TLSStore is the CRD implementation of a Traefik TLS Store. For
           the time being, only the TLSStore named default is supported. This means
           that you cannot have two stores that are named default in different Kubernetes
-          namespaces. More info: https://doc.traefik.io/traefik/v2.7/https/tls/#certificates-stores'
+          namespaces. More info: https://doc.traefik.io/traefik/v2.8/https/tls/#certificates-stores'
         properties:
           apiVersion:
             description: 'APIVersion defines the versioned schema of this representation
@@ -39,6 +39,20 @@ spec:
           spec:
             description: TLSStoreSpec defines the desired state of a TLSStore.
             properties:
+              certificates:
+                description: Certificates is a list of secret names, each secret holding
+                  a key/certificate pair to add to the store.
+                items:
+                  description: Certificate holds a secret name for the TLSStore resource.
+                  properties:
+                    secretName:
+                      description: SecretName is the name of the referenced Kubernetes
+                        Secret to specify the certificate details.
+                      type: string
+                  required:
+                  - secretName
+                  type: object
+                type: array
               defaultCertificate:
                 description: DefaultCertificate defines the default certificate configuration.
                 properties:
@@ -49,8 +63,6 @@ spec:
                 required:
                 - secretName
                 type: object
-            required:
-            - defaultCertificate
             type: object
         required:
         - metadata

docs/content/reference/dynamic-configuration/traefik.containo.us_traefikservices.yaml

@@ -21,7 +21,7 @@ spec:
       openAPIV3Schema:
         description: 'TraefikService is the CRD implementation of a Traefik Service.
           TraefikService object allows to:  - Apply weight to Services on load-balancing  -
-          Mirror traffic on services More info: https://doc.traefik.io/traefik/v2.7/routing/providers/kubernetes-crd/#kind-traefikservice'
+          Mirror traffic on services More info: https://doc.traefik.io/traefik/v2.8/routing/providers/kubernetes-crd/#kind-traefikservice'
         properties:
           apiVersion:
             description: 'APIVersion defines the versioned schema of this representation
@@ -120,7 +120,7 @@ spec:
                           type: string
                         sticky:
                           description: 'Sticky defines the sticky sessions configuration.
-                            More info: https://doc.traefik.io/traefik/v2.7/routing/services/#sticky-sessions'
+                            More info: https://doc.traefik.io/traefik/v2.8/routing/services/#sticky-sessions'
                           properties:
                             cookie:
                               description: Cookie defines the sticky cookie configuration.
@@ -204,7 +204,7 @@ spec:
                     type: string
                   sticky:
                     description: 'Sticky defines the sticky sessions configuration.
-                      More info: https://doc.traefik.io/traefik/v2.7/routing/services/#sticky-sessions'
+                      More info: https://doc.traefik.io/traefik/v2.8/routing/services/#sticky-sessions'
                     properties:
                       cookie:
                         description: Cookie defines the sticky cookie configuration.
@@ -304,7 +304,7 @@ spec:
                           type: string
                         sticky:
                           description: 'Sticky defines the sticky sessions configuration.
-                            More info: https://doc.traefik.io/traefik/v2.7/routing/services/#sticky-sessions'
+                            More info: https://doc.traefik.io/traefik/v2.8/routing/services/#sticky-sessions'
                           properties:
                             cookie:
                               description: Cookie defines the sticky cookie configuration.
@@ -343,7 +343,7 @@ spec:
                     type: array
                   sticky:
                     description: 'Sticky defines whether sticky sessions are enabled.
-                      More info: https://doc.traefik.io/traefik/v2.7/routing/providers/kubernetes-crd/#stickiness-and-load-balancing'
+                      More info: https://doc.traefik.io/traefik/v2.8/routing/providers/kubernetes-crd/#stickiness-and-load-balancing'
                     properties:
                       cookie:
                         description: Cookie defines the sticky cookie configuration.

docs/content/reference/static-configuration/cli-ref.md

@@ -147,8 +147,11 @@ Subject alternative names.
 `--entrypoints.<name>.http.tls.options`:  
 Default TLS options for the routers linked to the entry point.
 
+`--entrypoints.<name>.http2.maxconcurrentstreams`:  
+Specifies the number of concurrent streams per connection that each client is allowed to initiate. (Default: ```250```)
+
 `--entrypoints.<name>.http3`:  
-HTTP3 configuration. (Default: ```false```)
+HTTP/3 configuration. (Default: ```false```)
 
 `--entrypoints.<name>.http3.advertisedport`:  
 UDP port to advertise, on which HTTP/3 is available. (Default: ```0```)
@@ -400,7 +403,10 @@ Enable Consul backend with default settings. (Default: ```false```)
 KV store endpoints (Default: ```127.0.0.1:8500```)
 
 `--providers.consul.namespace`:  
-KV Namespace
+Sets the namespace used to discover the configuration (Consul Enterprise only).
+
+`--providers.consul.namespaces`:  
+Sets the namespaces used to discover the configuration (Consul Enterprise only).
 
 `--providers.consul.password`:  
 KV Password
@@ -489,11 +495,14 @@ Expose containers by default. (Default: ```true```)
 `--providers.consulcatalog.namespace`:  
 Sets the namespace used to discover services (Consul Enterprise only).
 
+`--providers.consulcatalog.namespaces`:  
+Sets the namespaces used to discover services (Consul Enterprise only).
+
 `--providers.consulcatalog.prefix`:  
-Prefix for consul service tags. Default 'traefik' (Default: ```traefik```)
+Prefix for consul service tags. (Default: ```traefik```)
 
 `--providers.consulcatalog.refreshinterval`:  
-Interval for check Consul API. Default 15s (Default: ```15```)
+Interval for check Consul API. (Default: ```15```)
 
 `--providers.consulcatalog.requireconsistent`:  
 Forces the read to be fully consistent. (Default: ```false```)
@@ -591,9 +600,6 @@ Enable Etcd backend with default settings. (Default: ```false```)
 `--providers.etcd.endpoints`:  
 KV store endpoints (Default: ```127.0.0.1:2379```)
 
-`--providers.etcd.namespace`:  
-KV Namespace
-
 `--providers.etcd.password`:  
 KV Password
 
@@ -816,6 +822,57 @@ Display additional provider logs. (Default: ```false```)
 `--providers.marathon.watch`:  
 Watch provider. (Default: ```true```)
 
+`--providers.nomad`:  
+Enable Nomad backend with default settings. (Default: ```false```)
+
+`--providers.nomad.constraints`:  
+Constraints is an expression that Traefik matches against the Nomad service's tags to determine whether to create route(s) for that service.
+
+`--providers.nomad.defaultrule`:  
+Default rule. (Default: ```Host(`{{ normalize .Name }}`)```)
+
+`--providers.nomad.endpoint.address`:  
+The address of the Nomad server, including scheme and port.
+
+`--providers.nomad.endpoint.endpointwaittime`:  
+WaitTime limits how long a Watch will block. If not provided, the agent default values will be used (Default: ```0```)
+
+`--providers.nomad.endpoint.region`:  
+Nomad region to use. If not provided, the local agent region is used.
+
+`--providers.nomad.endpoint.tls.ca`:  
+TLS CA
+
+`--providers.nomad.endpoint.tls.caoptional`:  
+TLS CA.Optional (Default: ```false```)
+
+`--providers.nomad.endpoint.tls.cert`:  
+TLS cert
+
+`--providers.nomad.endpoint.tls.insecureskipverify`:  
+TLS insecure skip verify (Default: ```false```)
+
+`--providers.nomad.endpoint.tls.key`:  
+TLS key
+
+`--providers.nomad.endpoint.token`:  
+Token is used to provide a per-request ACL token.
+
+`--providers.nomad.exposedbydefault`:  
+Expose Nomad services by default. (Default: ```true```)
+
+`--providers.nomad.namespace`:  
+Sets the Nomad namespace used to discover services.
+
+`--providers.nomad.prefix`:  
+Prefix for nomad service tags. (Default: ```traefik```)
+
+`--providers.nomad.refreshinterval`:  
+Interval for polling Nomad API. (Default: ```15```)
+
+`--providers.nomad.stale`:  
+Use stale consistency for catalog reads. (Default: ```false```)
+
 `--providers.plugin.<name>`:  
 Plugins configuration.
 
@@ -855,9 +912,6 @@ Enable Redis backend with default settings. (Default: ```false```)
 `--providers.redis.endpoints`:  
 KV store endpoints (Default: ```127.0.0.1:6379```)
 
-`--providers.redis.namespace`:  
-KV Namespace
-
 `--providers.redis.password`:  
 KV Password
 
@@ -897,9 +951,6 @@ Enable ZooKeeper backend with default settings. (Default: ```false```)
 `--providers.zookeeper.endpoints`:  
 KV store endpoints (Default: ```127.0.0.1:2181```)
 
-`--providers.zookeeper.namespace`:  
-KV Namespace
-
 `--providers.zookeeper.password`:  
 KV Password
 

docs/content/reference/static-configuration/env-ref.md

@@ -114,8 +114,11 @@ Trust only forwarded headers from selected IPs.
 `TRAEFIK_ENTRYPOINTS_<NAME>_HTTP`:  
 HTTP configuration.
 
+`TRAEFIK_ENTRYPOINTS_<NAME>_HTTP2_MAXCONCURRENTSTREAMS`:  
+Specifies the number of concurrent streams per connection that each client is allowed to initiate. (Default: ```250```)
+
 `TRAEFIK_ENTRYPOINTS_<NAME>_HTTP3`:  
-HTTP3 configuration. (Default: ```false```)
+HTTP/3 configuration. (Default: ```false```)
 
 `TRAEFIK_ENTRYPOINTS_<NAME>_HTTP3_ADVERTISEDPORT`:  
 UDP port to advertise, on which HTTP/3 is available. (Default: ```0```)
@@ -456,11 +459,14 @@ Expose containers by default. (Default: ```true```)
 `TRAEFIK_PROVIDERS_CONSULCATALOG_NAMESPACE`:  
 Sets the namespace used to discover services (Consul Enterprise only).
 
+`TRAEFIK_PROVIDERS_CONSULCATALOG_NAMESPACES`:  
+Sets the namespaces used to discover services (Consul Enterprise only).
+
 `TRAEFIK_PROVIDERS_CONSULCATALOG_PREFIX`:  
-Prefix for consul service tags. Default 'traefik' (Default: ```traefik```)
+Prefix for consul service tags. (Default: ```traefik```)
 
 `TRAEFIK_PROVIDERS_CONSULCATALOG_REFRESHINTERVAL`:  
-Interval for check Consul API. Default 15s (Default: ```15```)
+Interval for check Consul API. (Default: ```15```)
 
 `TRAEFIK_PROVIDERS_CONSULCATALOG_REQUIRECONSISTENT`:  
 Forces the read to be fully consistent. (Default: ```false```)
@@ -478,7 +484,10 @@ Watch Consul API events. (Default: ```false```)
 KV store endpoints (Default: ```127.0.0.1:8500```)
 
 `TRAEFIK_PROVIDERS_CONSUL_NAMESPACE`:  
-KV Namespace
+Sets the namespace used to discover the configuration (Consul Enterprise only).
+
+`TRAEFIK_PROVIDERS_CONSUL_NAMESPACES`:  
+Sets the namespaces used to discover the configuration (Consul Enterprise only).
 
 `TRAEFIK_PROVIDERS_CONSUL_PASSWORD`:  
 KV Password
@@ -591,9 +600,6 @@ Enable Etcd backend with default settings. (Default: ```false```)
 `TRAEFIK_PROVIDERS_ETCD_ENDPOINTS`:  
 KV store endpoints (Default: ```127.0.0.1:2379```)
 
-`TRAEFIK_PROVIDERS_ETCD_NAMESPACE`:  
-KV Namespace
-
 `TRAEFIK_PROVIDERS_ETCD_PASSWORD`:  
 KV Password
 
@@ -816,6 +822,57 @@ Display additional provider logs. (Default: ```false```)
 `TRAEFIK_PROVIDERS_MARATHON_WATCH`:  
 Watch provider. (Default: ```true```)
 
+`TRAEFIK_PROVIDERS_NOMAD`:  
+Enable Nomad backend with default settings. (Default: ```false```)
+
+`TRAEFIK_PROVIDERS_NOMAD_CONSTRAINTS`:  
+Constraints is an expression that Traefik matches against the Nomad service's tags to determine whether to create route(s) for that service.
+
+`TRAEFIK_PROVIDERS_NOMAD_DEFAULTRULE`:  
+Default rule. (Default: ```Host(`{{ normalize .Name }}`)```)
+
+`TRAEFIK_PROVIDERS_NOMAD_ENDPOINT_ADDRESS`:  
+The address of the Nomad server, including scheme and port.
+
+`TRAEFIK_PROVIDERS_NOMAD_ENDPOINT_ENDPOINTWAITTIME`:  
+WaitTime limits how long a Watch will block. If not provided, the agent default values will be used (Default: ```0```)
+
+`TRAEFIK_PROVIDERS_NOMAD_ENDPOINT_REGION`:  
+Nomad region to use. If not provided, the local agent region is used.
+
+`TRAEFIK_PROVIDERS_NOMAD_ENDPOINT_TLS_CA`:  
+TLS CA
+
+`TRAEFIK_PROVIDERS_NOMAD_ENDPOINT_TLS_CAOPTIONAL`:  
+TLS CA.Optional (Default: ```false```)
+
+`TRAEFIK_PROVIDERS_NOMAD_ENDPOINT_TLS_CERT`:  
+TLS cert
+
+`TRAEFIK_PROVIDERS_NOMAD_ENDPOINT_TLS_INSECURESKIPVERIFY`:  
+TLS insecure skip verify (Default: ```false```)
+
+`TRAEFIK_PROVIDERS_NOMAD_ENDPOINT_TLS_KEY`:  
+TLS key
+
+`TRAEFIK_PROVIDERS_NOMAD_ENDPOINT_TOKEN`:  
+Token is used to provide a per-request ACL token.
+
+`TRAEFIK_PROVIDERS_NOMAD_EXPOSEDBYDEFAULT`:  
+Expose Nomad services by default. (Default: ```true```)
+
+`TRAEFIK_PROVIDERS_NOMAD_NAMESPACE`:  
+Sets the Nomad namespace used to discover services.
+
+`TRAEFIK_PROVIDERS_NOMAD_PREFIX`:  
+Prefix for nomad service tags. (Default: ```traefik```)
+
+`TRAEFIK_PROVIDERS_NOMAD_REFRESHINTERVAL`:  
+Interval for polling Nomad API. (Default: ```15```)
+
+`TRAEFIK_PROVIDERS_NOMAD_STALE`:  
+Use stale consistency for catalog reads. (Default: ```false```)
+
 `TRAEFIK_PROVIDERS_PLUGIN_<NAME>`:  
 Plugins configuration.
 
@@ -855,9 +912,6 @@ Enable Redis backend with default settings. (Default: ```false```)
 `TRAEFIK_PROVIDERS_REDIS_ENDPOINTS`:  
 KV store endpoints (Default: ```127.0.0.1:6379```)
 
-`TRAEFIK_PROVIDERS_REDIS_NAMESPACE`:  
-KV Namespace
-
 `TRAEFIK_PROVIDERS_REDIS_PASSWORD`:  
 KV Password
 
@@ -897,9 +951,6 @@ Enable ZooKeeper backend with default settings. (Default: ```false```)
 `TRAEFIK_PROVIDERS_ZOOKEEPER_ENDPOINTS`:  
 KV store endpoints (Default: ```127.0.0.1:2181```)
 
-`TRAEFIK_PROVIDERS_ZOOKEEPER_NAMESPACE`:  
-KV Namespace
-
 `TRAEFIK_PROVIDERS_ZOOKEEPER_PASSWORD`:  
 KV Password
 

docs/content/reference/static-configuration/file.toml

@@ -47,6 +47,8 @@
         [[entryPoints.EntryPoint0.http.tls.domains]]
           main = "foobar"
           sans = ["foobar", "foobar"]
+    [entryPoints.EntryPoint0.http2]
+      maxConcurrentStreams = 42
     [entryPoints.EntryPoint0.http3]
       advertisedPort = 42
     [entryPoints.EntryPoint0.udp]
@@ -155,6 +157,7 @@
     connectByDefault = true
     serviceName = "foobar"
     namespace = "foobar"
+    namespaces = ["foobar", "foobar"]
     watch = true
     [providers.consulCatalog.endpoint]
       address = "foobar"
@@ -171,6 +174,25 @@
       [providers.consulCatalog.endpoint.httpAuth]
         username = "foobar"
         password = "foobar"
+  [providers.nomad]
+    constraints = "foobar"
+    prefix = "foobar"
+    refreshInterval = "42s"
+    stale = true
+    exposedByDefault = true
+    defaultRule = "foobar"
+    namespace = "foobar"
+    [providers.nomad.endpoint]
+      address = "foobar"
+      region = "foobar"
+      token = "foobar"
+      endpointWaitTime = "42s"
+      [providers.nomad.endpoint.tls]
+        ca = "foobar"
+        caOptional = true
+        cert = "foobar"
+        key = "foobar"
+        insecureSkipVerify = true
   [providers.ecs]
     constraints = "foobar"
     exposedByDefault = true
@@ -188,6 +210,7 @@
     password = "foobar"
     token = "foobar"
     namespace = "foobar"
+    namespaces = ["foobar", "foobar"]
     [providers.consul.tls]
       ca = "foobar"
       caOptional = true
@@ -200,7 +223,6 @@
     username = "foobar"
     password = "foobar"
     token = "foobar"
-    namespace = "foobar"
     [providers.etcd.tls]
       ca = "foobar"
       caOptional = true
@@ -213,7 +235,6 @@
     username = "foobar"
     password = "foobar"
     token = "foobar"
-    namespace = "foobar"
     [providers.zooKeeper.tls]
       ca = "foobar"
       caOptional = true
@@ -226,7 +247,6 @@
     username = "foobar"
     password = "foobar"
     token = "foobar"
-    namespace = "foobar"
     [providers.redis.tls]
       ca = "foobar"
       caOptional = true

docs/content/reference/static-configuration/file.yaml

@@ -30,8 +30,8 @@ entryPoints:
     forwardedHeaders:
       insecure: true
       trustedIPs:
-        - foobar
-        - foobar
+      - foobar
+      - foobar
     http:
       redirections:
         entryPoint:
@@ -54,6 +54,8 @@ entryPoints:
             sans:
               - foobar
               - foobar
+    http2:
+      maxConcurrentStreams: 42
     http3:
       advertisedPort: 42
     udp:
@@ -167,6 +169,9 @@ providers:
     connectByDefault: true
     serviceName: foobar
     namespace: foobar
+    namespaces:
+      - foobar
+      - foobar
     watch: true
     endpoint:
       address: foobar
@@ -183,6 +188,25 @@ providers:
       httpAuth:
         username: foobar
         password: foobar
+  nomad:
+    constraints: foobar
+    prefix: foobar
+    refreshInterval: 42s
+    stale: true
+    exposedByDefault: true
+    defaultRule: foobar
+    namespace: foobar
+    endpoint:
+      address: foobar
+      region: foobar
+      token: foobar
+      endpointWaitTime: 42s
+      tls:
+        ca: foobar
+        caOptional: true
+        cert: foobar
+        key: foobar
+        insecureSkipVerify: true
   ecs:
     constraints: foobar
     exposedByDefault: true
@@ -204,6 +228,9 @@ providers:
     password: foobar
     token: foobar
     namespace: foobar
+    namespaces:
+      - foobar
+      - foobar
     tls:
       ca: foobar
       caOptional: true
@@ -218,7 +245,6 @@ providers:
     username: foobar
     password: foobar
     token: foobar
-    namespace: foobar
     tls:
       ca: foobar
       caOptional: true
@@ -233,7 +259,6 @@ providers:
     username: foobar
     password: foobar
     token: foobar
-    namespace: foobar
     tls:
       ca: foobar
       caOptional: true
@@ -248,7 +273,6 @@ providers:
     username: foobar
     password: foobar
     token: foobar
-    namespace: foobar
     tls:
       ca: foobar
       caOptional: true

docs/content/routing/entrypoints.md

@@ -105,6 +105,8 @@ They can be defined by using a file (YAML or TOML) or CLI arguments.
     entryPoints:
       name:
         address: ":8888" # same as ":8888/tcp"
+        http2:
+          maxConcurrentStreams: 42
         http3:
           advertisedPort: 8888
         transport:
@@ -132,6 +134,8 @@ They can be defined by using a file (YAML or TOML) or CLI arguments.
     [entryPoints]
       [entryPoints.name]
         address = ":8888" # same as ":8888/tcp"
+        [entryPoints.name.http2]
+          maxConcurrentStreams = 42
         [entryPoints.name.http3]
           advertisedPort = 8888
         [entryPoints.name.transport]
@@ -153,6 +157,7 @@ They can be defined by using a file (YAML or TOML) or CLI arguments.
     ```bash tab="CLI"
     ## Static configuration
     --entryPoints.name.address=:8888 # same as :8888/tcp
+    --entryPoints.name.http2.maxConcurrentStreams=42
     --entryPoints.name.http3.advertisedport=8888
     --entryPoints.name.transport.lifeCycle.requestAcceptGraceTimeout=42
     --entryPoints.name.transport.lifeCycle.graceTimeOut=42
@@ -228,6 +233,32 @@ If both TCP and UDP are wanted for the same port, two entryPoints definitions ar
 
     Full details for how to specify `address` can be found in [net.Listen](https://golang.org/pkg/net/#Listen) (and [net.Dial](https://golang.org/pkg/net/#Dial)) of the doc for go.
 
+### HTTP/2
+
+#### `maxConcurrentStreams`
+
+_Optional, Default=250_
+
+`maxConcurrentStreams` specifies the number of concurrent streams per connection that each client is allowed to initiate.
+The `maxConcurrentStreams` value must be greater than zero.
+
+```yaml tab="File (YAML)"
+entryPoints:
+  foo:
+    http2:
+      maxConcurrentStreams: 250
+```
+
+```toml tab="File (TOML)"
+[entryPoints.foo]
+  [entryPoints.foo.http2]
+    maxConcurrentStreams = 250
+```
+
+```bash tab="CLI"
+--entryPoints.name.http2.maxConcurrentStreams=250
+```
+
 ### HTTP/3
 
 #### `http3`

docs/content/routing/providers/consul-catalog.md

@@ -8,7 +8,7 @@ description: "Learn how to use Consul Catalog as a provider for routing configur
 A Story of Tags, Services & Instances
 {: .subtitle }
 
-![Rancher](../../assets/img/providers/consul.png)
+![Consul Catalog](../../assets/img/providers/consul.png)
 
 Attach tags to your services and let Traefik do the rest!
 

docs/content/routing/providers/kubernetes-crd.md

@@ -48,7 +48,7 @@ The Kubernetes Ingress Controller, The Custom Resource Way.
           serviceAccountName: traefik-ingress-controller
           containers:
             - name: traefik
-              image: traefik:v2.7
+              image: traefik:v2.8
               args:
                 - --log.level=DEBUG
                 - --api
@@ -1619,22 +1619,24 @@ or referencing TLS stores in the [`IngressRoute`](#kind-ingressroute) / [`Ingres
     For the time being, please only configure one TLSStore named default.
 
 !!! info "TLSStore Attributes"
-   
     ```yaml tab="TLSStore"
     apiVersion: traefik.containo.us/v1alpha1
     kind: TLSStore
     metadata:
       name: default
       namespace: default
-    
     spec:
-      defaultCertificate:
-        secretName: my-secret                      # [1]
+      certificates:                            # [1]
+        - secretName: foo                      
+        - secretName: bar
+      defaultCertificate:                      # [2]
+        secretName: secret                     
     ```
 
-| Ref | Attribute    | Purpose                                                                                                                                                     |
-|-----|--------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------|
-| [1] | `secretName` | The name of the referenced Kubernetes [Secret](https://kubernetes.io/docs/concepts/configuration/secret/) that holds the default certificate for the store. |
+| Ref | Attribute            | Purpose                                                                                                                                                   |
+|-----|----------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------|
+| [1] | `certificates`       | List of Kubernetes [Secrets](https://kubernetes.io/docs/concepts/configuration/secret/), each of them holding a key/certificate pair to add to the store. |
+| [2] | `defaultCertificate` | Name of a Kubernetes [Secret](https://kubernetes.io/docs/concepts/configuration/secret/) that holds the default key/certificate pair for the store.       |
 
 ??? example "Declaring and referencing a TLSStore"
    

docs/content/routing/providers/kubernetes-ingress.md

@@ -146,7 +146,7 @@ which in turn will create the resulting routers, services, handlers, etc.
           serviceAccountName: traefik-ingress-controller
           containers:
             - name: traefik
-              image: traefik:v2.7
+              image: traefik:v2.8
               args:
                 - --entrypoints.web.address=:80
                 - --providers.kubernetesingress
@@ -537,7 +537,7 @@ This way, any Ingress attached to this Entrypoint will have TLS termination by d
           serviceAccountName: traefik-ingress-controller
           containers:
             - name: traefik
-              image: traefik:v2.7
+              image: traefik:v2.8
               args:
                 - --entrypoints.websecure.address=:443
                 - --entrypoints.websecure.http.tls
@@ -746,7 +746,7 @@ For more options, please refer to the available [annotations](#on-ingress).
           serviceAccountName: traefik-ingress-controller
           containers:
             - name: traefik
-              image: traefik:v2.7
+              image: traefik:v2.8
               args:
                 - --entrypoints.websecure.address=:443
                 - --providers.kubernetesingress

docs/content/routing/providers/nomad.md

@@ -0,0 +1,466 @@
+---
+title: "Traefik Nomad Service Discovery Routing"
+description: "Learn how to use Nomad Service Discovery as a provider for routing configurations in Traefik Proxy. Read the technical documentation."
+---
+
+# Traefik and Nomad Service Discovery
+
+A story of Tags, Services & Nomads
+{: .subtitle }
+
+![Nomad](../../assets/img/providers/nomad.png)
+
+Attach tags to your Nomad services and let Traefik do the rest!
+
+## Routing Configuration
+
+!!! info "tags"
+
+    - tags are case insensitive.
+    - The complete list of tags can be found [the reference page](../../reference/dynamic-configuration/nomad.md)
+
+### General
+
+Traefik creates, for each Nomad service, a corresponding Traefik [service](../services/index.md) and [router](../routers/index.md).
+
+The Traefik service automatically gets a server per instance in this Nomad service, and the router gets a default rule attached to it, based on the Nomad service name.
+
+### Routers
+
+To update the configuration of the Router automatically attached to the service, add tags starting with `traefik.routers.{name-of-your-choice}.` and followed by the option you want to change.
+
+For example, to change the rule, you could add the tag ```traefik.http.routers.my-service.rule=Host(`example.com`)```.
+
+??? info "`traefik.http.routers.<router_name>.rule`"
+
+    See [rule](../routers/index.md#rule) for more information.
+
+    ```yaml
+    traefik.http.routers.myrouter.rule=Host(`example.com`)
+    ```
+
+??? info "`traefik.http.routers.<router_name>.entrypoints`"
+
+    See [entry points](../routers/index.md#entrypoints) for more information.
+
+    ```yaml
+    traefik.http.routers.myrouter.entrypoints=web,websecure
+    ```
+
+??? info "`traefik.http.routers.<router_name>.middlewares`"
+
+    See [middlewares](../routers/index.md#middlewares) and [middlewares overview](../../middlewares/overview.md) for more information.
+
+    ```yaml
+    traefik.http.routers.myrouter.middlewares=auth,prefix,cb
+    ```
+
+??? info "`traefik.http.routers.<router_name>.service`"
+
+    See [rule](../routers/index.md#service) for more information.
+
+    ```yaml
+    traefik.http.routers.myrouter.service=myservice
+    ```
+
+??? info "`traefik.http.routers.<router_name>.tls`"
+
+    See [tls](../routers/index.md#tls) for more information.
+
+    ```yaml
+    traefik.http.routers.myrouter.tls=true
+    ```
+
+??? info "`traefik.http.routers.<router_name>.tls.certresolver`"
+
+    See [certResolver](../routers/index.md#certresolver) for more information.
+
+    ```yaml
+    traefik.http.routers.myrouter.tls.certresolver=myresolver
+    ```
+
+??? info "`traefik.http.routers.<router_name>.tls.domains[n].main`"
+
+    See [domains](../routers/index.md#domains) for more information.
+
+    ```yaml
+    traefik.http.routers.myrouter.tls.domains[0].main=example.org
+    ```
+
+??? info "`traefik.http.routers.<router_name>.tls.domains[n].sans`"
+
+    See [domains](../routers/index.md#domains) for more information.
+
+    ```yaml
+    traefik.http.routers.myrouter.tls.domains[0].sans=test.example.org,dev.example.org
+    ```
+
+??? info "`traefik.http.routers.<router_name>.tls.options`"
+
+    See [options](../routers/index.md#options) for more information.
+
+    ```yaml
+    traefik.http.routers.myrouter.tls.options=foobar
+    ```
+
+??? info "`traefik.http.routers.<router_name>.priority`"
+
+    See [priority](../routers/index.md#priority) for more information.
+
+    ```yaml
+    traefik.http.routers.myrouter.priority=42
+    ```
+
+### Services
+
+To update the configuration of the Service automatically attached to the service,
+add tags starting with `traefik.http.services.{name-of-your-choice}.`, followed by the option you want to change.
+
+For example, to change the `passHostHeader` behavior,
+you'd add the tag `traefik.http.services.{name-of-your-choice}.loadbalancer.passhostheader=false`.
+
+??? info "`traefik.http.services.<service_name>.loadbalancer.server.port`"
+
+    Registers a port.
+    Useful when the service exposes multiples ports.
+
+    ```yaml
+    traefik.http.services.myservice.loadbalancer.server.port=8080
+    ```
+
+??? info "`traefik.http.services.<service_name>.loadbalancer.server.scheme`"
+
+    Overrides the default scheme.
+
+    ```yaml
+    traefik.http.services.myservice.loadbalancer.server.scheme=http
+    ```
+
+??? info "`traefik.http.services.<service_name>.loadbalancer.serverstransport`"
+
+    Allows to reference a ServersTransport resource that is defined either with the File provider or the Kubernetes CRD one.
+    See [serverstransport](../services/index.md#serverstransport) for more information.
+
+    ```yaml
+    traefik.http.services.myservice.loadbalancer.serverstransport=foobar@file
+    ```
+
+??? info "`traefik.http.services.<service_name>.loadbalancer.passhostheader`"
+
+    See [pass Host header](../services/index.md#pass-host-header) for more information.
+
+    ```yaml
+    traefik.http.services.myservice.loadbalancer.passhostheader=true
+    ```
+
+??? info "`traefik.http.services.<service_name>.loadbalancer.healthcheck.headers.<header_name>`"
+
+    See [health check](../services/index.md#health-check) for more information.
+
+    ```yaml
+    traefik.http.services.myservice.loadbalancer.healthcheck.headers.X-Foo=foobar
+    ```
+
+??? info "`traefik.http.services.<service_name>.loadbalancer.healthcheck.hostname`"
+
+    See [health check](../services/index.md#health-check) for more information.
+
+    ```yaml
+    traefik.http.services.myservice.loadbalancer.healthcheck.hostname=example.org
+    ```
+
+??? info "`traefik.http.services.<service_name>.loadbalancer.healthcheck.interval`"
+
+    See [health check](../services/index.md#health-check) for more information.
+
+    ```yaml
+    traefik.http.services.myservice.loadbalancer.healthcheck.interval=10
+    ```
+
+??? info "`traefik.http.services.<service_name>.loadbalancer.healthcheck.path`"
+
+    See [health check](../services/index.md#health-check) for more information.
+
+    ```yaml
+    traefik.http.services.myservice.loadbalancer.healthcheck.path=/foo
+    ```
+
+??? info "`traefik.http.services.<service_name>.loadbalancer.healthcheck.port`"
+
+    See [health check](../services/index.md#health-check) for more information.
+
+    ```yaml
+    traefik.http.services.myservice.loadbalancer.healthcheck.port=42
+    ```
+
+??? info "`traefik.http.services.<service_name>.loadbalancer.healthcheck.scheme`"
+
+    See [health check](../services/index.md#health-check) for more information.
+
+    ```yaml
+    traefik.http.services.myservice.loadbalancer.healthcheck.scheme=http
+    ```
+
+??? info "`traefik.http.services.<service_name>.loadbalancer.healthcheck.timeout`"
+
+    See [health check](../services/index.md#health-check) for more information.
+
+    ```yaml
+    traefik.http.services.myservice.loadbalancer.healthcheck.timeout=10
+    ```
+
+??? info "`traefik.http.services.<service_name>.loadbalancer.healthcheck.followredirects`"
+
+    See [health check](../services/index.md#health-check) for more information.
+
+    ```yaml
+    traefik.http.services.myservice.loadbalancer.healthcheck.followredirects=true
+    ```
+
+??? info "`traefik.http.services.<service_name>.loadbalancer.sticky.cookie`"
+
+    See [sticky sessions](../services/index.md#sticky-sessions) for more information.
+
+    ```yaml
+    traefik.http.services.myservice.loadbalancer.sticky.cookie=true
+    ```
+
+??? info "`traefik.http.services.<service_name>.loadbalancer.sticky.cookie.httponly`"
+
+    See [sticky sessions](../services/index.md#sticky-sessions) for more information.
+
+    ```yaml
+    traefik.http.services.myservice.loadbalancer.sticky.cookie.httponly=true
+    ```
+
+??? info "`traefik.http.services.<service_name>.loadbalancer.sticky.cookie.name`"
+
+    See [sticky sessions](../services/index.md#sticky-sessions) for more information.
+
+    ```yaml
+    traefik.http.services.myservice.loadbalancer.sticky.cookie.name=foobar
+    ```
+
+??? info "`traefik.http.services.<service_name>.loadbalancer.sticky.cookie.secure`"
+
+    See [sticky sessions](../services/index.md#sticky-sessions) for more information.
+
+    ```yaml
+    traefik.http.services.myservice.loadbalancer.sticky.cookie.secure=true
+    ```
+
+??? info "`traefik.http.services.<service_name>.loadbalancer.sticky.cookie.samesite`"
+
+    See [sticky sessions](../services/index.md#sticky-sessions) for more information.
+
+    ```yaml
+    traefik.http.services.myservice.loadbalancer.sticky.cookie.samesite=none
+    ```
+
+??? info "`traefik.http.services.<service_name>.loadbalancer.responseforwarding.flushinterval`"
+
+    See [response forwarding](../services/index.md#response-forwarding) for more information.
+
+    ```yaml
+    traefik.http.services.myservice.loadbalancer.responseforwarding.flushinterval=10
+    ```
+
+### Middleware
+
+You can declare pieces of middleware using tags starting with `traefik.http.middlewares.{name-of-your-choice}.`, followed by the middleware type/options.
+
+For example, to declare a middleware [`redirectscheme`](../../middlewares/http/redirectscheme.md) named `my-redirect`, you'd write `traefik.http.middlewares.my-redirect.redirectscheme.scheme: https`.
+
+More information about available middlewares in the dedicated [middlewares section](../../middlewares/overview.md).
+
+??? example "Declaring and Referencing a Middleware"
+
+    ```yaml
+    # ...
+    # Declaring a middleware
+    traefik.http.middlewares.my-redirect.redirectscheme.scheme=https
+    # Referencing a middleware
+    traefik.http.routers.my-service.middlewares=my-redirect
+    ```
+
+!!! warning "Conflicts in Declaration"
+
+    If you declare multiple middleware with the same name but with different parameters, the middleware fails to be declared.
+
+### TCP
+
+You can declare TCP Routers and/or Services using tags.
+
+??? example "Declaring TCP Routers and Services"
+
+    ```yaml
+    traefik.tcp.routers.my-router.rule=HostSNI(`example.com`)
+    traefik.tcp.routers.my-router.tls=true
+    traefik.tcp.services.my-service.loadbalancer.server.port=4123
+    ```
+
+!!! warning "TCP and HTTP"
+
+    If you declare a TCP Router/Service, it will prevent Traefik from automatically creating an HTTP Router/Service (like it does by default if no TCP Router/Service is defined).
+    You can declare both a TCP Router/Service and an HTTP Router/Service for the same Nomad service (but you have to do so manually).
+
+#### TCP Routers
+
+??? info "`traefik.tcp.routers.<router_name>.entrypoints`"
+
+    See [entry points](../routers/index.md#entrypoints_1) for more information.
+
+    ```yaml
+    traefik.tcp.routers.mytcprouter.entrypoints=ep1,ep2
+    ```
+
+??? info "`traefik.tcp.routers.<router_name>.rule`"
+
+    See [rule](../routers/index.md#rule_1) for more information.
+
+    ```yaml
+    traefik.tcp.routers.mytcprouter.rule=HostSNI(`example.com`)
+    ```
+
+??? info "`traefik.tcp.routers.<router_name>.service`"
+
+    See [service](../routers/index.md#services) for more information.
+
+    ```yaml
+    traefik.tcp.routers.mytcprouter.service=myservice
+    ```
+
+??? info "`traefik.tcp.routers.<router_name>.tls`"
+
+    See [TLS](../routers/index.md#tls_1) for more information.
+
+    ```yaml
+    traefik.tcp.routers.mytcprouter.tls=true
+    ```
+
+??? info "`traefik.tcp.routers.<router_name>.tls.certresolver`"
+
+    See [certResolver](../routers/index.md#certresolver_1) for more information.
+
+    ```yaml
+    traefik.tcp.routers.mytcprouter.tls.certresolver=myresolver
+    ```
+
+??? info "`traefik.tcp.routers.<router_name>.tls.domains[n].main`"
+
+    See [domains](../routers/index.md#domains_1) for more information.
+
+    ```yaml
+    traefik.tcp.routers.mytcprouter.tls.domains[0].main=example.org
+    ```
+
+??? info "`traefik.tcp.routers.<router_name>.tls.domains[n].sans`"
+
+    See [domains](../routers/index.md#domains_1) for more information.
+
+    ```yaml
+    traefik.tcp.routers.mytcprouter.tls.domains[0].sans=test.example.org,dev.example.org
+    ```
+
+??? info "`traefik.tcp.routers.<router_name>.tls.options`"
+
+    See [options](../routers/index.md#options_1) for more information.
+
+    ```yaml
+    traefik.tcp.routers.mytcprouter.tls.options=myoptions
+    ```
+
+??? info "`traefik.tcp.routers.<router_name>.tls.passthrough`"
+
+    See [TLS](../routers/index.md#tls_1) for more information.
+
+    ```yaml
+    traefik.tcp.routers.mytcprouter.tls.passthrough=true
+    ```
+
+#### TCP Services
+
+??? info "`traefik.tcp.services.<service_name>.loadbalancer.server.port`"
+
+    Registers a port of the application.
+
+    ```yaml
+    traefik.tcp.services.mytcpservice.loadbalancer.server.port=423
+    ```
+
+??? info "`traefik.tcp.services.<service_name>.loadbalancer.terminationdelay`"
+
+    See [termination delay](../services/index.md#termination-delay) for more information.
+
+    ```yaml
+    traefik.tcp.services.mytcpservice.loadbalancer.terminationdelay=100
+    ```
+
+??? info "`traefik.tcp.services.<service_name>.loadbalancer.proxyprotocol.version`"
+
+    See [PROXY protocol](../services/index.md#proxy-protocol) for more information.
+
+    ```yaml
+    traefik.tcp.services.mytcpservice.loadbalancer.proxyprotocol.version=1
+    ```
+
+### UDP
+
+You can declare UDP Routers and/or Services using tags.
+
+??? example "Declaring UDP Routers and Services"
+
+    ```yaml
+    traefik.udp.routers.my-router.entrypoints=udp
+    traefik.udp.services.my-service.loadbalancer.server.port=4123
+    ```
+
+!!! warning "UDP and HTTP"
+
+    If you declare a UDP Router/Service, it will prevent Traefik from automatically creating an HTTP Router/Service (like it does by default if no UDP Router/Service is defined).
+    You can declare both a UDP Router/Service and an HTTP Router/Service for the same Nomad service (but you have to do so manually).
+
+#### UDP Routers
+
+??? info "`traefik.udp.routers.<router_name>.entrypoints`"
+
+    See [entry points](../routers/index.md#entrypoints_2) for more information.
+
+    ```yaml
+    traefik.udp.routers.myudprouter.entrypoints=ep1,ep2
+    ```
+
+??? info "`traefik.udp.routers.<router_name>.service`"
+
+    See [service](../routers/index.md#services_1) for more information.
+
+    ```yaml
+    traefik.udp.routers.myudprouter.service=myservice
+    ```
+
+#### UDP Services
+
+??? info "`traefik.udp.services.<service_name>.loadbalancer.server.port`"
+
+    Registers a port of the application.
+
+    ```yaml
+    traefik.udp.services.myudpservice.loadbalancer.server.port=423
+    ```
+
+### Specific Provider Options
+
+#### `traefik.enable`
+
+```yaml
+traefik.enable=true
+```
+
+You can tell Traefik to consider (or not) the service by setting `traefik.enable` to true or false.
+
+This option overrides the value of `exposedByDefault`.
+
+#### Port Lookup
+
+Traefik is capable of detecting the port to use, by following the default Nomad Service Discovery flow.
+That means, if you just expose lets say port `:1337` on the Nomad job, traefik will pick up this port and use it.

docs/content/user-guides/crd-acme/03-deployments.yml

@@ -26,7 +26,7 @@ spec:
       serviceAccountName: traefik-ingress-controller
       containers:
         - name: traefik
-          image: traefik:v2.7
+          image: traefik:v2.8
           args:
             - --api.insecure
             - --accesslog

docs/content/user-guides/crd-acme/index.md

@@ -49,10 +49,10 @@ and the RBAC authorization resources which will be referenced through the `servi
 
 ```bash
 # Install Traefik Resource Definitions:
-kubectl apply -f https://raw.githubusercontent.com/traefik/traefik/v2.7/docs/content/reference/dynamic-configuration/kubernetes-crd-definition-v1.yml
+kubectl apply -f https://raw.githubusercontent.com/traefik/traefik/v2.8/docs/content/reference/dynamic-configuration/kubernetes-crd-definition-v1.yml
 
 # Install RBAC for Traefik:
-kubectl apply -f https://raw.githubusercontent.com/traefik/traefik/v2.7/docs/content/reference/dynamic-configuration/kubernetes-crd-rbac.yml
+kubectl apply -f https://raw.githubusercontent.com/traefik/traefik/v2.8/docs/content/reference/dynamic-configuration/kubernetes-crd-rbac.yml
 ```
 
 ### Services
@@ -60,7 +60,7 @@ kubectl apply -f https://raw.githubusercontent.com/traefik/traefik/v2.7/docs/con
 Then, the services. One for Traefik itself, and one for the app it routes for, i.e. in this case our demo HTTP server: [whoami](https://github.com/traefik/whoami).
 
 ```bash
-kubectl apply -f https://raw.githubusercontent.com/traefik/traefik/v2.7/docs/content/user-guides/crd-acme/02-services.yml
+kubectl apply -f https://raw.githubusercontent.com/traefik/traefik/v2.8/docs/content/user-guides/crd-acme/02-services.yml
 ```
 
 ```yaml
@@ -73,7 +73,7 @@ Next, the deployments, i.e. the actual pods behind the services.
 Again, one pod for Traefik, and one for the whoami app.
 
 ```bash
-kubectl apply -f https://raw.githubusercontent.com/traefik/traefik/v2.7/docs/content/user-guides/crd-acme/03-deployments.yml
+kubectl apply -f https://raw.githubusercontent.com/traefik/traefik/v2.8/docs/content/user-guides/crd-acme/03-deployments.yml
 ```
 
 ```yaml
@@ -100,7 +100,7 @@ Look it up.
 We can now finally apply the actual ingressRoutes, with:
 
 ```bash
-kubectl apply -f https://raw.githubusercontent.com/traefik/traefik/v2.7/docs/content/user-guides/crd-acme/04-ingressroutes.yml
+kubectl apply -f https://raw.githubusercontent.com/traefik/traefik/v2.8/docs/content/user-guides/crd-acme/04-ingressroutes.yml
 ```
 
 ```yaml
@@ -126,7 +126,7 @@ Nowadays, TLS v1.0 and v1.1 are deprecated.
 In order to force TLS v1.2 or later on all your IngressRoute, you can define the `default` TLSOption:
 
 ```bash
-kubectl apply -f https://raw.githubusercontent.com/traefik/traefik/v2.7/docs/content/user-guides/crd-acme/05-tlsoption.yml
+kubectl apply -f https://raw.githubusercontent.com/traefik/traefik/v2.8/docs/content/user-guides/crd-acme/05-tlsoption.yml
 ```
 
 ```yaml

docs/content/user-guides/crd-acme/k3s.yml

@@ -26,5 +26,5 @@ node:
     - K3S_CLUSTER_SECRET=somethingtotallyrandom
   volumes:
     # this is where you would place a alternative traefik image (saved as a .tar file with
-    # 'docker save'), if you want to use it, instead of the traefik:v2.7 image.
+    # 'docker save'), if you want to use it, instead of the traefik:v2.8 image.
     - /somewhere/on/your/host/custom-image:/var/lib/rancher/k3s/agent/images

docs/content/user-guides/docker-compose/acme-dns/docker-compose.yml

@@ -3,7 +3,7 @@ version: "3.3"
 services:
 
   traefik:
-    image: "traefik:v2.7"
+    image: "traefik:v2.8"
     container_name: "traefik"
     command:
       #- "--log.level=DEBUG"

docs/content/user-guides/docker-compose/acme-dns/docker-compose_secrets.yml

@@ -13,7 +13,7 @@ secrets:
 services:
 
   traefik:
-    image: "traefik:v2.7"
+    image: "traefik:v2.8"
     container_name: "traefik"
     command:
       #- "--log.level=DEBUG"

docs/content/user-guides/docker-compose/acme-http/docker-compose.yml

@@ -3,7 +3,7 @@ version: "3.3"
 services:
 
   traefik:
-    image: "traefik:v2.7"
+    image: "traefik:v2.8"
     container_name: "traefik"
     command:
       #- "--log.level=DEBUG"

docs/content/user-guides/docker-compose/acme-tls/docker-compose.yml

@@ -3,7 +3,7 @@ version: "3.3"
 services:
 
   traefik:
-    image: "traefik:v2.7"
+    image: "traefik:v2.8"
     container_name: "traefik"
     command:
       #- "--log.level=DEBUG"

docs/content/user-guides/docker-compose/basic-example/docker-compose.yml

@@ -3,7 +3,7 @@ version: "3.3"
 services:
 
   traefik:
-    image: "traefik:v2.7"
+    image: "traefik:v2.8"
     container_name: "traefik"
     command:
       #- "--log.level=DEBUG"

docs/mkdocs.yml

@@ -77,6 +77,7 @@ nav:
       - 'Kubernetes Ingress': 'providers/kubernetes-ingress.md'
       - 'Kubernetes Gateway API': 'providers/kubernetes-gateway.md'
       - 'Consul Catalog': 'providers/consul-catalog.md'
+      - 'Nomad': 'providers/nomad.md'
       - 'ECS': 'providers/ecs.md'
       - 'Marathon': 'providers/marathon.md'
       - 'Rancher': 'providers/rancher.md'
@@ -97,6 +98,7 @@ nav:
           - 'Kubernetes Ingress': 'routing/providers/kubernetes-ingress.md'
           - 'Kubernetes Gateway API': 'routing/providers/kubernetes-gateway.md'
           - 'Consul Catalog': 'routing/providers/consul-catalog.md'
+          - 'Nomad': 'routing/providers/nomad.md'
           - 'ECS': 'routing/providers/ecs.md'
           - 'Marathon': 'routing/providers/marathon.md'
           - 'Rancher': 'routing/providers/rancher.md'
@@ -195,6 +197,7 @@ nav:
         - 'Kubernetes CRD': 'reference/dynamic-configuration/kubernetes-crd.md'
         - 'Kubernetes Gateway API': 'reference/dynamic-configuration/kubernetes-gateway.md'
         - 'Consul Catalog': 'reference/dynamic-configuration/consul-catalog.md'
+        - 'Nomad': "reference/dynamic-configuration/nomad.md"
         - 'ECS': 'reference/dynamic-configuration/ecs.md'
         - 'KV': 'reference/dynamic-configuration/kv.md'
         - 'Marathon': 'reference/dynamic-configuration/marathon.md'

go.mod

@@ -31,17 +31,18 @@ require (
 	github.com/hashicorp/go-hclog v0.16.2
 	github.com/hashicorp/go-multierror v1.1.1
 	github.com/hashicorp/go-version v1.3.0
+	github.com/hashicorp/nomad/api v0.0.0-20220506174431-b5665129cd1f
 	github.com/influxdata/influxdb-client-go/v2 v2.7.0
 	github.com/influxdata/influxdb1-client v0.0.0-20191209144304-8bf82d3c094d
 	github.com/instana/go-sensor v1.38.3
 	github.com/klauspost/compress v1.14.2
 	github.com/kvtools/valkeyrie v0.4.0
-	github.com/lucas-clemente/quic-go v0.25.0
+	github.com/lucas-clemente/quic-go v0.27.0
 	github.com/mailgun/ttlmap v0.0.0-20170619185759-c1c17f74874f
 	github.com/miekg/dns v1.1.47
 	github.com/mitchellh/copystructure v1.0.0
 	github.com/mitchellh/hashstructure v1.0.0
-	github.com/mitchellh/mapstructure v1.4.2
+	github.com/mitchellh/mapstructure v1.4.3
 	github.com/opentracing/opentracing-go v1.2.0
 	github.com/openzipkin-contrib/zipkin-go-opentracing v0.4.5
 	github.com/openzipkin/zipkin-go v0.2.2
@@ -180,6 +181,7 @@ require (
 	github.com/grpc-ecosystem/go-grpc-middleware v1.2.0 // indirect
 	github.com/grpc-ecosystem/grpc-opentracing v0.0.0-20180507213350-8e809c8a8645 // indirect
 	github.com/hashicorp/consul/sdk v0.8.0 // indirect
+	github.com/hashicorp/cronexpr v1.1.1 // indirect
 	github.com/hashicorp/errwrap v1.1.0 // indirect
 	github.com/hashicorp/go-cleanhttp v0.5.2 // indirect
 	github.com/hashicorp/go-immutable-radix v1.3.1 // indirect
@@ -224,9 +226,9 @@ require (
 	github.com/mailgun/timetools v0.0.0-20141028012446-7e6055773c51 // indirect
 	github.com/mailru/easyjson v0.7.7 // indirect
 	github.com/marten-seemann/qpack v0.2.1 // indirect
-	github.com/marten-seemann/qtls-go1-16 v0.1.4 // indirect
-	github.com/marten-seemann/qtls-go1-17 v0.1.0 // indirect
-	github.com/marten-seemann/qtls-go1-18 v0.1.0-beta.1 // indirect
+	github.com/marten-seemann/qtls-go1-16 v0.1.5 // indirect
+	github.com/marten-seemann/qtls-go1-17 v0.1.1 // indirect
+	github.com/marten-seemann/qtls-go1-18 v0.1.1 // indirect
 	github.com/mattn/go-colorable v0.1.11 // indirect
 	github.com/mattn/go-isatty v0.0.14 // indirect
 	github.com/mattn/go-shellwords v1.0.12 // indirect
@@ -235,7 +237,7 @@ require (
 	github.com/miekg/pkcs11 v1.0.3 // indirect
 	github.com/mimuret/golang-iij-dpf v0.7.1 // indirect
 	github.com/mitchellh/go-homedir v1.1.0 // indirect
-	github.com/mitchellh/go-testing-interface v1.14.0 // indirect
+	github.com/mitchellh/go-testing-interface v1.14.1 // indirect
 	github.com/mitchellh/reflectwalk v1.0.1 // indirect
 	github.com/moby/buildkit v0.8.2-0.20210401015549-df49b648c8bf // indirect
 	github.com/moby/locker v1.0.1 // indirect

go.sum

@@ -975,6 +975,8 @@ github.com/hashicorp/consul/sdk v0.3.0/go.mod h1:VKf9jXwCTEY1QZP2MOLRhb5i/I/ssyN
 github.com/hashicorp/consul/sdk v0.7.0/go.mod h1:fY08Y9z5SvJqevyZNy6WWPXiG3KwBPAvlcdx16zZ0fM=
 github.com/hashicorp/consul/sdk v0.8.0 h1:OJtKBtEjboEZvG6AOUdh4Z1Zbyu0WcxQ0qatRrZHTVU=
 github.com/hashicorp/consul/sdk v0.8.0/go.mod h1:GBvyrGALthsZObzUGsfgHZQDXjg4lOjagTIwIR1vPms=
+github.com/hashicorp/cronexpr v1.1.1 h1:NJZDd87hGXjoZBdvyCF9mX4DCq5Wy7+A/w+A7q0wn6c=
+github.com/hashicorp/cronexpr v1.1.1/go.mod h1:P4wA0KBl9C5q2hABiMO7cp6jcIg96CDh1Efb3g1PWA4=
 github.com/hashicorp/errwrap v0.0.0-20141028054710-7554cd9344ce/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
 github.com/hashicorp/errwrap v1.0.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
 github.com/hashicorp/errwrap v1.1.0 h1:OxrOeh75EUXMY8TBjag2fzXGZ40LB6IKw45YeGUDY2I=
@@ -1055,6 +1057,8 @@ github.com/hashicorp/memberlist v0.2.4/go.mod h1:MS2lj3INKhZjWNqd3N0m3J+Jxf3DAOn
 github.com/hashicorp/memberlist v0.3.0 h1:8+567mCcFDnS5ADl7lrpxPMWiFCElyUEeW0gtj34fMA=
 github.com/hashicorp/memberlist v0.3.0/go.mod h1:MS2lj3INKhZjWNqd3N0m3J+Jxf3DAOnAH9VT3Sh9MUE=
 github.com/hashicorp/net-rpc-msgpackrpc v0.0.0-20151116020338-a14192a58a69/go.mod h1:/z+jUGRBlwVpUZfjute9jWaF6/HuhjuFQuL1YXzVD1Q=
+github.com/hashicorp/nomad/api v0.0.0-20220506174431-b5665129cd1f h1:jSBbBJcPca465gK6XfwdXRQnFCd63e0oJmqllZTsawI=
+github.com/hashicorp/nomad/api v0.0.0-20220506174431-b5665129cd1f/go.mod h1:b/AoT79m3PEpb6tKCFKva/M+q1rKJNUk5mdu1S8DymM=
 github.com/hashicorp/raft v1.1.1/go.mod h1:vPAJM8Asw6u8LxC3eJCUZmRP/E4QmUGE1R7g7k8sG/8=
 github.com/hashicorp/raft v1.2.0/go.mod h1:vPAJM8Asw6u8LxC3eJCUZmRP/E4QmUGE1R7g7k8sG/8=
 github.com/hashicorp/raft v1.3.2 h1:j2tqHqFnDdWCepLxzuo3b6WzS2krIweBrvEoqBbWMTo=
@@ -1260,6 +1264,8 @@ github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515/go.mod h1:+0opPa2QZZtGFB
 github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
 github.com/kr/pretty v0.2.0/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
 github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfnI=
+github.com/kr/pretty v0.3.0 h1:WgNl7dwNpEZ6jJ9k1snq4pZsg7DOEN8hP9Xw0Tsjwk0=
+github.com/kr/pretty v0.3.0/go.mod h1:640gp4NfQd8pI5XOwp5fnNeVWj67G7CFk/SaSQn7NBk=
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/pty v1.1.3/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/pty v1.1.4/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
@@ -1306,8 +1312,8 @@ github.com/liquidweb/liquidweb-go v1.6.3/go.mod h1:SuXXp+thr28LnjEw18AYtWwIbWMHS
 github.com/lithammer/dedent v1.1.0/go.mod h1:jrXYCQtgg0nJiN+StA2KgR7w6CiQNv9Fd/Z9BP0jIOc=
 github.com/looplab/fsm v0.1.0 h1:Qte7Zdn/5hBNbXzP7yxVU4OIFHWXBovyTT2LaBTyC20=
 github.com/looplab/fsm v0.1.0/go.mod h1:m2VaOfDHxqXBBMgc26m6yUOwkFn8H2AlJDE+jd/uafI=
-github.com/lucas-clemente/quic-go v0.25.0 h1:K+X9Gvd7JXsOHtU0N2icZ2Nw3rx82uBej3mP4CLgibc=
-github.com/lucas-clemente/quic-go v0.25.0/go.mod h1:YtzP8bxRVCBlO77yRanE264+fY/T2U9ZlW1AaHOsMOg=
+github.com/lucas-clemente/quic-go v0.27.0 h1:v6WY87q9zD4dKASbG8hy/LpzAVNzEQzw8sEIeloJsc4=
+github.com/lucas-clemente/quic-go v0.27.0/go.mod h1:AzgQoPda7N+3IqMMMkywBKggIFo2KT6pfnlrQ2QieeI=
 github.com/lunixbochs/vtclean v1.0.0/go.mod h1:pHhQNgMf3btfWnGBVipUOjRYhoOsdGqdm/+2c2E2WMI=
 github.com/lyft/protoc-gen-validate v0.0.13/go.mod h1:XbGvPuh87YZc5TdIa2/I4pLk0QoUACkjt2znoq26NVQ=
 github.com/magiconair/properties v1.8.0/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=
@@ -1335,13 +1341,12 @@ github.com/markbates/safe v1.0.1/go.mod h1:nAqgmRi7cY2nqMc92/bSEeQA+R4OheNU2T1kN
 github.com/marstr/guid v1.1.0/go.mod h1:74gB1z2wpxxInTG6yaqA7KrtM0NZ+RbrcqDvYHefzho=
 github.com/marten-seemann/qpack v0.2.1 h1:jvTsT/HpCn2UZJdP+UUB53FfUUgeOyG5K1ns0OJOGVs=
 github.com/marten-seemann/qpack v0.2.1/go.mod h1:F7Gl5L1jIgN1D11ucXefiuJS9UMVP2opoCp2jDKb7wc=
-github.com/marten-seemann/qtls-go1-15 v0.1.4/go.mod h1:GyFwywLKkRt+6mfU99csTEY1joMZz5vmB1WNZH3P81I=
-github.com/marten-seemann/qtls-go1-16 v0.1.4 h1:xbHbOGGhrenVtII6Co8akhLEdrawwB2iHl5yhJRpnco=
-github.com/marten-seemann/qtls-go1-16 v0.1.4/go.mod h1:gNpI2Ol+lRS3WwSOtIUUtRwZEQMXjYK+dQSBFbethAk=
-github.com/marten-seemann/qtls-go1-17 v0.1.0 h1:P9ggrs5xtwiqXv/FHNwntmuLMNq3KaSIG93AtAZ48xk=
-github.com/marten-seemann/qtls-go1-17 v0.1.0/go.mod h1:fz4HIxByo+LlWcreM4CZOYNuz3taBQ8rN2X6FqvaWo8=
-github.com/marten-seemann/qtls-go1-18 v0.1.0-beta.1 h1:EnzzN9fPUkUck/1CuY1FlzBaIYMoiBsdwTNmNGkwUUM=
-github.com/marten-seemann/qtls-go1-18 v0.1.0-beta.1/go.mod h1:PUhIQk19LoFt2174H4+an8TYvWOGjb/hHwphBeaDHwI=
+github.com/marten-seemann/qtls-go1-16 v0.1.5 h1:o9JrYPPco/Nukd/HpOHMHZoBDXQqoNtUCmny98/1uqQ=
+github.com/marten-seemann/qtls-go1-16 v0.1.5/go.mod h1:gNpI2Ol+lRS3WwSOtIUUtRwZEQMXjYK+dQSBFbethAk=
+github.com/marten-seemann/qtls-go1-17 v0.1.1 h1:DQjHPq+aOzUeh9/lixAGunn6rIOQyWChPSI4+hgW7jc=
+github.com/marten-seemann/qtls-go1-17 v0.1.1/go.mod h1:C2ekUKcDdz9SDWxec1N/MvcXBpaX9l3Nx67XaR84L5s=
+github.com/marten-seemann/qtls-go1-18 v0.1.1 h1:qp7p7XXUFL7fpBvSS1sWD+uSqPvzNQK43DH+/qEkj0Y=
+github.com/marten-seemann/qtls-go1-18 v0.1.1/go.mod h1:mJttiymBAByA49mhlNZZGrH5u1uXYZJ+RW28Py7f4m4=
 github.com/matryer/moq v0.0.0-20190312154309-6cfb0558e1bd/go.mod h1:9ELz6aaclSIGnZBoaSLZ3NAl1VTufbOrXBPvtcy6WiQ=
 github.com/mattn/go-colorable v0.0.9/go.mod h1:9vuHe8Xs5qXnSaW/c/ABM9alt+Vo+STaOChaDxuIBZU=
 github.com/mattn/go-colorable v0.1.1/go.mod h1:FuOcm+DKB9mbwrcAfNl7/TZVBZ6rcnceauSikq3lYCQ=
@@ -1403,8 +1408,9 @@ github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG
 github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
 github.com/mitchellh/go-testing-interface v0.0.0-20171004221916-a61a99592b77/go.mod h1:kRemZodwjscx+RGhAo8eIhFbs2+BFgRtFPeD/KE+zxI=
 github.com/mitchellh/go-testing-interface v1.0.0/go.mod h1:kRemZodwjscx+RGhAo8eIhFbs2+BFgRtFPeD/KE+zxI=
-github.com/mitchellh/go-testing-interface v1.14.0 h1:/x0XQ6h+3U3nAyk1yx+bHPURrKa9sVVvYbuqZ7pIAtI=
 github.com/mitchellh/go-testing-interface v1.14.0/go.mod h1:gfgS7OtZj6MA4U1UrDRp04twqAjfvlZyCfX3sDjEym8=
+github.com/mitchellh/go-testing-interface v1.14.1 h1:jrgshOhYAUVNMAJiKbEu7EqAwgJJ2JqpQmpLJOu07cU=
+github.com/mitchellh/go-testing-interface v1.14.1/go.mod h1:gfgS7OtZj6MA4U1UrDRp04twqAjfvlZyCfX3sDjEym8=
 github.com/mitchellh/go-vnc v0.0.0-20150629162542-723ed9867aed/go.mod h1:3rdaFaCv4AyBgu5ALFM0+tSuHrBh6v692nyQe3ikrq0=
 github.com/mitchellh/go-wordwrap v0.0.0-20150314170334-ad45545899c7/go.mod h1:ZXFpozHsX6DPmq2I0TCekCxypsnAUbP2oI0UX1GXzOo=
 github.com/mitchellh/go-wordwrap v1.0.0/go.mod h1:ZXFpozHsX6DPmq2I0TCekCxypsnAUbP2oI0UX1GXzOo=
@@ -1419,8 +1425,9 @@ github.com/mitchellh/mapstructure v1.3.2/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RR
 github.com/mitchellh/mapstructure v1.3.3/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
 github.com/mitchellh/mapstructure v1.4.1-0.20210112042008-8ebf2d61a8b4/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
 github.com/mitchellh/mapstructure v1.4.1/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
-github.com/mitchellh/mapstructure v1.4.2 h1:6h7AQ0yhTcIsmFmnAwQls75jp2Gzs4iB8W7pjMO+rqo=
 github.com/mitchellh/mapstructure v1.4.2/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
+github.com/mitchellh/mapstructure v1.4.3 h1:OVowDSCllw/YjdLkam3/sm7wEtOy59d8ndGgCcyj8cs=
+github.com/mitchellh/mapstructure v1.4.3/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
 github.com/mitchellh/osext v0.0.0-20151018003038-5e2d6d41470f/go.mod h1:OkQIRizQZAeMln+1tSwduZz7+Af5oFlKirV/MSYes2A=
 github.com/mitchellh/pointerstructure v1.0.0 h1:ATSdz4NWrmWPOF1CeCBU4sMCno2hgqdbSrRPFWQSVZI=
 github.com/mitchellh/pointerstructure v1.0.0/go.mod h1:k4XwG94++jLVsSiTxo7qdIfXA9pj9EAeo0QsNNJOLZ8=
@@ -1701,6 +1708,8 @@ github.com/rogpeppe/go-charset v0.0.0-20180617210344-2471d30d28b4/go.mod h1:qgYe
 github.com/rogpeppe/go-internal v1.1.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
 github.com/rogpeppe/go-internal v1.2.2/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
 github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
+github.com/rogpeppe/go-internal v1.6.1 h1:/FiVV8dS/e+YqF2JvO3yXRFbBLTIuSDkuC7aBOAvL+k=
+github.com/rogpeppe/go-internal v1.6.1/go.mod h1:xXDCJY+GAPziupqXw64V24skbSoqbTEfhy4qGm1nDQc=
 github.com/rs/xid v1.2.1/go.mod h1:+uKXf+4Djp6Md1KODXJxgGQPKngRmWyn10oCKFzNHOQ=
 github.com/rs/zerolog v1.4.0/go.mod h1:YbFCdg8HfsridGWAh22vktObvhZbQsZXe4/zB0OKkWU=
 github.com/rs/zerolog v1.13.0/go.mod h1:YbFCdg8HfsridGWAh22vktObvhZbQsZXe4/zB0OKkWU=

integration/fixtures/k8s/01-traefik-crd.yml

@@ -39,7 +39,7 @@ spec:
               entryPoints:
                 description: 'EntryPoints defines the list of entry point names to
                   bind to. Entry points have to be configured in the static configuration.
-                  More info: https://doc.traefik.io/traefik/v2.7/routing/entrypoints/
+                  More info: https://doc.traefik.io/traefik/v2.8/routing/entrypoints/
                   Default: all.'
                 items:
                   type: string
@@ -56,11 +56,11 @@ spec:
                       - Rule
                       type: string
                     match:
-                      description: 'Match defines the router''s rule. More info: https://doc.traefik.io/traefik/v2.7/routing/routers/#rule'
+                      description: 'Match defines the router''s rule. More info: https://doc.traefik.io/traefik/v2.8/routing/routers/#rule'
                       type: string
                     middlewares:
                       description: 'Middlewares defines the list of references to
-                        Middleware resources. More info: https://doc.traefik.io/traefik/v2.7/routing/providers/kubernetes-crd/#kind-middleware'
+                        Middleware resources. More info: https://doc.traefik.io/traefik/v2.8/routing/providers/kubernetes-crd/#kind-middleware'
                       items:
                         description: MiddlewareRef is a reference to a Middleware
                           resource.
@@ -79,7 +79,7 @@ spec:
                       type: array
                     priority:
                       description: 'Priority defines the router''s priority. More
-                        info: https://doc.traefik.io/traefik/v2.7/routing/routers/#priority'
+                        info: https://doc.traefik.io/traefik/v2.8/routing/routers/#priority'
                       type: integer
                     services:
                       description: Services defines the list of Service. It can contain
@@ -145,7 +145,7 @@ spec:
                             type: string
                           sticky:
                             description: 'Sticky defines the sticky sessions configuration.
-                              More info: https://doc.traefik.io/traefik/v2.7/routing/services/#sticky-sessions'
+                              More info: https://doc.traefik.io/traefik/v2.8/routing/services/#sticky-sessions'
                             properties:
                               cookie:
                                 description: Cookie defines the sticky cookie configuration.
@@ -190,16 +190,16 @@ spec:
                   type: object
                 type: array
               tls:
-                description: 'TLS defines the TLS configuration. More info: https://doc.traefik.io/traefik/v2.7/routing/routers/#tls'
+                description: 'TLS defines the TLS configuration. More info: https://doc.traefik.io/traefik/v2.8/routing/routers/#tls'
                 properties:
                   certResolver:
                     description: 'CertResolver defines the name of the certificate
                       resolver to use. Cert resolvers have to be configured in the
-                      static configuration. More info: https://doc.traefik.io/traefik/v2.7/https/acme/#certificate-resolvers'
+                      static configuration. More info: https://doc.traefik.io/traefik/v2.8/https/acme/#certificate-resolvers'
                     type: string
                   domains:
                     description: 'Domains defines the list of domains that will be
-                      used to issue certificates. More info: https://doc.traefik.io/traefik/v2.7/routing/routers/#domains'
+                      used to issue certificates. More info: https://doc.traefik.io/traefik/v2.8/routing/routers/#domains'
                     items:
                       description: Domain holds a domain name with SANs.
                       properties:
@@ -217,15 +217,15 @@ spec:
                   options:
                     description: 'Options defines the reference to a TLSOption, that
                       specifies the parameters of the TLS connection. If not defined,
-                      the `default` TLSOption is used. More info: https://doc.traefik.io/traefik/v2.7/https/tls/#tls-options'
+                      the `default` TLSOption is used. More info: https://doc.traefik.io/traefik/v2.8/https/tls/#tls-options'
                     properties:
                       name:
                         description: 'Name defines the name of the referenced TLSOption.
-                          More info: https://doc.traefik.io/traefik/v2.7/routing/providers/kubernetes-crd/#kind-tlsoption'
+                          More info: https://doc.traefik.io/traefik/v2.8/routing/providers/kubernetes-crd/#kind-tlsoption'
                         type: string
                       namespace:
                         description: 'Namespace defines the namespace of the referenced
-                          TLSOption. More info: https://doc.traefik.io/traefik/v2.7/routing/providers/kubernetes-crd/#kind-tlsoption'
+                          TLSOption. More info: https://doc.traefik.io/traefik/v2.8/routing/providers/kubernetes-crd/#kind-tlsoption'
                         type: string
                     required:
                     - name
@@ -241,11 +241,11 @@ spec:
                     properties:
                       name:
                         description: 'Name defines the name of the referenced TLSStore.
-                          More info: https://doc.traefik.io/traefik/v2.7/routing/providers/kubernetes-crd/#kind-tlsstore'
+                          More info: https://doc.traefik.io/traefik/v2.8/routing/providers/kubernetes-crd/#kind-tlsstore'
                         type: string
                       namespace:
                         description: 'Namespace defines the namespace of the referenced
-                          TLSStore. More info: https://doc.traefik.io/traefik/v2.7/routing/providers/kubernetes-crd/#kind-tlsstore'
+                          TLSStore. More info: https://doc.traefik.io/traefik/v2.8/routing/providers/kubernetes-crd/#kind-tlsstore'
                         type: string
                     required:
                     - name
@@ -307,7 +307,7 @@ spec:
               entryPoints:
                 description: 'EntryPoints defines the list of entry point names to
                   bind to. Entry points have to be configured in the static configuration.
-                  More info: https://doc.traefik.io/traefik/v2.7/routing/entrypoints/
+                  More info: https://doc.traefik.io/traefik/v2.8/routing/entrypoints/
                   Default: all.'
                 items:
                   type: string
@@ -318,7 +318,7 @@ spec:
                   description: RouteTCP holds the TCP route configuration.
                   properties:
                     match:
-                      description: 'Match defines the router''s rule. More info: https://doc.traefik.io/traefik/v2.7/routing/routers/#rule_1'
+                      description: 'Match defines the router''s rule. More info: https://doc.traefik.io/traefik/v2.8/routing/routers/#rule_1'
                       type: string
                     middlewares:
                       description: Middlewares defines the list of references to MiddlewareTCP
@@ -341,7 +341,7 @@ spec:
                       type: array
                     priority:
                       description: 'Priority defines the router''s priority. More
-                        info: https://doc.traefik.io/traefik/v2.7/routing/routers/#priority_1'
+                        info: https://doc.traefik.io/traefik/v2.8/routing/routers/#priority_1'
                       type: integer
                     services:
                       description: Services defines the list of TCP services.
@@ -366,7 +366,7 @@ spec:
                             x-kubernetes-int-or-string: true
                           proxyProtocol:
                             description: 'ProxyProtocol defines the PROXY protocol
-                              configuration. More info: https://doc.traefik.io/traefik/v2.7/routing/services/#proxy-protocol'
+                              configuration. More info: https://doc.traefik.io/traefik/v2.8/routing/services/#proxy-protocol'
                             properties:
                               version:
                                 description: Version defines the PROXY Protocol version
@@ -397,16 +397,16 @@ spec:
                 type: array
               tls:
                 description: 'TLS defines the TLS configuration on a layer 4 / TCP
-                  Route. More info: https://doc.traefik.io/traefik/v2.7/routing/routers/#tls_1'
+                  Route. More info: https://doc.traefik.io/traefik/v2.8/routing/routers/#tls_1'
                 properties:
                   certResolver:
                     description: 'CertResolver defines the name of the certificate
                       resolver to use. Cert resolvers have to be configured in the
-                      static configuration. More info: https://doc.traefik.io/traefik/v2.7/https/acme/#certificate-resolvers'
+                      static configuration. More info: https://doc.traefik.io/traefik/v2.8/https/acme/#certificate-resolvers'
                     type: string
                   domains:
                     description: 'Domains defines the list of domains that will be
-                      used to issue certificates. More info: https://doc.traefik.io/traefik/v2.7/routing/routers/#domains'
+                      used to issue certificates. More info: https://doc.traefik.io/traefik/v2.8/routing/routers/#domains'
                     items:
                       description: Domain holds a domain name with SANs.
                       properties:
@@ -424,7 +424,7 @@ spec:
                   options:
                     description: 'Options defines the reference to a TLSOption, that
                       specifies the parameters of the TLS connection. If not defined,
-                      the `default` TLSOption is used. More info: https://doc.traefik.io/traefik/v2.7/https/tls/#tls-options'
+                      the `default` TLSOption is used. More info: https://doc.traefik.io/traefik/v2.8/https/tls/#tls-options'
                     properties:
                       name:
                         description: Name defines the name of the referenced Traefik
@@ -518,7 +518,7 @@ spec:
               entryPoints:
                 description: 'EntryPoints defines the list of entry point names to
                   bind to. Entry points have to be configured in the static configuration.
-                  More info: https://doc.traefik.io/traefik/v2.7/routing/entrypoints/
+                  More info: https://doc.traefik.io/traefik/v2.8/routing/entrypoints/
                   Default: all.'
                 items:
                   type: string
@@ -597,7 +597,7 @@ spec:
     schema:
       openAPIV3Schema:
         description: 'Middleware is the CRD implementation of a Traefik Middleware.
-          More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/overview/'
+          More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/overview/'
         properties:
           apiVersion:
             description: 'APIVersion defines the versioned schema of this representation
@@ -617,7 +617,7 @@ spec:
               addPrefix:
                 description: 'AddPrefix holds the add prefix middleware configuration.
                   This middleware updates the path of a request before forwarding
-                  it. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/addprefix/'
+                  it. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/addprefix/'
                 properties:
                   prefix:
                     description: Prefix is the string to add before the current path
@@ -627,11 +627,11 @@ spec:
               basicAuth:
                 description: 'BasicAuth holds the basic auth middleware configuration.
                   This middleware restricts access to your services to known users.
-                  More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/basicauth/'
+                  More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/basicauth/'
                 properties:
                   headerField:
                     description: 'HeaderField defines a header field to store the
-                      authenticated user. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/basicauth/#headerfield'
+                      authenticated user. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/basicauth/#headerfield'
                     type: string
                   realm:
                     description: 'Realm allows the protected resources on a server
@@ -651,7 +651,7 @@ spec:
               buffering:
                 description: 'Buffering holds the buffering middleware configuration.
                   This middleware retries or limits the size of requests that can
-                  be forwarded to backends. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/buffering/#maxrequestbodybytes'
+                  be forwarded to backends. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/buffering/#maxrequestbodybytes'
                 properties:
                   maxRequestBodyBytes:
                     description: 'MaxRequestBodyBytes defines the maximum allowed
@@ -684,13 +684,13 @@ spec:
                   retryExpression:
                     description: 'RetryExpression defines the retry conditions. It
                       is a logical combination of functions with operators AND (&&)
-                      and OR (||). More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/buffering/#retryexpression'
+                      and OR (||). More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/buffering/#retryexpression'
                     type: string
                 type: object
               chain:
                 description: 'Chain holds the configuration of the chain middleware.
                   This middleware enables to define reusable combinations of other
-                  pieces of middleware. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/chain/'
+                  pieces of middleware. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/chain/'
                 properties:
                   middlewares:
                     description: Middlewares is the list of MiddlewareRef which composes
@@ -712,21 +712,39 @@ spec:
                     type: array
                 type: object
               circuitBreaker:
-                description: 'CircuitBreaker holds the circuit breaker middleware
-                  configuration. This middleware protects the system from stacking
-                  requests to unhealthy services, resulting in cascading failures.
-                  More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/circuitbreaker/'
+                description: CircuitBreaker holds the circuit breaker configuration.
                 properties:
+                  checkPeriod:
+                    anyOf:
+                    - type: integer
+                    - type: string
+                    description: CheckPeriod is the interval between successive checks
+                      of the circuit breaker condition (when in standby state).
+                    x-kubernetes-int-or-string: true
                   expression:
-                    description: Expression defines the expression that, once matched,
-                      opens the circuit breaker and applies the fallback mechanism
-                      instead of calling the services.
+                    description: Expression is the condition that triggers the tripped
+                      state.
                     type: string
+                  fallbackDuration:
+                    anyOf:
+                    - type: integer
+                    - type: string
+                    description: FallbackDuration is the duration for which the circuit
+                      breaker will wait before trying to recover (from a tripped state).
+                    x-kubernetes-int-or-string: true
+                  recoveryDuration:
+                    anyOf:
+                    - type: integer
+                    - type: string
+                    description: RecoveryDuration is the duration for which the circuit
+                      breaker will try to recover (as soon as it is in recovering
+                      state).
+                    x-kubernetes-int-or-string: true
                 type: object
               compress:
                 description: 'Compress holds the compress middleware configuration.
                   This middleware compresses responses before sending them to the
-                  client, using gzip compression. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/compress/'
+                  client, using gzip compression. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/compress/'
                 properties:
                   excludedContentTypes:
                     description: ExcludedContentTypes defines the list of content
@@ -760,11 +778,11 @@ spec:
               digestAuth:
                 description: 'DigestAuth holds the digest auth middleware configuration.
                   This middleware restricts access to your services to known users.
-                  More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/digestauth/'
+                  More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/digestauth/'
                 properties:
                   headerField:
                     description: 'HeaderField defines a header field to store the
-                      authenticated user. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/basicauth/#headerfield'
+                      authenticated user. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/basicauth/#headerfield'
                     type: string
                   realm:
                     description: 'Realm allows the protected resources on a server
@@ -783,7 +801,7 @@ spec:
               errors:
                 description: 'ErrorPage holds the custom error middleware configuration.
                   This middleware returns a custom page in lieu of the default, according
-                  to configured ranges of HTTP Status codes. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/errorpages/'
+                  to configured ranges of HTTP Status codes. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/errorpages/'
                 properties:
                   query:
                     description: Query defines the URL for the error page (hosted
@@ -792,7 +810,7 @@ spec:
                     type: string
                   service:
                     description: 'Service defines the reference to a Kubernetes Service
-                      that will serve the error page. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/errorpages/#service'
+                      that will serve the error page. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/errorpages/#service'
                     properties:
                       kind:
                         description: Kind defines the kind of the Service.
@@ -849,7 +867,7 @@ spec:
                         type: string
                       sticky:
                         description: 'Sticky defines the sticky sessions configuration.
-                          More info: https://doc.traefik.io/traefik/v2.7/routing/services/#sticky-sessions'
+                          More info: https://doc.traefik.io/traefik/v2.8/routing/services/#sticky-sessions'
                         properties:
                           cookie:
                             description: Cookie defines the sticky cookie configuration.
@@ -898,7 +916,7 @@ spec:
               forwardAuth:
                 description: 'ForwardAuth holds the forward auth middleware configuration.
                   This middleware delegates the request authentication to a Service.
-                  More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/forwardauth/'
+                  More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/forwardauth/'
                 properties:
                   address:
                     description: Address defines the authentication server address.
@@ -921,7 +939,7 @@ spec:
                     description: 'AuthResponseHeadersRegex defines the regex to match
                       headers to copy from the authentication server response and
                       set on forwarded request, after stripping all headers that match
-                      the regex. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/forwardauth/#authresponseheadersregex'
+                      the regex. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/forwardauth/#authresponseheadersregex'
                     type: string
                   tls:
                     description: TLS defines the configuration used to secure the
@@ -952,7 +970,7 @@ spec:
               headers:
                 description: 'Headers holds the headers middleware configuration.
                   This middleware manages the requests and responses headers. More
-                  info: https://doc.traefik.io/traefik/v2.7/middlewares/http/headers/#customrequestheaders'
+                  info: https://doc.traefik.io/traefik/v2.8/middlewares/http/headers/#customrequestheaders'
                 properties:
                   accessControlAllowCredentials:
                     description: AccessControlAllowCredentials defines whether the
@@ -1113,7 +1131,7 @@ spec:
               inFlightReq:
                 description: 'InFlightReq holds the in-flight request middleware configuration.
                   This middleware limits the number of requests being processed and
-                  served concurrently. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/inflightreq/'
+                  served concurrently. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/inflightreq/'
                 properties:
                   amount:
                     description: Amount defines the maximum amount of allowed simultaneous
@@ -1127,11 +1145,11 @@ spec:
                       group requests as originating from a common source. If several
                       strategies are defined at the same time, an error will be raised.
                       If none are set, the default is to use the requestHost. More
-                      info: https://doc.traefik.io/traefik/v2.7/middlewares/http/inflightreq/#sourcecriterion'
+                      info: https://doc.traefik.io/traefik/v2.8/middlewares/http/inflightreq/#sourcecriterion'
                     properties:
                       ipStrategy:
                         description: 'IPStrategy holds the IP strategy configuration
-                          used by Traefik to determine the client IP. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/ipwhitelist/#ipstrategy'
+                          used by Traefik to determine the client IP. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/ipwhitelist/#ipstrategy'
                         properties:
                           depth:
                             description: Depth tells Traefik to use the X-Forwarded-For
@@ -1159,11 +1177,11 @@ spec:
               ipWhiteList:
                 description: 'IPWhiteList holds the IP whitelist middleware configuration.
                   This middleware accepts / refuses requests based on the client IP.
-                  More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/ipwhitelist/'
+                  More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/ipwhitelist/'
                 properties:
                   ipStrategy:
                     description: 'IPStrategy holds the IP strategy configuration used
-                      by Traefik to determine the client IP. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/ipwhitelist/#ipstrategy'
+                      by Traefik to determine the client IP. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/ipwhitelist/#ipstrategy'
                     properties:
                       depth:
                         description: Depth tells Traefik to use the X-Forwarded-For
@@ -1187,7 +1205,7 @@ spec:
               passTLSClientCert:
                 description: 'PassTLSClientCert holds the pass TLS client cert middleware
                   configuration. This middleware adds the selected data from the passed
-                  client TLS certificate to a header. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/passtlsclientcert/'
+                  client TLS certificate to a header. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/passtlsclientcert/'
                 properties:
                   info:
                     description: Info selects the specific client certificate details
@@ -1294,7 +1312,7 @@ spec:
               rateLimit:
                 description: 'RateLimit holds the rate limit configuration. This middleware
                   ensures that services will receive a fair amount of requests, and
-                  allows one to define what fair is. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/ratelimit/'
+                  allows one to define what fair is. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/ratelimit/'
                 properties:
                   average:
                     description: Average is the maximum rate, by default in requests/s,
@@ -1327,7 +1345,7 @@ spec:
                     properties:
                       ipStrategy:
                         description: 'IPStrategy holds the IP strategy configuration
-                          used by Traefik to determine the client IP. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/ipwhitelist/#ipstrategy'
+                          used by Traefik to determine the client IP. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/ipwhitelist/#ipstrategy'
                         properties:
                           depth:
                             description: Depth tells Traefik to use the X-Forwarded-For
@@ -1355,7 +1373,7 @@ spec:
               redirectRegex:
                 description: 'RedirectRegex holds the redirect regex middleware configuration.
                   This middleware redirects a request using regex matching and replacement.
-                  More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/redirectregex/#regex'
+                  More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/redirectregex/#regex'
                 properties:
                   permanent:
                     description: Permanent defines whether the redirection is permanent
@@ -1373,7 +1391,7 @@ spec:
               redirectScheme:
                 description: 'RedirectScheme holds the redirect scheme middleware
                   configuration. This middleware redirects requests from a scheme/port
-                  to another. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/redirectscheme/'
+                  to another. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/redirectscheme/'
                 properties:
                   permanent:
                     description: Permanent defines whether the redirection is permanent
@@ -1389,7 +1407,7 @@ spec:
               replacePath:
                 description: 'ReplacePath holds the replace path middleware configuration.
                   This middleware replaces the path of the request URL and store the
-                  original path in an X-Replaced-Path header. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/replacepath/'
+                  original path in an X-Replaced-Path header. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/replacepath/'
                 properties:
                   path:
                     description: Path defines the path to use as replacement in the
@@ -1399,7 +1417,7 @@ spec:
               replacePathRegex:
                 description: 'ReplacePathRegex holds the replace path regex middleware
                   configuration. This middleware replaces the path of a URL using
-                  regex matching and replacement. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/replacepathregex/'
+                  regex matching and replacement. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/replacepathregex/'
                 properties:
                   regex:
                     description: Regex defines the regular expression used to match
@@ -1415,7 +1433,7 @@ spec:
                   middleware reissues requests a given number of times to a backend
                   server if that server does not reply. As soon as the server answers,
                   the middleware stops retrying, regardless of the response status.
-                  More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/retry/'
+                  More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/retry/'
                 properties:
                   attempts:
                     description: Attempts defines how many times the request should
@@ -1435,7 +1453,7 @@ spec:
               stripPrefix:
                 description: 'StripPrefix holds the strip prefix middleware configuration.
                   This middleware removes the specified prefixes from the URL path.
-                  More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/stripprefix/'
+                  More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/stripprefix/'
                 properties:
                   forceSlash:
                     description: 'ForceSlash ensures that the resulting stripped path
@@ -1452,7 +1470,7 @@ spec:
               stripPrefixRegex:
                 description: 'StripPrefixRegex holds the strip prefix regex middleware
                   configuration. This middleware removes the matching prefixes from
-                  the URL path. More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/stripprefixregex/'
+                  the URL path. More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/stripprefixregex/'
                 properties:
                   regex:
                     description: Regex defines the regular expression to match the
@@ -1496,7 +1514,7 @@ spec:
     schema:
       openAPIV3Schema:
         description: 'MiddlewareTCP is the CRD implementation of a Traefik TCP middleware.
-          More info: https://doc.traefik.io/traefik/v2.7/middlewares/overview/'
+          More info: https://doc.traefik.io/traefik/v2.8/middlewares/overview/'
         properties:
           apiVersion:
             description: 'APIVersion defines the versioned schema of this representation
@@ -1570,7 +1588,7 @@ spec:
         description: 'ServersTransport is the CRD implementation of a ServersTransport.
           If no serversTransport is specified, the default@internal will be used.
           The default@internal serversTransport is created from the static configuration.
-          More info: https://doc.traefik.io/traefik/v2.7/routing/services/#serverstransport_1'
+          More info: https://doc.traefik.io/traefik/v2.8/routing/services/#serverstransport_1'
         properties:
           apiVersion:
             description: 'APIVersion defines the versioned schema of this representation
@@ -1697,7 +1715,7 @@ spec:
       openAPIV3Schema:
         description: 'TLSOption is the CRD implementation of a Traefik TLS Option,
           allowing to configure some parameters of the TLS connection. More info:
-          https://doc.traefik.io/traefik/v2.7/https/tls/#tls-options'
+          https://doc.traefik.io/traefik/v2.8/https/tls/#tls-options'
         properties:
           apiVersion:
             description: 'APIVersion defines the versioned schema of this representation
@@ -1717,13 +1735,13 @@ spec:
               alpnProtocols:
                 description: 'ALPNProtocols defines the list of supported application
                   level protocols for the TLS handshake, in order of preference. More
-                  info: https://doc.traefik.io/traefik/v2.7/https/tls/#alpn-protocols'
+                  info: https://doc.traefik.io/traefik/v2.8/https/tls/#alpn-protocols'
                 items:
                   type: string
                 type: array
               cipherSuites:
                 description: 'CipherSuites defines the list of supported cipher suites
-                  for TLS versions up to TLS 1.2. More info: https://doc.traefik.io/traefik/v2.7/https/tls/#cipher-suites'
+                  for TLS versions up to TLS 1.2. More info: https://doc.traefik.io/traefik/v2.8/https/tls/#cipher-suites'
                 items:
                   type: string
                 type: array
@@ -1750,7 +1768,7 @@ spec:
                 type: object
               curvePreferences:
                 description: 'CurvePreferences defines the preferred elliptic curves
-                  in a specific order. More info: https://doc.traefik.io/traefik/v2.7/https/tls/#curve-preferences'
+                  in a specific order. More info: https://doc.traefik.io/traefik/v2.8/https/tls/#curve-preferences'
                 items:
                   type: string
                 type: array
@@ -1810,7 +1828,7 @@ spec:
         description: 'TLSStore is the CRD implementation of a Traefik TLS Store. For
           the time being, only the TLSStore named default is supported. This means
           that you cannot have two stores that are named default in different Kubernetes
-          namespaces. More info: https://doc.traefik.io/traefik/v2.7/https/tls/#certificates-stores'
+          namespaces. More info: https://doc.traefik.io/traefik/v2.8/https/tls/#certificates-stores'
         properties:
           apiVersion:
             description: 'APIVersion defines the versioned schema of this representation
@@ -1827,6 +1845,20 @@ spec:
           spec:
             description: TLSStoreSpec defines the desired state of a TLSStore.
             properties:
+              certificates:
+                description: Certificates is a list of secret names, each secret holding
+                  a key/certificate pair to add to the store.
+                items:
+                  description: Certificate holds a secret name for the TLSStore resource.
+                  properties:
+                    secretName:
+                      description: SecretName is the name of the referenced Kubernetes
+                        Secret to specify the certificate details.
+                      type: string
+                  required:
+                  - secretName
+                  type: object
+                type: array
               defaultCertificate:
                 description: DefaultCertificate defines the default certificate configuration.
                 properties:
@@ -1837,8 +1869,6 @@ spec:
                 required:
                 - secretName
                 type: object
-            required:
-            - defaultCertificate
             type: object
         required:
         - metadata
@@ -1875,7 +1905,7 @@ spec:
       openAPIV3Schema:
         description: 'TraefikService is the CRD implementation of a Traefik Service.
           TraefikService object allows to:  - Apply weight to Services on load-balancing  -
-          Mirror traffic on services More info: https://doc.traefik.io/traefik/v2.7/routing/providers/kubernetes-crd/#kind-traefikservice'
+          Mirror traffic on services More info: https://doc.traefik.io/traefik/v2.8/routing/providers/kubernetes-crd/#kind-traefikservice'
         properties:
           apiVersion:
             description: 'APIVersion defines the versioned schema of this representation
@@ -1974,7 +2004,7 @@ spec:
                           type: string
                         sticky:
                           description: 'Sticky defines the sticky sessions configuration.
-                            More info: https://doc.traefik.io/traefik/v2.7/routing/services/#sticky-sessions'
+                            More info: https://doc.traefik.io/traefik/v2.8/routing/services/#sticky-sessions'
                           properties:
                             cookie:
                               description: Cookie defines the sticky cookie configuration.
@@ -2058,7 +2088,7 @@ spec:
                     type: string
                   sticky:
                     description: 'Sticky defines the sticky sessions configuration.
-                      More info: https://doc.traefik.io/traefik/v2.7/routing/services/#sticky-sessions'
+                      More info: https://doc.traefik.io/traefik/v2.8/routing/services/#sticky-sessions'
                     properties:
                       cookie:
                         description: Cookie defines the sticky cookie configuration.
@@ -2158,7 +2188,7 @@ spec:
                           type: string
                         sticky:
                           description: 'Sticky defines the sticky sessions configuration.
-                            More info: https://doc.traefik.io/traefik/v2.7/routing/services/#sticky-sessions'
+                            More info: https://doc.traefik.io/traefik/v2.8/routing/services/#sticky-sessions'
                           properties:
                             cookie:
                               description: Cookie defines the sticky cookie configuration.
@@ -2197,7 +2227,7 @@ spec:
                     type: array
                   sticky:
                     description: 'Sticky defines whether sticky sessions are enabled.
-                      More info: https://doc.traefik.io/traefik/v2.7/routing/providers/kubernetes-crd/#stickiness-and-load-balancing'
+                      More info: https://doc.traefik.io/traefik/v2.8/routing/providers/kubernetes-crd/#stickiness-and-load-balancing'
                     properties:
                       cookie:
                         description: Cookie defines the sticky cookie configuration.

pkg/config/dynamic/middlewares.go

@@ -55,7 +55,7 @@ type ContentType struct {
 
 // AddPrefix holds the add prefix middleware configuration.
 // This middleware updates the path of a request before forwarding it.
-// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/addprefix/
+// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/addprefix/
 type AddPrefix struct {
 	// Prefix is the string to add before the current path in the requested URL.
 	// It should include a leading slash (/).
@@ -66,7 +66,7 @@ type AddPrefix struct {
 
 // BasicAuth holds the basic auth middleware configuration.
 // This middleware restricts access to your services to known users.
-// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/basicauth/
+// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/basicauth/
 type BasicAuth struct {
 	// Users is an array of authorized users.
 	// Each user must be declared using the name:hashed-password format.
@@ -81,7 +81,7 @@ type BasicAuth struct {
 	// Default: false.
 	RemoveHeader bool `json:"removeHeader,omitempty" toml:"removeHeader,omitempty" yaml:"removeHeader,omitempty" export:"true"`
 	// HeaderField defines a header field to store the authenticated user.
-	// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/basicauth/#headerfield
+	// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/basicauth/#headerfield
 	HeaderField string `json:"headerField,omitempty" toml:"headerField,omitempty" yaml:"headerField,omitempty" export:"true"`
 }
 
@@ -89,7 +89,7 @@ type BasicAuth struct {
 
 // Buffering holds the buffering middleware configuration.
 // This middleware retries or limits the size of requests that can be forwarded to backends.
-// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/buffering/#maxrequestbodybytes
+// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/buffering/#maxrequestbodybytes
 type Buffering struct {
 	// MaxRequestBodyBytes defines the maximum allowed body size for the request (in bytes).
 	// If the request exceeds the allowed size, it is not forwarded to the service, and the client gets a 413 (Request Entity Too Large) response.
@@ -107,7 +107,7 @@ type Buffering struct {
 	MemResponseBodyBytes int64 `json:"memResponseBodyBytes,omitempty" toml:"memResponseBodyBytes,omitempty" yaml:"memResponseBodyBytes,omitempty" export:"true"`
 	// RetryExpression defines the retry conditions.
 	// It is a logical combination of functions with operators AND (&&) and OR (||).
-	// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/buffering/#retryexpression
+	// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/buffering/#retryexpression
 	RetryExpression string `json:"retryExpression,omitempty" toml:"retryExpression,omitempty" yaml:"retryExpression,omitempty" export:"true"`
 }
 
@@ -124,17 +124,30 @@ type Chain struct {
 
 // CircuitBreaker holds the circuit breaker middleware configuration.
 // This middleware protects the system from stacking requests to unhealthy services, resulting in cascading failures.
-// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/circuitbreaker/
+// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/circuitbreaker/
 type CircuitBreaker struct {
 	// Expression defines the expression that, once matched, opens the circuit breaker and applies the fallback mechanism instead of calling the services.
 	Expression string `json:"expression,omitempty" toml:"expression,omitempty" yaml:"expression,omitempty" export:"true"`
+	// CheckPeriod is the interval between successive checks of the circuit breaker condition (when in standby state).
+	CheckPeriod ptypes.Duration `json:"checkPeriod,omitempty" toml:"checkPeriod,omitempty" yaml:"checkPeriod,omitempty" export:"true"`
+	// FallbackDuration is the duration for which the circuit breaker will wait before trying to recover (from a tripped state).
+	FallbackDuration ptypes.Duration `json:"fallbackDuration,omitempty" toml:"fallbackDuration,omitempty" yaml:"fallbackDuration,omitempty" export:"true"`
+	// RecoveryDuration is the duration for which the circuit breaker will try to recover (as soon as it is in recovering state).
+	RecoveryDuration ptypes.Duration `json:"recoveryDuration,omitempty" toml:"recoveryDuration,omitempty" yaml:"recoveryDuration,omitempty" export:"true"`
+}
+
+// SetDefaults sets the default values on a RateLimit.
+func (c *CircuitBreaker) SetDefaults() {
+	c.CheckPeriod = ptypes.Duration(100 * time.Millisecond)
+	c.FallbackDuration = ptypes.Duration(10 * time.Second)
+	c.RecoveryDuration = ptypes.Duration(10 * time.Second)
 }
 
 // +k8s:deepcopy-gen=true
 
 // Compress holds the compress middleware configuration.
 // This middleware compresses responses before sending them to the client, using gzip compression.
-// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/compress/
+// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/compress/
 type Compress struct {
 	// ExcludedContentTypes defines the list of content types to compare the Content-Type header of the incoming requests and responses before compressing.
 	ExcludedContentTypes []string `json:"excludedContentTypes,omitempty" toml:"excludedContentTypes,omitempty" yaml:"excludedContentTypes,omitempty" export:"true"`
@@ -147,7 +160,7 @@ type Compress struct {
 
 // DigestAuth holds the digest auth middleware configuration.
 // This middleware restricts access to your services to known users.
-// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/digestauth/
+// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/digestauth/
 type DigestAuth struct {
 	// Users defines the authorized users.
 	// Each user should be declared using the name:realm:encoded-password format.
@@ -160,7 +173,7 @@ type DigestAuth struct {
 	// Default: traefik.
 	Realm string `json:"realm,omitempty" toml:"realm,omitempty" yaml:"realm,omitempty"`
 	// HeaderField defines a header field to store the authenticated user.
-	// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/basicauth/#headerfield
+	// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/basicauth/#headerfield
 	HeaderField string `json:"headerField,omitempty" toml:"headerField,omitempty" yaml:"headerField,omitempty" export:"true"`
 }
 
@@ -186,7 +199,7 @@ type ErrorPage struct {
 
 // ForwardAuth holds the forward auth middleware configuration.
 // This middleware delegates the request authentication to a Service.
-// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/forwardauth/
+// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/forwardauth/
 type ForwardAuth struct {
 	// Address defines the authentication server address.
 	Address string `json:"address,omitempty" toml:"address,omitempty" yaml:"address,omitempty"`
@@ -197,7 +210,7 @@ type ForwardAuth struct {
 	// AuthResponseHeaders defines the list of headers to copy from the authentication server response and set on forwarded request, replacing any existing conflicting headers.
 	AuthResponseHeaders []string `json:"authResponseHeaders,omitempty" toml:"authResponseHeaders,omitempty" yaml:"authResponseHeaders,omitempty" export:"true"`
 	// AuthResponseHeadersRegex defines the regex to match headers to copy from the authentication server response and set on forwarded request, after stripping all headers that match the regex.
-	// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/forwardauth/#authresponseheadersregex
+	// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/forwardauth/#authresponseheadersregex
 	AuthResponseHeadersRegex string `json:"authResponseHeadersRegex,omitempty" toml:"authResponseHeadersRegex,omitempty" yaml:"authResponseHeadersRegex,omitempty" export:"true"`
 	// AuthRequestHeaders defines the list of the headers to copy from the request to the authentication server.
 	// If not set or empty then all request headers are passed.
@@ -208,7 +221,7 @@ type ForwardAuth struct {
 
 // Headers holds the headers middleware configuration.
 // This middleware manages the requests and responses headers.
-// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/headers/#customrequestheaders
+// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/headers/#customrequestheaders
 type Headers struct {
 	// CustomRequestHeaders defines the header names and values to apply to the request.
 	CustomRequestHeaders map[string]string `json:"customRequestHeaders,omitempty" toml:"customRequestHeaders,omitempty" yaml:"customRequestHeaders,omitempty" export:"true"`
@@ -333,7 +346,7 @@ func (h *Headers) HasSecureHeadersDefined() bool {
 // +k8s:deepcopy-gen=true
 
 // IPStrategy holds the IP strategy configuration used by Traefik to determine the client IP.
-// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/ipwhitelist/#ipstrategy
+// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/ipwhitelist/#ipstrategy
 type IPStrategy struct {
 	// Depth tells Traefik to use the X-Forwarded-For header and take the IP located at the depth position (starting from the right).
 	Depth int `json:"depth,omitempty" toml:"depth,omitempty" yaml:"depth,omitempty" export:"true"`
@@ -374,7 +387,7 @@ func (s *IPStrategy) Get() (ip.Strategy, error) {
 
 // IPWhiteList holds the IP whitelist middleware configuration.
 // This middleware accepts / refuses requests based on the client IP.
-// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/ipwhitelist/
+// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/ipwhitelist/
 type IPWhiteList struct {
 	// SourceRange defines the set of allowed IPs (or ranges of allowed IPs by using CIDR notation).
 	SourceRange []string    `json:"sourceRange,omitempty" toml:"sourceRange,omitempty" yaml:"sourceRange,omitempty"`
@@ -385,7 +398,7 @@ type IPWhiteList struct {
 
 // InFlightReq holds the in-flight request middleware configuration.
 // This middleware limits the number of requests being processed and served concurrently.
-// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/inflightreq/
+// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/inflightreq/
 type InFlightReq struct {
 	// Amount defines the maximum amount of allowed simultaneous in-flight request.
 	// The middleware responds with HTTP 429 Too Many Requests if there are already amount requests in progress (based on the same sourceCriterion strategy).
@@ -393,7 +406,7 @@ type InFlightReq struct {
 	// SourceCriterion defines what criterion is used to group requests as originating from a common source.
 	// If several strategies are defined at the same time, an error will be raised.
 	// If none are set, the default is to use the requestHost.
-	// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/inflightreq/#sourcecriterion
+	// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/inflightreq/#sourcecriterion
 	SourceCriterion *SourceCriterion `json:"sourceCriterion,omitempty" toml:"sourceCriterion,omitempty" yaml:"sourceCriterion,omitempty" export:"true"`
 }
 
@@ -401,7 +414,7 @@ type InFlightReq struct {
 
 // PassTLSClientCert holds the pass TLS client cert middleware configuration.
 // This middleware adds the selected data from the passed client TLS certificate to a header.
-// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/passtlsclientcert/
+// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/passtlsclientcert/
 type PassTLSClientCert struct {
 	// PEM sets the X-Forwarded-Tls-Client-Cert header with the escaped certificate.
 	PEM bool `json:"pem,omitempty" toml:"pem,omitempty" yaml:"pem,omitempty" export:"true"`
@@ -457,7 +470,7 @@ func (r *RateLimit) SetDefaults() {
 
 // RedirectRegex holds the redirect regex middleware configuration.
 // This middleware redirects a request using regex matching and replacement.
-// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/redirectregex/#regex
+// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/redirectregex/#regex
 type RedirectRegex struct {
 	// Regex defines the regex used to match and capture elements from the request URL.
 	Regex string `json:"regex,omitempty" toml:"regex,omitempty" yaml:"regex,omitempty"`
@@ -471,7 +484,7 @@ type RedirectRegex struct {
 
 // RedirectScheme holds the redirect scheme middleware configuration.
 // This middleware redirects requests from a scheme/port to another.
-// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/redirectscheme/
+// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/redirectscheme/
 type RedirectScheme struct {
 	// Scheme defines the scheme of the new URL.
 	Scheme string `json:"scheme,omitempty" toml:"scheme,omitempty" yaml:"scheme,omitempty" export:"true"`
@@ -485,7 +498,7 @@ type RedirectScheme struct {
 
 // ReplacePath holds the replace path middleware configuration.
 // This middleware replaces the path of the request URL and store the original path in an X-Replaced-Path header.
-// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/replacepath/
+// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/replacepath/
 type ReplacePath struct {
 	// Path defines the path to use as replacement in the request URL.
 	Path string `json:"path,omitempty" toml:"path,omitempty" yaml:"path,omitempty" export:"true"`
@@ -495,7 +508,7 @@ type ReplacePath struct {
 
 // ReplacePathRegex holds the replace path regex middleware configuration.
 // This middleware replaces the path of a URL using regex matching and replacement.
-// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/replacepathregex/
+// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/replacepathregex/
 type ReplacePathRegex struct {
 	// Regex defines the regular expression used to match and capture the path from the request URL.
 	Regex string `json:"regex,omitempty" toml:"regex,omitempty" yaml:"regex,omitempty" export:"true"`
@@ -508,7 +521,7 @@ type ReplacePathRegex struct {
 // Retry holds the retry middleware configuration.
 // This middleware reissues requests a given number of times to a backend server if that server does not reply.
 // As soon as the server answers, the middleware stops retrying, regardless of the response status.
-// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/retry/
+// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/retry/
 type Retry struct {
 	// Attempts defines how many times the request should be retried.
 	Attempts int `json:"attempts,omitempty" toml:"attempts,omitempty" yaml:"attempts,omitempty" export:"true"`
@@ -524,7 +537,7 @@ type Retry struct {
 
 // StripPrefix holds the strip prefix middleware configuration.
 // This middleware removes the specified prefixes from the URL path.
-// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/stripprefix/
+// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/stripprefix/
 type StripPrefix struct {
 	// Prefixes defines the prefixes to strip from the request URL.
 	Prefixes []string `json:"prefixes,omitempty" toml:"prefixes,omitempty" yaml:"prefixes,omitempty" export:"true"`
@@ -542,7 +555,7 @@ func (s *StripPrefix) SetDefaults() {
 
 // StripPrefixRegex holds the strip prefix regex middleware configuration.
 // This middleware removes the matching prefixes from the URL path.
-// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/stripprefixregex/
+// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/stripprefixregex/
 type StripPrefixRegex struct {
 	// Regex defines the regular expression to match the path prefix from the request URL.
 	Regex []string `json:"regex,omitempty" toml:"regex,omitempty" yaml:"regex,omitempty" export:"true"`

pkg/config/dynamic/tcp_config.go

@@ -114,7 +114,7 @@ type TCPServer struct {
 // +k8s:deepcopy-gen=true
 
 // ProxyProtocol holds the PROXY Protocol configuration.
-// More info: https://doc.traefik.io/traefik/v2.7/routing/services/#proxy-protocol
+// More info: https://doc.traefik.io/traefik/v2.8/routing/services/#proxy-protocol
 type ProxyProtocol struct {
 	// Version defines the PROXY Protocol version to use.
 	Version int `json:"version,omitempty" toml:"version,omitempty" yaml:"version,omitempty" export:"true"`

pkg/config/dynamic/tcp_middlewares.go

@@ -13,7 +13,7 @@ type TCPMiddleware struct {
 // TCPInFlightConn holds the TCP InFlightConn middleware configuration.
 // This middleware prevents services from being overwhelmed with high load,
 // by limiting the number of allowed simultaneous connections for one IP.
-// More info: https://doc.traefik.io/traefik/v2.7/middlewares/tcp/inflightconn/
+// More info: https://doc.traefik.io/traefik/v2.8/middlewares/tcp/inflightconn/
 type TCPInFlightConn struct {
 	// Amount defines the maximum amount of allowed simultaneous connections.
 	// The middleware closes the connection if there are already amount connections opened.

pkg/config/label/label_test.go

@@ -27,6 +27,9 @@ func TestDecodeConfiguration(t *testing.T) {
 		"traefik.http.middlewares.Middleware2.buffering.retryexpression":                           "foobar",
 		"traefik.http.middlewares.Middleware3.chain.middlewares":                                   "foobar, fiibar",
 		"traefik.http.middlewares.Middleware4.circuitbreaker.expression":                           "foobar",
+		"traefik.HTTP.Middlewares.Middleware4.circuitbreaker.checkperiod":                          "1s",
+		"traefik.HTTP.Middlewares.Middleware4.circuitbreaker.fallbackduration":                     "1s",
+		"traefik.HTTP.Middlewares.Middleware4.circuitbreaker.recoveryduration":                     "1s",
 		"traefik.http.middlewares.Middleware5.digestauth.headerfield":                              "foobar",
 		"traefik.http.middlewares.Middleware5.digestauth.realm":                                    "foobar",
 		"traefik.http.middlewares.Middleware5.digestauth.removeheader":                             "true",
@@ -488,7 +491,10 @@ func TestDecodeConfiguration(t *testing.T) {
 				},
 				"Middleware4": {
 					CircuitBreaker: &dynamic.CircuitBreaker{
-						Expression: "foobar",
+						Expression:       "foobar",
+						CheckPeriod:      ptypes.Duration(time.Second),
+						FallbackDuration: ptypes.Duration(time.Second),
+						RecoveryDuration: ptypes.Duration(time.Second),
 					},
 				},
 				"Middleware5": {
@@ -983,7 +989,10 @@ func TestEncodeConfiguration(t *testing.T) {
 				},
 				"Middleware4": {
 					CircuitBreaker: &dynamic.CircuitBreaker{
-						Expression: "foobar",
+						Expression:       "foobar",
+						CheckPeriod:      ptypes.Duration(time.Second),
+						FallbackDuration: ptypes.Duration(time.Second),
+						RecoveryDuration: ptypes.Duration(time.Second),
 					},
 				},
 				"Middleware5": {
@@ -1191,6 +1200,9 @@ func TestEncodeConfiguration(t *testing.T) {
 		"traefik.HTTP.Middlewares.Middleware2.Buffering.RetryExpression":                           "foobar",
 		"traefik.HTTP.Middlewares.Middleware3.Chain.Middlewares":                                   "foobar, fiibar",
 		"traefik.HTTP.Middlewares.Middleware4.CircuitBreaker.Expression":                           "foobar",
+		"traefik.HTTP.Middlewares.Middleware4.CircuitBreaker.CheckPeriod":                          "1000000000",
+		"traefik.HTTP.Middlewares.Middleware4.CircuitBreaker.FallbackDuration":                     "1000000000",
+		"traefik.HTTP.Middlewares.Middleware4.CircuitBreaker.RecoveryDuration":                     "1000000000",
 		"traefik.HTTP.Middlewares.Middleware5.DigestAuth.HeaderField":                              "foobar",
 		"traefik.HTTP.Middlewares.Middleware5.DigestAuth.Realm":                                    "foobar",
 		"traefik.HTTP.Middlewares.Middleware5.DigestAuth.RemoveHeader":                             "true",

pkg/config/static/entrypoints.go

@@ -16,7 +16,8 @@ type EntryPoint struct {
 	ProxyProtocol    *ProxyProtocol        `description:"Proxy-Protocol configuration." json:"proxyProtocol,omitempty" toml:"proxyProtocol,omitempty" yaml:"proxyProtocol,omitempty" label:"allowEmpty" file:"allowEmpty" export:"true"`
 	ForwardedHeaders *ForwardedHeaders     `description:"Trust client forwarding headers." json:"forwardedHeaders,omitempty" toml:"forwardedHeaders,omitempty" yaml:"forwardedHeaders,omitempty" export:"true"`
 	HTTP             HTTPConfig            `description:"HTTP configuration." json:"http,omitempty" toml:"http,omitempty" yaml:"http,omitempty" export:"true"`
-	HTTP3            *HTTP3Config          `description:"HTTP3 configuration." json:"http3,omitempty" toml:"http3,omitempty" yaml:"http3,omitempty" label:"allowEmpty" file:"allowEmpty" export:"true"`
+	HTTP2            *HTTP2Config          `description:"HTTP/2 configuration." json:"http2,omitempty" toml:"http2,omitempty" yaml:"http2,omitempty" export:"true"`
+	HTTP3            *HTTP3Config          `description:"HTTP/3 configuration." json:"http3,omitempty" toml:"http3,omitempty" yaml:"http3,omitempty" label:"allowEmpty" file:"allowEmpty" export:"true"`
 	UDP              *UDPConfig            `description:"UDP configuration." json:"udp,omitempty" toml:"udp,omitempty" yaml:"udp,omitempty"`
 }
 
@@ -50,6 +51,8 @@ func (ep *EntryPoint) SetDefaults() {
 	ep.ForwardedHeaders = &ForwardedHeaders{}
 	ep.UDP = &UDPConfig{}
 	ep.UDP.SetDefaults()
+	ep.HTTP2 = &HTTP2Config{}
+	ep.HTTP2.SetDefaults()
 }
 
 // HTTPConfig is the HTTP configuration of an entry point.
@@ -59,9 +62,19 @@ type HTTPConfig struct {
 	TLS          *TLSConfig    `description:"Default TLS configuration for the routers linked to the entry point." json:"tls,omitempty" toml:"tls,omitempty" yaml:"tls,omitempty" label:"allowEmpty" file:"allowEmpty" export:"true"`
 }
 
+// HTTP2Config is the HTTP2 configuration of an entry point.
+type HTTP2Config struct {
+	MaxConcurrentStreams int32 `description:"Specifies the number of concurrent streams per connection that each client is allowed to initiate." json:"maxConcurrentStreams,omitempty" toml:"maxConcurrentStreams,omitempty" yaml:"maxConcurrentStreams,omitempty" export:"true"`
+}
+
+// SetDefaults sets the default values.
+func (c *HTTP2Config) SetDefaults() {
+	c.MaxConcurrentStreams = 250 // https://cs.opensource.google/go/x/net/+/cd36cc07:http2/server.go;l=58
+}
+
 // HTTP3Config is the HTTP3 configuration of an entry point.
 type HTTP3Config struct {
-	AdvertisedPort int32 `description:"UDP port to advertise, on which HTTP/3 is available." json:"advertisedPort,omitempty" toml:"advertisedPort,omitempty" yaml:"advertisedPort,omitempty" export:"true"`
+	AdvertisedPort int `description:"UDP port to advertise, on which HTTP/3 is available." json:"advertisedPort,omitempty" toml:"advertisedPort,omitempty" yaml:"advertisedPort,omitempty" export:"true"`
 }
 
 // Redirections is a set of redirection for an entry point.

pkg/config/static/pilot.go

@@ -1,6 +1,7 @@
 package static
 
 // Pilot Configuration related to Traefik Pilot.
+// Deprecated.
 type Pilot struct {
 	Token     string `description:"Traefik Pilot token." json:"token,omitempty" toml:"token,omitempty" yaml:"token,omitempty" loggable:"false"`
 	Dashboard bool   `description:"Enable Traefik Pilot in the dashboard." json:"dashboard,omitempty" toml:"dashboard,omitempty" yaml:"dashboard,omitempty"`

pkg/config/static/static_config.go

@@ -26,6 +26,7 @@ import (
 	"github.com/traefik/traefik/v2/pkg/provider/kv/redis"
 	"github.com/traefik/traefik/v2/pkg/provider/kv/zk"
 	"github.com/traefik/traefik/v2/pkg/provider/marathon"
+	"github.com/traefik/traefik/v2/pkg/provider/nomad"
 	"github.com/traefik/traefik/v2/pkg/provider/rancher"
 	"github.com/traefik/traefik/v2/pkg/provider/rest"
 	"github.com/traefik/traefik/v2/pkg/tls"
@@ -77,6 +78,7 @@ type Configuration struct {
 
 	CertificatesResolvers map[string]CertificateResolver `description:"Certificates resolvers configuration." json:"certificatesResolvers,omitempty" toml:"certificatesResolvers,omitempty" yaml:"certificatesResolvers,omitempty" export:"true"`
 
+	// Deprecated.
 	Pilot *Pilot `description:"Traefik Pilot configuration." json:"pilot,omitempty" toml:"pilot,omitempty" yaml:"pilot,omitempty" export:"true"`
 
 	Hub *hub.Provider `description:"Traefik Hub configuration." json:"hub,omitempty" toml:"hub,omitempty" yaml:"hub,omitempty" label:"allowEmpty" file:"allowEmpty" export:"true"`
@@ -175,22 +177,23 @@ func (t *Tracing) SetDefaults() {
 type Providers struct {
 	ProvidersThrottleDuration ptypes.Duration `description:"Backends throttle duration: minimum duration between 2 events from providers before applying a new configuration. It avoids unnecessary reloads if multiples events are sent in a short amount of time." json:"providersThrottleDuration,omitempty" toml:"providersThrottleDuration,omitempty" yaml:"providersThrottleDuration,omitempty" export:"true"`
 
-	Docker            *docker.Provider        `description:"Enable Docker backend with default settings." json:"docker,omitempty" toml:"docker,omitempty" yaml:"docker,omitempty" export:"true" label:"allowEmpty" file:"allowEmpty"`
-	File              *file.Provider          `description:"Enable File backend with default settings." json:"file,omitempty" toml:"file,omitempty" yaml:"file,omitempty" export:"true"`
-	Marathon          *marathon.Provider      `description:"Enable Marathon backend with default settings." json:"marathon,omitempty" toml:"marathon,omitempty" yaml:"marathon,omitempty" export:"true" label:"allowEmpty" file:"allowEmpty"`
-	KubernetesIngress *ingress.Provider       `description:"Enable Kubernetes backend with default settings." json:"kubernetesIngress,omitempty" toml:"kubernetesIngress,omitempty" yaml:"kubernetesIngress,omitempty" export:"true" label:"allowEmpty" file:"allowEmpty"`
-	KubernetesCRD     *crd.Provider           `description:"Enable Kubernetes backend with default settings." json:"kubernetesCRD,omitempty" toml:"kubernetesCRD,omitempty" yaml:"kubernetesCRD,omitempty" export:"true" label:"allowEmpty" file:"allowEmpty"`
-	KubernetesGateway *gateway.Provider       `description:"Enable Kubernetes gateway api provider with default settings." json:"kubernetesGateway,omitempty" toml:"kubernetesGateway,omitempty" yaml:"kubernetesGateway,omitempty" export:"true" label:"allowEmpty" file:"allowEmpty"`
-	Rest              *rest.Provider          `description:"Enable Rest backend with default settings." json:"rest,omitempty" toml:"rest,omitempty" yaml:"rest,omitempty" export:"true" label:"allowEmpty" file:"allowEmpty"`
-	Rancher           *rancher.Provider       `description:"Enable Rancher backend with default settings." json:"rancher,omitempty" toml:"rancher,omitempty" yaml:"rancher,omitempty" export:"true" label:"allowEmpty" file:"allowEmpty"`
-	ConsulCatalog     *consulcatalog.Provider `description:"Enable ConsulCatalog backend with default settings." json:"consulCatalog,omitempty" toml:"consulCatalog,omitempty" yaml:"consulCatalog,omitempty" label:"allowEmpty" file:"allowEmpty" export:"true"`
-	Ecs               *ecs.Provider           `description:"Enable AWS ECS backend with default settings." json:"ecs,omitempty" toml:"ecs,omitempty" yaml:"ecs,omitempty" label:"allowEmpty" file:"allowEmpty" export:"true"`
+	Docker            *docker.Provider               `description:"Enable Docker backend with default settings." json:"docker,omitempty" toml:"docker,omitempty" yaml:"docker,omitempty" export:"true" label:"allowEmpty" file:"allowEmpty"`
+	File              *file.Provider                 `description:"Enable File backend with default settings." json:"file,omitempty" toml:"file,omitempty" yaml:"file,omitempty" export:"true"`
+	Marathon          *marathon.Provider             `description:"Enable Marathon backend with default settings." json:"marathon,omitempty" toml:"marathon,omitempty" yaml:"marathon,omitempty" export:"true" label:"allowEmpty" file:"allowEmpty"`
+	KubernetesIngress *ingress.Provider              `description:"Enable Kubernetes backend with default settings." json:"kubernetesIngress,omitempty" toml:"kubernetesIngress,omitempty" yaml:"kubernetesIngress,omitempty" export:"true" label:"allowEmpty" file:"allowEmpty"`
+	KubernetesCRD     *crd.Provider                  `description:"Enable Kubernetes backend with default settings." json:"kubernetesCRD,omitempty" toml:"kubernetesCRD,omitempty" yaml:"kubernetesCRD,omitempty" export:"true" label:"allowEmpty" file:"allowEmpty"`
+	KubernetesGateway *gateway.Provider              `description:"Enable Kubernetes gateway api provider with default settings." json:"kubernetesGateway,omitempty" toml:"kubernetesGateway,omitempty" yaml:"kubernetesGateway,omitempty" export:"true" label:"allowEmpty" file:"allowEmpty"`
+	Rest              *rest.Provider                 `description:"Enable Rest backend with default settings." json:"rest,omitempty" toml:"rest,omitempty" yaml:"rest,omitempty" export:"true" label:"allowEmpty" file:"allowEmpty"`
+	Rancher           *rancher.Provider              `description:"Enable Rancher backend with default settings." json:"rancher,omitempty" toml:"rancher,omitempty" yaml:"rancher,omitempty" export:"true" label:"allowEmpty" file:"allowEmpty"`
+	ConsulCatalog     *consulcatalog.ProviderBuilder `description:"Enable ConsulCatalog backend with default settings." json:"consulCatalog,omitempty" toml:"consulCatalog,omitempty" yaml:"consulCatalog,omitempty" label:"allowEmpty" file:"allowEmpty" export:"true"`
+	Nomad             *nomad.Provider                `description:"Enable Nomad backend with default settings." json:"nomad,omitempty" toml:"nomad,omitempty" yaml:"nomad,omitempty" label:"allowEmpty" file:"allowEmpty" export:"true"`
+	Ecs               *ecs.Provider                  `description:"Enable AWS ECS backend with default settings." json:"ecs,omitempty" toml:"ecs,omitempty" yaml:"ecs,omitempty" label:"allowEmpty" file:"allowEmpty" export:"true"`
 
-	Consul    *consul.Provider `description:"Enable Consul backend with default settings." json:"consul,omitempty" toml:"consul,omitempty" yaml:"consul,omitempty" label:"allowEmpty" file:"allowEmpty"  export:"true"`
-	Etcd      *etcd.Provider   `description:"Enable Etcd backend with default settings." json:"etcd,omitempty" toml:"etcd,omitempty" yaml:"etcd,omitempty" label:"allowEmpty" file:"allowEmpty" export:"true"`
-	ZooKeeper *zk.Provider     `description:"Enable ZooKeeper backend with default settings." json:"zooKeeper,omitempty" toml:"zooKeeper,omitempty" yaml:"zooKeeper,omitempty" label:"allowEmpty" file:"allowEmpty" export:"true"`
-	Redis     *redis.Provider  `description:"Enable Redis backend with default settings." json:"redis,omitempty" toml:"redis,omitempty" yaml:"redis,omitempty" label:"allowEmpty" file:"allowEmpty" export:"true"`
-	HTTP      *http.Provider   `description:"Enable HTTP backend with default settings." json:"http,omitempty" toml:"http,omitempty" yaml:"http,omitempty" label:"allowEmpty" file:"allowEmpty" export:"true"`
+	Consul    *consul.ProviderBuilder `description:"Enable Consul backend with default settings." json:"consul,omitempty" toml:"consul,omitempty" yaml:"consul,omitempty" label:"allowEmpty" file:"allowEmpty"  export:"true"`
+	Etcd      *etcd.Provider          `description:"Enable Etcd backend with default settings." json:"etcd,omitempty" toml:"etcd,omitempty" yaml:"etcd,omitempty" label:"allowEmpty" file:"allowEmpty" export:"true"`
+	ZooKeeper *zk.Provider            `description:"Enable ZooKeeper backend with default settings." json:"zooKeeper,omitempty" toml:"zooKeeper,omitempty" yaml:"zooKeeper,omitempty" label:"allowEmpty" file:"allowEmpty" export:"true"`
+	Redis     *redis.Provider         `description:"Enable Redis backend with default settings." json:"redis,omitempty" toml:"redis,omitempty" yaml:"redis,omitempty" label:"allowEmpty" file:"allowEmpty" export:"true"`
+	HTTP      *http.Provider          `description:"Enable HTTP backend with default settings." json:"http,omitempty" toml:"http,omitempty" yaml:"http,omitempty" label:"allowEmpty" file:"allowEmpty" export:"true"`
 
 	Plugin map[string]PluginConf `description:"Plugins configuration." json:"plugin,omitempty" toml:"plugin,omitempty" yaml:"plugin,omitempty"`
 }
@@ -257,7 +260,7 @@ func (c *Configuration) SetEffectiveConfiguration() {
 		c.Pilot.SetDefaults()
 	}
 
-	// Disable Gateway API provider if not enabled in experimental
+	// Disable Gateway API provider if not enabled in experimental.
 	if c.Experimental == nil || !c.Experimental.KubernetesGateway {
 		c.Providers.KubernetesGateway = nil
 	}
@@ -328,6 +331,14 @@ func (c *Configuration) ValidateConfiguration() error {
 		acmeEmail = resolver.ACME.Email
 	}
 
+	if c.Providers.ConsulCatalog != nil && c.Providers.ConsulCatalog.Namespace != "" && len(c.Providers.ConsulCatalog.Namespaces) > 0 {
+		return fmt.Errorf("consul catalog provider cannot have both namespace and namespaces options configured")
+	}
+
+	if c.Providers.Consul != nil && c.Providers.Consul.Namespace != "" && len(c.Providers.Consul.Namespaces) > 0 {
+		return fmt.Errorf("consul provider cannot have both namespace and namespaces options configured")
+	}
+
 	return nil
 }
 

pkg/middlewares/circuitbreaker/circuit_breaker.go

@@ -3,6 +3,7 @@ package circuitbreaker
 import (
 	"context"
 	"net/http"
+	"time"
 
 	"github.com/opentracing/opentracing-go/ext"
 	"github.com/traefik/traefik/v2/pkg/config/dynamic"
@@ -12,9 +13,7 @@ import (
 	"github.com/vulcand/oxy/cbreaker"
 )
 
-const (
-	typeName = "CircuitBreaker"
-)
+const typeName = "CircuitBreaker"
 
 type circuitBreaker struct {
 	circuitBreaker *cbreaker.CircuitBreaker
@@ -27,9 +26,32 @@ func New(ctx context.Context, next http.Handler, confCircuitBreaker dynamic.Circ
 
 	logger := log.FromContext(middlewares.GetLoggerCtx(ctx, name, typeName))
 	logger.Debug("Creating middleware")
-	logger.Debug("Setting up with expression: %s", expression)
+	logger.Debugf("Setting up with expression: %s", expression)
 
-	oxyCircuitBreaker, err := cbreaker.New(next, expression, createCircuitBreakerOptions(expression))
+	cbOpts := []cbreaker.CircuitBreakerOption{
+		cbreaker.Fallback(http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
+			tracing.SetErrorWithEvent(req, "blocked by circuit-breaker (%q)", expression)
+			rw.WriteHeader(http.StatusServiceUnavailable)
+
+			if _, err := rw.Write([]byte(http.StatusText(http.StatusServiceUnavailable))); err != nil {
+				log.FromContext(req.Context()).Error(err)
+			}
+		})),
+	}
+
+	if confCircuitBreaker.CheckPeriod > 0 {
+		cbOpts = append(cbOpts, cbreaker.CheckPeriod(time.Duration(confCircuitBreaker.CheckPeriod)))
+	}
+
+	if confCircuitBreaker.FallbackDuration > 0 {
+		cbOpts = append(cbOpts, cbreaker.FallbackDuration(time.Duration(confCircuitBreaker.FallbackDuration)))
+	}
+
+	if confCircuitBreaker.RecoveryDuration > 0 {
+		cbOpts = append(cbOpts, cbreaker.RecoveryDuration(time.Duration(confCircuitBreaker.RecoveryDuration)))
+	}
+
+	oxyCircuitBreaker, err := cbreaker.New(next, expression, cbOpts...)
 	if err != nil {
 		return nil, err
 	}
@@ -39,18 +61,6 @@ func New(ctx context.Context, next http.Handler, confCircuitBreaker dynamic.Circ
 	}, nil
 }
 
-// NewCircuitBreakerOptions returns a new CircuitBreakerOption.
-func createCircuitBreakerOptions(expression string) cbreaker.CircuitBreakerOption {
-	return cbreaker.Fallback(http.HandlerFunc(func(rw http.ResponseWriter, req *http.Request) {
-		tracing.SetErrorWithEvent(req, "blocked by circuit-breaker (%q)", expression)
-		rw.WriteHeader(http.StatusServiceUnavailable)
-
-		if _, err := rw.Write([]byte(http.StatusText(http.StatusServiceUnavailable))); err != nil {
-			log.FromContext(req.Context()).Error(err)
-		}
-	}))
-}
-
 func (c *circuitBreaker) GetTracingInformation() (string, ext.SpanKindEnum) {
 	return c.name, tracing.SpanKindNoneEnum
 }

pkg/middlewares/customerrors/custom_errors.go

@@ -93,6 +93,7 @@ func (c *customErrors) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
 	if len(c.backendQuery) > 0 {
 		query = "/" + strings.TrimPrefix(c.backendQuery, "/")
 		query = strings.ReplaceAll(query, "{status}", strconv.Itoa(code))
+		query = strings.ReplaceAll(query, "{url}", url.QueryEscape(req.URL.String()))
 	}
 
 	pageReq, err := newRequest("http://" + req.Host + query)

pkg/middlewares/customerrors/custom_errors_test.go

@@ -133,6 +133,24 @@ func TestHandler(t *testing.T) {
 				assert.Contains(t, recorder.Body.String(), "localhost")
 			},
 		},
+		{
+			desc:        "full query replacement",
+			errorPage:   &dynamic.ErrorPage{Service: "error", Query: "/?status={status}&url={url}", Status: []string{"503"}},
+			backendCode: http.StatusServiceUnavailable,
+			backendErrorHandler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+				if r.RequestURI != "/?status=503&url=http%3A%2F%2Flocalhost%2Ftest%3Ffoo%3Dbar%26baz%3Dbuz" {
+					t.Log(r.RequestURI)
+					return
+				}
+
+				_, _ = fmt.Fprintln(w, "My 503 page.")
+			}),
+			validate: func(t *testing.T, recorder *httptest.ResponseRecorder) {
+				t.Helper()
+				assert.Equal(t, http.StatusServiceUnavailable, recorder.Code, "HTTP status")
+				assert.Contains(t, recorder.Body.String(), "My 503 page.")
+			},
+		},
 	}
 
 	for _, test := range testCases {
@@ -153,7 +171,7 @@ func TestHandler(t *testing.T) {
 			errorPageHandler, err := New(context.Background(), handler, *test.errorPage, serviceBuilderMock, "test")
 			require.NoError(t, err)
 
-			req := testhelpers.MustNewRequest(http.MethodGet, "http://localhost/test", nil)
+			req := testhelpers.MustNewRequest(http.MethodGet, "http://localhost/test?foo=bar&baz=buz", nil)
 
 			recorder := httptest.NewRecorder()
 			errorPageHandler.ServeHTTP(recorder, req)

pkg/pilot/pilot.go

@@ -194,8 +194,6 @@ func (c *client) SendInstanceInfo(ctx context.Context, pilotMetrics []metrics.Pi
 		if err != nil {
 			return fmt.Errorf("failed to create UUID: %w", err)
 		}
-
-		version.UUID = c.uuid
 	}
 
 	info := instanceInfo{

pkg/provider/aggregator/aggregator.go

@@ -109,11 +109,19 @@ func NewProviderAggregator(conf static.Providers) ProviderAggregator {
 	}
 
 	if conf.ConsulCatalog != nil {
-		p.quietAddProvider(conf.ConsulCatalog)
+		for _, pvd := range conf.ConsulCatalog.BuildProviders() {
+			p.quietAddProvider(pvd)
+		}
+	}
+
+	if conf.Nomad != nil {
+		p.quietAddProvider(conf.Nomad)
 	}
 
 	if conf.Consul != nil {
-		p.quietAddProvider(conf.Consul)
+		for _, pvd := range conf.Consul.BuildProviders() {
+			p.quietAddProvider(pvd)
+		}
 	}
 
 	if conf.Etcd != nil {

pkg/provider/consulcatalog/config_test.go

@@ -219,7 +219,7 @@ func TestDefaultRule(t *testing.T) {
 					Status:  api.HealthPassing,
 				},
 			},
-			defaultRule: DefaultTemplateRule,
+			defaultRule: defaultTemplateRule,
 			expected: &dynamic.Configuration{
 				TCP: &dynamic.TCPConfiguration{
 					Routers:     map[string]*dynamic.TCPRouter{},
@@ -262,8 +262,10 @@ func TestDefaultRule(t *testing.T) {
 			t.Parallel()
 
 			p := Provider{
-				ExposedByDefault: true,
-				DefaultRule:      test.defaultRule,
+				Configuration: Configuration{
+					ExposedByDefault: true,
+					DefaultRule:      test.defaultRule,
+				},
 			}
 
 			err := p.Init()
@@ -2618,10 +2620,12 @@ func Test_buildConfiguration(t *testing.T) {
 			t.Parallel()
 
 			p := Provider{
-				ExposedByDefault: true,
-				DefaultRule:      "Host(`{{ normalize .Name }}.traefik.wtf`)",
-				ConnectAware:     test.ConnectAware,
-				Constraints:      test.constraints,
+				Configuration: Configuration{
+					ExposedByDefault: true,
+					DefaultRule:      "Host(`{{ normalize .Name }}.traefik.wtf`)",
+					ConnectAware:     test.ConnectAware,
+					Constraints:      test.constraints,
+				},
 			}
 
 			err := p.Init()
@@ -2651,3 +2655,55 @@ func Test_buildConfiguration(t *testing.T) {
 		})
 	}
 }
+
+func TestNamespaces(t *testing.T) {
+	testCases := []struct {
+		desc               string
+		namespace          string
+		namespaces         []string
+		expectedNamespaces []string
+	}{
+		{
+			desc:               "no defined namespaces",
+			expectedNamespaces: []string{""},
+		},
+		{
+			desc:               "deprecated: use of defined namespace",
+			namespace:          "test-ns",
+			expectedNamespaces: []string{"test-ns"},
+		},
+		{
+			desc:               "use of 1 defined namespaces",
+			namespaces:         []string{"test-ns"},
+			expectedNamespaces: []string{"test-ns"},
+		},
+		{
+			desc:               "use of multiple defined namespaces",
+			namespaces:         []string{"test-ns1", "test-ns2", "test-ns3", "test-ns4"},
+			expectedNamespaces: []string{"test-ns1", "test-ns2", "test-ns3", "test-ns4"},
+		},
+	}
+
+	for _, test := range testCases {
+		test := test
+
+		t.Run(test.desc, func(t *testing.T) {
+			t.Parallel()
+
+			pb := &ProviderBuilder{
+				Namespace:  test.namespace,
+				Namespaces: test.namespaces,
+			}
+
+			assert.Equal(t, test.expectedNamespaces, extractNSFromProvider(pb.BuildProviders()))
+		})
+	}
+}
+
+func extractNSFromProvider(providers []*Provider) []string {
+	res := make([]string, len(providers))
+	for i, p := range providers {
+		res[i] = p.namespace
+	}
+	return res
+}

pkg/provider/consulcatalog/consul_catalog.go

@@ -22,8 +22,11 @@ import (
 	"github.com/traefik/traefik/v2/pkg/types"
 )
 
-// DefaultTemplateRule The default template for the default rule.
-const DefaultTemplateRule = "Host(`{{ normalize .Name }}`)"
+// defaultTemplateRule is the default template for the default rule.
+const defaultTemplateRule = "Host(`{{ normalize .Name }}`)"
+
+// providerName is the Consul Catalog provider name.
+const providerName = "consulcatalog"
 
 var _ provider.Provider = (*Provider)(nil)
 
@@ -41,12 +44,50 @@ type itemData struct {
 	ExtraConf  configuration
 }
 
-// Provider holds configurations of the provider.
-type Provider struct {
+// ProviderBuilder is responsible for constructing namespaced instances of the Consul Catalog provider.
+type ProviderBuilder struct {
+	Configuration `export:"true"`
+
+	// Deprecated: use Namespaces option instead.
+	Namespace  string   `description:"Sets the namespace used to discover services (Consul Enterprise only)." json:"namespace,omitempty" toml:"namespace,omitempty" yaml:"namespace,omitempty"`
+	Namespaces []string `description:"Sets the namespaces used to discover services (Consul Enterprise only)." json:"namespaces,omitempty" toml:"namespaces,omitempty" yaml:"namespaces,omitempty"`
+}
+
+// BuildProviders builds Consul Catalog provider instances for the given namespaces configuration.
+func (p *ProviderBuilder) BuildProviders() []*Provider {
+	// We can warn about that, because we've already made sure before that
+	// Namespace and Namespaces are mutually exclusive.
+	if p.Namespace != "" {
+		log.WithoutContext().Warnf("Namespace option is deprecated, please use the Namespaces option instead.")
+	}
+
+	if len(p.Namespaces) == 0 {
+		return []*Provider{{
+			Configuration: p.Configuration,
+			name:          providerName,
+			// p.Namespace could very well be empty.
+			namespace: p.Namespace,
+		}}
+	}
+
+	var providers []*Provider
+	for _, namespace := range p.Namespaces {
+		providers = append(providers, &Provider{
+			Configuration: p.Configuration,
+			name:          providerName + "-" + namespace,
+			namespace:     namespace,
+		})
+	}
+
+	return providers
+}
+
+// Configuration represents the Consul Catalog provider configuration.
+type Configuration struct {
 	Constraints       string          `description:"Constraints is an expression that Traefik matches against the container's labels to determine whether to create any route for that container." json:"constraints,omitempty" toml:"constraints,omitempty" yaml:"constraints,omitempty" export:"true"`
 	Endpoint          *EndpointConfig `description:"Consul endpoint settings" json:"endpoint,omitempty" toml:"endpoint,omitempty" yaml:"endpoint,omitempty" export:"true"`
-	Prefix            string          `description:"Prefix for consul service tags. Default 'traefik'" json:"prefix,omitempty" toml:"prefix,omitempty" yaml:"prefix,omitempty" export:"true"`
-	RefreshInterval   ptypes.Duration `description:"Interval for check Consul API. Default 15s" json:"refreshInterval,omitempty" toml:"refreshInterval,omitempty" yaml:"refreshInterval,omitempty" export:"true"`
+	Prefix            string          `description:"Prefix for consul service tags." json:"prefix,omitempty" toml:"prefix,omitempty" yaml:"prefix,omitempty" export:"true"`
+	RefreshInterval   ptypes.Duration `description:"Interval for check Consul API." json:"refreshInterval,omitempty" toml:"refreshInterval,omitempty" yaml:"refreshInterval,omitempty" export:"true"`
 	RequireConsistent bool            `description:"Forces the read to be fully consistent." json:"requireConsistent,omitempty" toml:"requireConsistent,omitempty" yaml:"requireConsistent,omitempty" export:"true"`
 	Stale             bool            `description:"Use stale consistency for catalog reads." json:"stale,omitempty" toml:"stale,omitempty" yaml:"stale,omitempty" export:"true"`
 	Cache             bool            `description:"Use local agent caching for catalog reads." json:"cache,omitempty" toml:"cache,omitempty" yaml:"cache,omitempty" export:"true"`
@@ -55,9 +96,25 @@ type Provider struct {
 	ConnectAware      bool            `description:"Enable Consul Connect support." json:"connectAware,omitempty" toml:"connectAware,omitempty" yaml:"connectAware,omitempty" export:"true"`
 	ConnectByDefault  bool            `description:"Consider every service as Connect capable by default." json:"connectByDefault,omitempty" toml:"connectByDefault,omitempty" yaml:"connectByDefault,omitempty" export:"true"`
 	ServiceName       string          `description:"Name of the Traefik service in Consul Catalog (needs to be registered via the orchestrator or manually)." json:"serviceName,omitempty" toml:"serviceName,omitempty" yaml:"serviceName,omitempty" export:"true"`
-	Namespace         string          `description:"Sets the namespace used to discover services (Consul Enterprise only)." json:"namespace,omitempty" toml:"namespace,omitempty" yaml:"namespace,omitempty" export:"true"`
 	Watch             bool            `description:"Watch Consul API events." json:"watch,omitempty" toml:"watch,omitempty" yaml:"watch,omitempty" export:"true"`
+}
 
+// SetDefaults sets the default values.
+func (c *Configuration) SetDefaults() {
+	c.Endpoint = &EndpointConfig{}
+	c.RefreshInterval = ptypes.Duration(15 * time.Second)
+	c.Prefix = "traefik"
+	c.ExposedByDefault = true
+	c.DefaultRule = defaultTemplateRule
+	c.ServiceName = "traefik"
+}
+
+// Provider is the Consul Catalog provider implementation.
+type Provider struct {
+	Configuration
+
+	name              string
+	namespace         string
 	client            *api.Client
 	defaultRuleTpl    *template.Template
 	certChan          chan *connectCert
@@ -81,17 +138,6 @@ type EndpointHTTPAuthConfig struct {
 	Password string `description:"Basic Auth password" json:"password,omitempty" toml:"password,omitempty" yaml:"password,omitempty" loggable:"false"`
 }
 
-// SetDefaults sets the default values.
-func (p *Provider) SetDefaults() {
-	endpoint := &EndpointConfig{}
-	p.Endpoint = endpoint
-	p.RefreshInterval = ptypes.Duration(15 * time.Second)
-	p.Prefix = "traefik"
-	p.ExposedByDefault = true
-	p.DefaultRule = DefaultTemplateRule
-	p.ServiceName = "traefik"
-}
-
 // Init the provider.
 func (p *Provider) Init() error {
 	defaultRuleTpl, err := provider.MakeDefaultRuleTemplate(p.DefaultRule, nil)
@@ -103,19 +149,24 @@ func (p *Provider) Init() error {
 	p.certChan = make(chan *connectCert, 1)
 	p.watchServicesChan = make(chan struct{}, 1)
 
+	// In case they didn't initialize Provider with BuildProviders.
+	if p.name == "" {
+		p.name = providerName
+	}
+
 	return nil
 }
 
 // Provide allows the consul catalog provider to provide configurations to traefik using the given configuration channel.
 func (p *Provider) Provide(configurationChan chan<- dynamic.Message, pool *safe.Pool) error {
 	var err error
-	p.client, err = createClient(p.Namespace, p.Endpoint)
+	p.client, err = createClient(p.namespace, p.Endpoint)
 	if err != nil {
 		return fmt.Errorf("failed to create consul client: %w", err)
 	}
 
 	pool.GoCtx(func(routineCtx context.Context) {
-		ctxLog := log.With(routineCtx, log.Str(log.ProviderName, "consulcatalog"))
+		ctxLog := log.With(routineCtx, log.Str(log.ProviderName, p.name))
 		logger := log.FromContext(ctxLog)
 
 		operation := func() error {
@@ -210,7 +261,7 @@ func (p *Provider) loadConfiguration(ctx context.Context, certInfo *connectCert,
 	}
 
 	configurationChan <- dynamic.Message{
-		ProviderName:  "consulcatalog",
+		ProviderName:  p.name,
 		Configuration: p.buildConfiguration(ctx, data, certInfo),
 	}
 

pkg/provider/kubernetes/crd/fixtures/with_tls_store_certificates.yml

@@ -0,0 +1,43 @@
+apiVersion: traefik.containo.us/v1alpha1
+kind: TLSStore
+metadata:
+  name: default
+  namespace: default
+
+spec:
+  certificates:
+    - secretName: supersecret
+
+---
+apiVersion: v1
+kind: Secret
+metadata:
+  name: supersecret
+  namespace: default
+
+data:
+  tls.crt: LS0tLS1CRUdJTiBDRVJUSUZJQ0FURS0tLS0tCi0tLS0tRU5EIENFUlRJRklDQVRFLS0tLS0=
+  tls.key: LS0tLS1CRUdJTiBQUklWQVRFIEtFWS0tLS0tCi0tLS0tRU5EIFBSSVZBVEUgS0VZLS0tLS0=
+
+---
+apiVersion: traefik.containo.us/v1alpha1
+kind: IngressRoute
+metadata:
+  name: test.route
+  namespace: default
+
+spec:
+  entryPoints:
+    - web
+
+  routes:
+  - match: Host(`foo.com`) && PathPrefix(`/bar`)
+    kind: Rule
+    priority: 12
+    services:
+    - name: whoami
+      port: 80
+
+  tls:
+    store:
+      name: default

pkg/provider/kubernetes/crd/kubernetes.go

@@ -179,18 +179,25 @@ func (p *Provider) Provide(configurationChan chan<- dynamic.Message, pool *safe.
 }
 
 func (p *Provider) loadConfigurationFromCRD(ctx context.Context, client Client) *dynamic.Configuration {
-	tlsConfigs := make(map[string]*tls.CertAndStores)
+	stores, tlsConfigs := buildTLSStores(ctx, client)
+	if tlsConfigs == nil {
+		tlsConfigs = make(map[string]*tls.CertAndStores)
+	}
+
 	conf := &dynamic.Configuration{
+		// TODO: choose between mutating and returning tlsConfigs
 		HTTP: p.loadIngressRouteConfiguration(ctx, client, tlsConfigs),
 		TCP:  p.loadIngressRouteTCPConfiguration(ctx, client, tlsConfigs),
 		UDP:  p.loadIngressRouteUDPConfiguration(ctx, client),
 		TLS: &dynamic.TLSConfiguration{
-			Certificates: getTLSConfig(tlsConfigs),
-			Options:      buildTLSOptions(ctx, client),
-			Stores:       buildTLSStores(ctx, client),
+			Options: buildTLSOptions(ctx, client),
+			Stores:  stores,
 		},
 	}
 
+	// Done after because tlsConfigs is mutated by the others above.
+	conf.TLS.Certificates = getTLSConfig(tlsConfigs)
+
 	for _, middleware := range client.GetMiddlewares() {
 		id := provider.Normalize(makeID(middleware.Namespace, middleware.Name))
 		ctxMid := log.With(ctx, log.Str(log.MiddlewareName, id))
@@ -243,6 +250,12 @@ func (p *Provider) loadConfigurationFromCRD(ctx context.Context, client Client)
 			continue
 		}
 
+		circuitBreaker, err := createCircuitBreakerMiddleware(middleware.Spec.CircuitBreaker)
+		if err != nil {
+			log.FromContext(ctxMid).Errorf("Error while reading circuit breaker middleware: %v", err)
+			continue
+		}
+
 		conf.HTTP.Middlewares[id] = &dynamic.Middleware{
 			AddPrefix:         middleware.Spec.AddPrefix,
 			StripPrefix:       middleware.Spec.StripPrefix,
@@ -261,7 +274,7 @@ func (p *Provider) loadConfigurationFromCRD(ctx context.Context, client Client)
 			ForwardAuth:       forwardAuth,
 			InFlightReq:       middleware.Spec.InFlightReq,
 			Buffering:         middleware.Spec.Buffering,
-			CircuitBreaker:    middleware.Spec.CircuitBreaker,
+			CircuitBreaker:    circuitBreaker,
 			Compress:          middleware.Spec.Compress,
 			PassTLSClientCert: middleware.Spec.PassTLSClientCert,
 			Retry:             retry,
@@ -425,6 +438,35 @@ func createPluginMiddleware(plugins map[string]apiextensionv1.JSON) (map[string]
 	return pc, nil
 }
 
+func createCircuitBreakerMiddleware(circuitBreaker *v1alpha1.CircuitBreaker) (*dynamic.CircuitBreaker, error) {
+	if circuitBreaker == nil {
+		return nil, nil
+	}
+
+	cb := &dynamic.CircuitBreaker{Expression: circuitBreaker.Expression}
+	cb.SetDefaults()
+
+	if circuitBreaker.CheckPeriod != nil {
+		if err := cb.CheckPeriod.Set(circuitBreaker.CheckPeriod.String()); err != nil {
+			return nil, err
+		}
+	}
+
+	if circuitBreaker.FallbackDuration != nil {
+		if err := cb.FallbackDuration.Set(circuitBreaker.FallbackDuration.String()); err != nil {
+			return nil, err
+		}
+	}
+
+	if circuitBreaker.RecoveryDuration != nil {
+		if err := cb.RecoveryDuration.Set(circuitBreaker.RecoveryDuration.String()); err != nil {
+			return nil, err
+		}
+	}
+
+	return cb, nil
+}
+
 func createRateLimitMiddleware(rateLimit *v1alpha1.RateLimit) (*dynamic.RateLimit, error) {
 	if rateLimit == nil {
 		return nil, nil
@@ -793,49 +835,60 @@ func buildTLSOptions(ctx context.Context, client Client) map[string]tls.Options
 	return tlsOptions
 }
 
-func buildTLSStores(ctx context.Context, client Client) map[string]tls.Store {
+func buildTLSStores(ctx context.Context, client Client) (map[string]tls.Store, map[string]*tls.CertAndStores) {
 	tlsStoreCRD := client.GetTLSStores()
-	var tlsStores map[string]tls.Store
-
 	if len(tlsStoreCRD) == 0 {
-		return tlsStores
+		return nil, nil
 	}
-	tlsStores = make(map[string]tls.Store)
+
 	var nsDefault []string
+	tlsStores := make(map[string]tls.Store)
+	tlsConfigs := make(map[string]*tls.CertAndStores)
 
-	for _, tlsStore := range tlsStoreCRD {
-		namespace := tlsStore.Namespace
-		secretName := tlsStore.Spec.DefaultCertificate.SecretName
-		logger := log.FromContext(log.With(ctx, log.Str("tlsStore", tlsStore.Name), log.Str("namespace", namespace), log.Str("secretName", secretName)))
+	for _, t := range tlsStoreCRD {
+		logger := log.FromContext(log.With(ctx, log.Str("TLSStore", t.Name), log.Str("namespace", t.Namespace)))
 
-		secret, exists, err := client.GetSecret(namespace, secretName)
-		if err != nil {
-			logger.Errorf("Failed to fetch secret %s/%s: %v", namespace, secretName, err)
-			continue
-		}
-		if !exists {
-			logger.Errorf("Secret %s/%s does not exist", namespace, secretName)
-			continue
-		}
+		id := makeID(t.Namespace, t.Name)
 
-		cert, key, err := getCertificateBlocks(secret, namespace, secretName)
-		if err != nil {
-			logger.Errorf("Could not get certificate blocks: %v", err)
-			continue
-		}
-
-		id := makeID(tlsStore.Namespace, tlsStore.Name)
 		// If the name is default, we override the default config.
-		if tlsStore.Name == tls.DefaultTLSStoreName {
-			id = tlsStore.Name
-			nsDefault = append(nsDefault, tlsStore.Namespace)
+		if t.Name == tls.DefaultTLSStoreName {
+			id = t.Name
+			nsDefault = append(nsDefault, t.Namespace)
 		}
-		tlsStores[id] = tls.Store{
-			DefaultCertificate: &tls.Certificate{
+
+		var tlsStore tls.Store
+
+		if t.Spec.DefaultCertificate != nil {
+			secretName := t.Spec.DefaultCertificate.SecretName
+
+			secret, exists, err := client.GetSecret(t.Namespace, secretName)
+			if err != nil {
+				logger.Errorf("Failed to fetch secret %s/%s: %v", t.Namespace, secretName, err)
+				continue
+			}
+			if !exists {
+				logger.Errorf("Secret %s/%s does not exist", t.Namespace, secretName)
+				continue
+			}
+
+			cert, key, err := getCertificateBlocks(secret, t.Namespace, secretName)
+			if err != nil {
+				logger.Errorf("Could not get certificate blocks: %v", err)
+				continue
+			}
+
+			tlsStore.DefaultCertificate = &tls.Certificate{
 				CertFile: tls.FileOrContent(cert),
 				KeyFile:  tls.FileOrContent(key),
-			},
+			}
 		}
+
+		if err := buildCertificates(client, id, t.Namespace, t.Spec.Certificates, tlsConfigs); err != nil {
+			logger.Errorf("Failed to load certificates: %v", err)
+			continue
+		}
+
+		tlsStores[id] = tlsStore
 	}
 
 	if len(nsDefault) > 1 {
@@ -843,7 +896,25 @@ func buildTLSStores(ctx context.Context, client Client) map[string]tls.Store {
 		log.FromContext(ctx).Errorf("Default TLS Stores defined in multiple namespaces: %v", nsDefault)
 	}
 
-	return tlsStores
+	return tlsStores, tlsConfigs
+}
+
+// buildCertificates loads TLSStore certificates from secrets and sets them into tlsConfigs.
+func buildCertificates(client Client, tlsStore, namespace string, certificates []v1alpha1.Certificate, tlsConfigs map[string]*tls.CertAndStores) error {
+	for _, c := range certificates {
+		configKey := namespace + "/" + c.SecretName
+		if _, tlsExists := tlsConfigs[configKey]; !tlsExists {
+			certAndStores, err := getTLS(client, c.SecretName, namespace)
+			if err != nil {
+				return fmt.Errorf("unable to read secret %s: %w", configKey, err)
+			}
+
+			certAndStores.Stores = []string{tlsStore}
+			tlsConfigs[configKey] = certAndStores
+		}
+	}
+
+	return nil
 }
 
 func makeServiceKey(rule, ingressName string) (string, error) {

pkg/provider/kubernetes/crd/kubernetes_http.go

@@ -495,6 +495,7 @@ func namespaceOrFallback(lb v1alpha1.LoadBalancerSpec, fallback string) string {
 	return fallback
 }
 
+// getTLSHTTP mutates tlsConfigs.
 func getTLSHTTP(ctx context.Context, ingressRoute *v1alpha1.IngressRoute, k8sClient Client, tlsConfigs map[string]*tls.CertAndStores) error {
 	if ingressRoute.Spec.TLS == nil {
 		return nil

pkg/provider/kubernetes/crd/kubernetes_tcp.go

@@ -269,6 +269,7 @@ func (p *Provider) loadTCPServers(client Client, namespace string, svc v1alpha1.
 	return servers, nil
 }
 
+// getTLSTCP mutates tlsConfigs.
 func getTLSTCP(ctx context.Context, ingressRoute *v1alpha1.IngressRouteTCP, k8sClient Client, tlsConfigs map[string]*tls.CertAndStores) error {
 	if ingressRoute.Spec.TLS == nil {
 		return nil

pkg/provider/kubernetes/crd/kubernetes_test.go

@@ -3480,6 +3480,63 @@ func TestLoadIngressRoutes(t *testing.T) {
 				},
 			},
 		},
+		{
+			desc:  "TLS with tls store containing certificates",
+			paths: []string{"services.yml", "with_tls_store_certificates.yml"},
+			expected: &dynamic.Configuration{
+				TLS: &dynamic.TLSConfiguration{
+					Certificates: []*tls.CertAndStores{
+						{
+							Certificate: tls.Certificate{
+								CertFile: tls.FileOrContent("-----BEGIN CERTIFICATE-----\n-----END CERTIFICATE-----"),
+								KeyFile:  tls.FileOrContent("-----BEGIN PRIVATE KEY-----\n-----END PRIVATE KEY-----"),
+							},
+							Stores: []string{"default"},
+						},
+					},
+					Stores: map[string]tls.Store{
+						"default": {},
+					},
+				},
+				UDP: &dynamic.UDPConfiguration{
+					Routers:  map[string]*dynamic.UDPRouter{},
+					Services: map[string]*dynamic.UDPService{},
+				},
+				TCP: &dynamic.TCPConfiguration{
+					Routers:     map[string]*dynamic.TCPRouter{},
+					Middlewares: map[string]*dynamic.TCPMiddleware{},
+					Services:    map[string]*dynamic.TCPService{},
+				},
+				HTTP: &dynamic.HTTPConfiguration{
+					Routers: map[string]*dynamic.Router{
+						"default-test-route-6b204d94623b3df4370c": {
+							EntryPoints: []string{"web"},
+							Service:     "default-test-route-6b204d94623b3df4370c",
+							Rule:        "Host(`foo.com`) && PathPrefix(`/bar`)",
+							Priority:    12,
+							TLS:         &dynamic.RouterTLSConfig{},
+						},
+					},
+					Middlewares: map[string]*dynamic.Middleware{},
+					Services: map[string]*dynamic.Service{
+						"default-test-route-6b204d94623b3df4370c": {
+							LoadBalancer: &dynamic.ServersLoadBalancer{
+								Servers: []dynamic.Server{
+									{
+										URL: "http://10.10.0.1:80",
+									},
+									{
+										URL: "http://10.10.0.2:80",
+									},
+								},
+								PassHostHeader: Bool(true),
+							},
+						},
+					},
+					ServersTransports: map[string]*dynamic.ServersTransport{},
+				},
+			},
+		},
 		{
 			desc:  "TLS with tls store default two times",
 			paths: []string{"services.yml", "with_tls_store.yml", "with_default_tls_store.yml"},

pkg/provider/kubernetes/crd/traefik/v1alpha1/ingressroute.go

@@ -13,72 +13,72 @@ type IngressRouteSpec struct {
 	Routes []Route `json:"routes"`
 	// EntryPoints defines the list of entry point names to bind to.
 	// Entry points have to be configured in the static configuration.
-	// More info: https://doc.traefik.io/traefik/v2.7/routing/entrypoints/
+	// More info: https://doc.traefik.io/traefik/v2.8/routing/entrypoints/
 	// Default: all.
 	EntryPoints []string `json:"entryPoints,omitempty"`
 	// TLS defines the TLS configuration.
-	// More info: https://doc.traefik.io/traefik/v2.7/routing/routers/#tls
+	// More info: https://doc.traefik.io/traefik/v2.8/routing/routers/#tls
 	TLS *TLS `json:"tls,omitempty"`
 }
 
 // Route holds the HTTP route configuration.
 type Route struct {
 	// Match defines the router's rule.
-	// More info: https://doc.traefik.io/traefik/v2.7/routing/routers/#rule
+	// More info: https://doc.traefik.io/traefik/v2.8/routing/routers/#rule
 	Match string `json:"match"`
 	// Kind defines the kind of the route.
 	// Rule is the only supported kind.
 	// +kubebuilder:validation:Enum=Rule
 	Kind string `json:"kind"`
 	// Priority defines the router's priority.
-	// More info: https://doc.traefik.io/traefik/v2.7/routing/routers/#priority
+	// More info: https://doc.traefik.io/traefik/v2.8/routing/routers/#priority
 	Priority int `json:"priority,omitempty"`
 	// Services defines the list of Service.
 	// It can contain any combination of TraefikService and/or reference to a Kubernetes Service.
 	Services []Service `json:"services,omitempty"`
 	// Middlewares defines the list of references to Middleware resources.
-	// More info: https://doc.traefik.io/traefik/v2.7/routing/providers/kubernetes-crd/#kind-middleware
+	// More info: https://doc.traefik.io/traefik/v2.8/routing/providers/kubernetes-crd/#kind-middleware
 	Middlewares []MiddlewareRef `json:"middlewares,omitempty"`
 }
 
 // TLS holds the TLS configuration.
-// More info: https://doc.traefik.io/traefik/v2.7/routing/routers/#tls
+// More info: https://doc.traefik.io/traefik/v2.8/routing/routers/#tls
 type TLS struct {
 	// SecretName is the name of the referenced Kubernetes Secret to specify the certificate details.
 	SecretName string `json:"secretName,omitempty"`
 	// Options defines the reference to a TLSOption, that specifies the parameters of the TLS connection.
 	// If not defined, the `default` TLSOption is used.
-	// More info: https://doc.traefik.io/traefik/v2.7/https/tls/#tls-options
+	// More info: https://doc.traefik.io/traefik/v2.8/https/tls/#tls-options
 	Options *TLSOptionRef `json:"options,omitempty"`
 	// Store defines the reference to the TLSStore, that will be used to store certificates.
 	// Please note that only `default` TLSStore can be used.
 	Store *TLSStoreRef `json:"store,omitempty"`
 	// CertResolver defines the name of the certificate resolver to use.
 	// Cert resolvers have to be configured in the static configuration.
-	// More info: https://doc.traefik.io/traefik/v2.7/https/acme/#certificate-resolvers
+	// More info: https://doc.traefik.io/traefik/v2.8/https/acme/#certificate-resolvers
 	CertResolver string `json:"certResolver,omitempty"`
 	// Domains defines the list of domains that will be used to issue certificates.
-	// More info: https://doc.traefik.io/traefik/v2.7/routing/routers/#domains
+	// More info: https://doc.traefik.io/traefik/v2.8/routing/routers/#domains
 	Domains []types.Domain `json:"domains,omitempty"`
 }
 
 // TLSOptionRef is a reference to a TLSOption resource.
 type TLSOptionRef struct {
 	// Name defines the name of the referenced TLSOption.
-	// More info: https://doc.traefik.io/traefik/v2.7/routing/providers/kubernetes-crd/#kind-tlsoption
+	// More info: https://doc.traefik.io/traefik/v2.8/routing/providers/kubernetes-crd/#kind-tlsoption
 	Name string `json:"name"`
 	// Namespace defines the namespace of the referenced TLSOption.
-	// More info: https://doc.traefik.io/traefik/v2.7/routing/providers/kubernetes-crd/#kind-tlsoption
+	// More info: https://doc.traefik.io/traefik/v2.8/routing/providers/kubernetes-crd/#kind-tlsoption
 	Namespace string `json:"namespace,omitempty"`
 }
 
 // TLSStoreRef is a reference to a TLSStore resource.
 type TLSStoreRef struct {
 	// Name defines the name of the referenced TLSStore.
-	// More info: https://doc.traefik.io/traefik/v2.7/routing/providers/kubernetes-crd/#kind-tlsstore
+	// More info: https://doc.traefik.io/traefik/v2.8/routing/providers/kubernetes-crd/#kind-tlsstore
 	Name string `json:"name"`
 	// Namespace defines the namespace of the referenced TLSStore.
-	// More info: https://doc.traefik.io/traefik/v2.7/routing/providers/kubernetes-crd/#kind-tlsstore
+	// More info: https://doc.traefik.io/traefik/v2.8/routing/providers/kubernetes-crd/#kind-tlsstore
 	Namespace string `json:"namespace,omitempty"`
 }
 
@@ -95,7 +95,7 @@ type LoadBalancerSpec struct {
 	// Namespace defines the namespace of the referenced Kubernetes Service or TraefikService.
 	Namespace string `json:"namespace,omitempty"`
 	// Sticky defines the sticky sessions configuration.
-	// More info: https://doc.traefik.io/traefik/v2.7/routing/services/#sticky-sessions
+	// More info: https://doc.traefik.io/traefik/v2.8/routing/services/#sticky-sessions
 	Sticky *dynamic.Sticky `json:"sticky,omitempty"`
 	// Port defines the port of a Kubernetes Service.
 	// This can be a reference to a named port.

pkg/provider/kubernetes/crd/traefik/v1alpha1/ingressroutetcp.go

@@ -13,21 +13,21 @@ type IngressRouteTCPSpec struct {
 	Routes []RouteTCP `json:"routes"`
 	// EntryPoints defines the list of entry point names to bind to.
 	// Entry points have to be configured in the static configuration.
-	// More info: https://doc.traefik.io/traefik/v2.7/routing/entrypoints/
+	// More info: https://doc.traefik.io/traefik/v2.8/routing/entrypoints/
 	// Default: all.
 	EntryPoints []string `json:"entryPoints,omitempty"`
 	// TLS defines the TLS configuration on a layer 4 / TCP Route.
-	// More info: https://doc.traefik.io/traefik/v2.7/routing/routers/#tls_1
+	// More info: https://doc.traefik.io/traefik/v2.8/routing/routers/#tls_1
 	TLS *TLSTCP `json:"tls,omitempty"`
 }
 
 // RouteTCP holds the TCP route configuration.
 type RouteTCP struct {
 	// Match defines the router's rule.
-	// More info: https://doc.traefik.io/traefik/v2.7/routing/routers/#rule_1
+	// More info: https://doc.traefik.io/traefik/v2.8/routing/routers/#rule_1
 	Match string `json:"match"`
 	// Priority defines the router's priority.
-	// More info: https://doc.traefik.io/traefik/v2.7/routing/routers/#priority_1
+	// More info: https://doc.traefik.io/traefik/v2.8/routing/routers/#priority_1
 	Priority int `json:"priority,omitempty"`
 	// Services defines the list of TCP services.
 	Services []ServiceTCP `json:"services,omitempty"`
@@ -36,7 +36,7 @@ type RouteTCP struct {
 }
 
 // TLSTCP holds the TLS configuration for an IngressRouteTCP.
-// More info: https://doc.traefik.io/traefik/v2.7/routing/routers/#tls_1
+// More info: https://doc.traefik.io/traefik/v2.8/routing/routers/#tls_1
 type TLSTCP struct {
 	// SecretName is the name of the referenced Kubernetes Secret to specify the certificate details.
 	SecretName string `json:"secretName,omitempty"`
@@ -44,17 +44,17 @@ type TLSTCP struct {
 	Passthrough bool `json:"passthrough,omitempty"`
 	// Options defines the reference to a TLSOption, that specifies the parameters of the TLS connection.
 	// If not defined, the `default` TLSOption is used.
-	// More info: https://doc.traefik.io/traefik/v2.7/https/tls/#tls-options
+	// More info: https://doc.traefik.io/traefik/v2.8/https/tls/#tls-options
 	Options *ObjectReference `json:"options,omitempty"`
 	// Store defines the reference to the TLSStore, that will be used to store certificates.
 	// Please note that only `default` TLSStore can be used.
 	Store *ObjectReference `json:"store,omitempty"`
 	// CertResolver defines the name of the certificate resolver to use.
 	// Cert resolvers have to be configured in the static configuration.
-	// More info: https://doc.traefik.io/traefik/v2.7/https/acme/#certificate-resolvers
+	// More info: https://doc.traefik.io/traefik/v2.8/https/acme/#certificate-resolvers
 	CertResolver string `json:"certResolver,omitempty"`
 	// Domains defines the list of domains that will be used to issue certificates.
-	// More info: https://doc.traefik.io/traefik/v2.7/routing/routers/#domains
+	// More info: https://doc.traefik.io/traefik/v2.8/routing/routers/#domains
 	Domains []types.Domain `json:"domains,omitempty"`
 }
 
@@ -76,7 +76,7 @@ type ServiceTCP struct {
 	// A negative value means an infinite deadline (i.e. the reading capability is never closed).
 	TerminationDelay *int `json:"terminationDelay,omitempty"`
 	// ProxyProtocol defines the PROXY protocol configuration.
-	// More info: https://doc.traefik.io/traefik/v2.7/routing/services/#proxy-protocol
+	// More info: https://doc.traefik.io/traefik/v2.8/routing/services/#proxy-protocol
 	ProxyProtocol *dynamic.ProxyProtocol `json:"proxyProtocol,omitempty"`
 }
 

pkg/provider/kubernetes/crd/traefik/v1alpha1/ingressrouteudp.go

@@ -11,7 +11,7 @@ type IngressRouteUDPSpec struct {
 	Routes []RouteUDP `json:"routes"`
 	// EntryPoints defines the list of entry point names to bind to.
 	// Entry points have to be configured in the static configuration.
-	// More info: https://doc.traefik.io/traefik/v2.7/routing/entrypoints/
+	// More info: https://doc.traefik.io/traefik/v2.8/routing/entrypoints/
 	// Default: all.
 	EntryPoints []string `json:"entryPoints,omitempty"`
 }

pkg/provider/kubernetes/crd/traefik/v1alpha1/middleware.go

@@ -12,7 +12,7 @@ import (
 // +kubebuilder:storageversion
 
 // Middleware is the CRD implementation of a Traefik Middleware.
-// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/overview/
+// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/overview/
 type Middleware struct {
 	metav1.TypeMeta `json:",inline"`
 	// Standard object's metadata.
@@ -43,7 +43,7 @@ type MiddlewareSpec struct {
 	ForwardAuth       *ForwardAuth               `json:"forwardAuth,omitempty"`
 	InFlightReq       *dynamic.InFlightReq       `json:"inFlightReq,omitempty"`
 	Buffering         *dynamic.Buffering         `json:"buffering,omitempty"`
-	CircuitBreaker    *dynamic.CircuitBreaker    `json:"circuitBreaker,omitempty"`
+	CircuitBreaker    *CircuitBreaker            `json:"circuitBreaker,omitempty"`
 	Compress          *dynamic.Compress          `json:"compress,omitempty"`
 	PassTLSClientCert *dynamic.PassTLSClientCert `json:"passTLSClientCert,omitempty"`
 	Retry             *Retry                     `json:"retry,omitempty"`
@@ -57,7 +57,7 @@ type MiddlewareSpec struct {
 
 // ErrorPage holds the custom error middleware configuration.
 // This middleware returns a custom page in lieu of the default, according to configured ranges of HTTP Status codes.
-// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/errorpages/
+// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/errorpages/
 type ErrorPage struct {
 	// Status defines which status or range of statuses should result in an error page.
 	// It can be either a status code as a number (500),
@@ -66,7 +66,7 @@ type ErrorPage struct {
 	// or a combination of the two (404,418,500-599).
 	Status []string `json:"status,omitempty"`
 	// Service defines the reference to a Kubernetes Service that will serve the error page.
-	// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/errorpages/#service
+	// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/errorpages/#service
 	Service Service `json:"service,omitempty"`
 	// Query defines the URL for the error page (hosted by service).
 	// The {status} variable can be used in order to insert the status code in the URL.
@@ -75,9 +75,23 @@ type ErrorPage struct {
 
 // +k8s:deepcopy-gen=true
 
+// CircuitBreaker holds the circuit breaker configuration.
+type CircuitBreaker struct {
+	// Expression is the condition that triggers the tripped state.
+	Expression string `json:"expression,omitempty" toml:"expression,omitempty" yaml:"expression,omitempty" export:"true"`
+	// CheckPeriod is the interval between successive checks of the circuit breaker condition (when in standby state).
+	CheckPeriod *intstr.IntOrString `json:"checkPeriod,omitempty" toml:"checkPeriod,omitempty" yaml:"checkPeriod,omitempty" export:"true"`
+	// FallbackDuration is the duration for which the circuit breaker will wait before trying to recover (from a tripped state).
+	FallbackDuration *intstr.IntOrString `json:"fallbackDuration,omitempty" toml:"fallbackDuration,omitempty" yaml:"fallbackDuration,omitempty" export:"true"`
+	// RecoveryDuration is the duration for which the circuit breaker will try to recover (as soon as it is in recovering state).
+	RecoveryDuration *intstr.IntOrString `json:"recoveryDuration,omitempty" toml:"recoveryDuration,omitempty" yaml:"recoveryDuration,omitempty" export:"true"`
+}
+
+// +k8s:deepcopy-gen=true
+
 // Chain holds the configuration of the chain middleware.
 // This middleware enables to define reusable combinations of other pieces of middleware.
-// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/chain/
+// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/chain/
 type Chain struct {
 	// Middlewares is the list of MiddlewareRef which composes the chain.
 	Middlewares []MiddlewareRef `json:"middlewares,omitempty"`
@@ -87,7 +101,7 @@ type Chain struct {
 
 // BasicAuth holds the basic auth middleware configuration.
 // This middleware restricts access to your services to known users.
-// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/basicauth/
+// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/basicauth/
 type BasicAuth struct {
 	// Secret is the name of the referenced Kubernetes Secret containing user credentials.
 	Secret string `json:"secret,omitempty"`
@@ -98,7 +112,7 @@ type BasicAuth struct {
 	// Default: false.
 	RemoveHeader bool `json:"removeHeader,omitempty"`
 	// HeaderField defines a header field to store the authenticated user.
-	// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/basicauth/#headerfield
+	// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/basicauth/#headerfield
 	HeaderField string `json:"headerField,omitempty"`
 }
 
@@ -106,7 +120,7 @@ type BasicAuth struct {
 
 // DigestAuth holds the digest auth middleware configuration.
 // This middleware restricts access to your services to known users.
-// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/digestauth/
+// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/digestauth/
 type DigestAuth struct {
 	// Secret is the name of the referenced Kubernetes Secret containing user credentials.
 	Secret string `json:"secret,omitempty"`
@@ -116,7 +130,7 @@ type DigestAuth struct {
 	// Default: traefik.
 	Realm string `json:"realm,omitempty"`
 	// HeaderField defines a header field to store the authenticated user.
-	// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/basicauth/#headerfield
+	// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/basicauth/#headerfield
 	HeaderField string `json:"headerField,omitempty"`
 }
 
@@ -124,7 +138,7 @@ type DigestAuth struct {
 
 // ForwardAuth holds the forward auth middleware configuration.
 // This middleware delegates the request authentication to a Service.
-// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/forwardauth/
+// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/forwardauth/
 type ForwardAuth struct {
 	// Address defines the authentication server address.
 	Address string `json:"address,omitempty"`
@@ -133,7 +147,7 @@ type ForwardAuth struct {
 	// AuthResponseHeaders defines the list of headers to copy from the authentication server response and set on forwarded request, replacing any existing conflicting headers.
 	AuthResponseHeaders []string `json:"authResponseHeaders,omitempty"`
 	// AuthResponseHeadersRegex defines the regex to match headers to copy from the authentication server response and set on forwarded request, after stripping all headers that match the regex.
-	// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/forwardauth/#authresponseheadersregex
+	// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/forwardauth/#authresponseheadersregex
 	AuthResponseHeadersRegex string `json:"authResponseHeadersRegex,omitempty"`
 	// AuthRequestHeaders defines the list of the headers to copy from the request to the authentication server.
 	// If not set or empty then all request headers are passed.
@@ -159,7 +173,7 @@ type ClientTLS struct {
 
 // RateLimit holds the rate limit configuration.
 // This middleware ensures that services will receive a fair amount of requests, and allows one to define what fair is.
-// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/ratelimit/
+// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/ratelimit/
 type RateLimit struct {
 	// Average is the maximum rate, by default in requests/s, allowed for the given source.
 	// It defaults to 0, which means no rate limiting.
@@ -183,7 +197,7 @@ type RateLimit struct {
 // Retry holds the retry middleware configuration.
 // This middleware reissues requests a given number of times to a backend server if that server does not reply.
 // As soon as the server answers, the middleware stops retrying, regardless of the response status.
-// More info: https://doc.traefik.io/traefik/v2.7/middlewares/http/retry/
+// More info: https://doc.traefik.io/traefik/v2.8/middlewares/http/retry/
 type Retry struct {
 	// Attempts defines how many times the request should be retried.
 	Attempts int `json:"attempts,omitempty"`

pkg/provider/kubernetes/crd/traefik/v1alpha1/middlewaretcp.go

@@ -9,7 +9,7 @@ import (
 // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object
 
 // MiddlewareTCP is the CRD implementation of a Traefik TCP middleware.
-// More info: https://doc.traefik.io/traefik/v2.7/middlewares/overview/
+// More info: https://doc.traefik.io/traefik/v2.8/middlewares/overview/
 type MiddlewareTCP struct {
 	metav1.TypeMeta `json:",inline"`
 	// Standard object's metadata.

pkg/provider/kubernetes/crd/traefik/v1alpha1/serverstransport.go

@@ -12,7 +12,7 @@ import (
 // ServersTransport is the CRD implementation of a ServersTransport.
 // If no serversTransport is specified, the default@internal will be used.
 // The default@internal serversTransport is created from the static configuration.
-// More info: https://doc.traefik.io/traefik/v2.7/routing/services/#serverstransport_1
+// More info: https://doc.traefik.io/traefik/v2.8/routing/services/#serverstransport_1
 type ServersTransport struct {
 	metav1.TypeMeta `json:",inline"`
 	// Standard object's metadata.

pkg/provider/kubernetes/crd/traefik/v1alpha1/service.go

@@ -13,7 +13,7 @@ import (
 // TraefikService object allows to:
 //  - Apply weight to Services on load-balancing
 //  - Mirror traffic on services
-// More info: https://doc.traefik.io/traefik/v2.7/routing/providers/kubernetes-crd/#kind-traefikservice
+// More info: https://doc.traefik.io/traefik/v2.8/routing/providers/kubernetes-crd/#kind-traefikservice
 type TraefikService struct {
 	metav1.TypeMeta `json:",inline"`
 	// Standard object's metadata.
@@ -49,7 +49,7 @@ type TraefikServiceSpec struct {
 // +k8s:deepcopy-gen=true
 
 // Mirroring holds the mirroring service configuration.
-// More info: https://doc.traefik.io/traefik/v2.7/routing/services/#mirroring-service
+// More info: https://doc.traefik.io/traefik/v2.8/routing/services/#mirroring-service
 type Mirroring struct {
 	LoadBalancerSpec `json:",inline"`
 
@@ -75,11 +75,11 @@ type MirrorService struct {
 // +k8s:deepcopy-gen=true
 
 // WeightedRoundRobin holds the weighted round-robin configuration.
-// More info: https://doc.traefik.io/traefik/v2.7/routing/services/#weighted-round-robin-service
+// More info: https://doc.traefik.io/traefik/v2.8/routing/services/#weighted-round-robin-service
 type WeightedRoundRobin struct {
 	// Services defines the list of Kubernetes Service and/or TraefikService to load-balance, with weight.
 	Services []Service `json:"services,omitempty"`
 	// Sticky defines whether sticky sessions are enabled.
-	// More info: https://doc.traefik.io/traefik/v2.7/routing/providers/kubernetes-crd/#stickiness-and-load-balancing
+	// More info: https://doc.traefik.io/traefik/v2.8/routing/providers/kubernetes-crd/#stickiness-and-load-balancing
 	Sticky *dynamic.Sticky `json:"sticky,omitempty"`
 }

pkg/provider/kubernetes/crd/traefik/v1alpha1/tlsoption.go

@@ -9,7 +9,7 @@ import (
 // +kubebuilder:storageversion
 
 // TLSOption is the CRD implementation of a Traefik TLS Option, allowing to configure some parameters of the TLS connection.
-// More info: https://doc.traefik.io/traefik/v2.7/https/tls/#tls-options
+// More info: https://doc.traefik.io/traefik/v2.8/https/tls/#tls-options
 type TLSOption struct {
 	metav1.TypeMeta `json:",inline"`
 	// Standard object's metadata.
@@ -32,10 +32,10 @@ type TLSOptionSpec struct {
 	// Default: None.
 	MaxVersion string `json:"maxVersion,omitempty"`
 	// CipherSuites defines the list of supported cipher suites for TLS versions up to TLS 1.2.
-	// More info: https://doc.traefik.io/traefik/v2.7/https/tls/#cipher-suites
+	// More info: https://doc.traefik.io/traefik/v2.8/https/tls/#cipher-suites
 	CipherSuites []string `json:"cipherSuites,omitempty"`
 	// CurvePreferences defines the preferred elliptic curves in a specific order.
-	// More info: https://doc.traefik.io/traefik/v2.7/https/tls/#curve-preferences
+	// More info: https://doc.traefik.io/traefik/v2.8/https/tls/#curve-preferences
 	CurvePreferences []string `json:"curvePreferences,omitempty"`
 	// ClientAuth defines the server's policy for TLS Client Authentication.
 	ClientAuth ClientAuth `json:"clientAuth,omitempty"`
@@ -45,7 +45,7 @@ type TLSOptionSpec struct {
 	// It is enabled automatically when minVersion or maxVersion are set.
 	PreferServerCipherSuites bool `json:"preferServerCipherSuites,omitempty"`
 	// ALPNProtocols defines the list of supported application level protocols for the TLS handshake, in order of preference.
-	// More info: https://doc.traefik.io/traefik/v2.7/https/tls/#alpn-protocols
+	// More info: https://doc.traefik.io/traefik/v2.8/https/tls/#alpn-protocols
 	ALPNProtocols []string `json:"alpnProtocols,omitempty"`
 }
 

pkg/provider/kubernetes/crd/traefik/v1alpha1/tlsstore.go

@@ -11,7 +11,7 @@ import (
 // TLSStore is the CRD implementation of a Traefik TLS Store.
 // For the time being, only the TLSStore named default is supported.
 // This means that you cannot have two stores that are named default in different Kubernetes namespaces.
-// More info: https://doc.traefik.io/traefik/v2.7/https/tls/#certificates-stores
+// More info: https://doc.traefik.io/traefik/v2.8/https/tls/#certificates-stores
 type TLSStore struct {
 	metav1.TypeMeta `json:",inline"`
 	// Standard object's metadata.
@@ -26,13 +26,15 @@ type TLSStore struct {
 // TLSStoreSpec defines the desired state of a TLSStore.
 type TLSStoreSpec struct {
 	// DefaultCertificate defines the default certificate configuration.
-	DefaultCertificate DefaultCertificate `json:"defaultCertificate"`
+	DefaultCertificate *Certificate `json:"defaultCertificate,omitempty"`
+	// Certificates is a list of secret names, each secret holding a key/certificate pair to add to the store.
+	Certificates []Certificate `json:"certificates,omitempty"`
 }
 
 // +k8s:deepcopy-gen=true
 
-// DefaultCertificate holds the default certificate configuration.
-type DefaultCertificate struct {
+// Certificate holds a secret name for the TLSStore resource.
+type Certificate struct {
 	// SecretName is the name of the referenced Kubernetes Secret to specify the certificate details.
 	SecretName string `json:"secretName"`
 }

pkg/provider/kubernetes/crd/traefik/v1alpha1/zz_generated.deepcopy.go

@@ -53,6 +53,22 @@ func (in *BasicAuth) DeepCopy() *BasicAuth {
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *Certificate) DeepCopyInto(out *Certificate) {
+	*out = *in
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new Certificate.
+func (in *Certificate) DeepCopy() *Certificate {
+	if in == nil {
+		return nil
+	}
+	out := new(Certificate)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *Chain) DeepCopyInto(out *Chain) {
 	*out = *in
@@ -74,6 +90,37 @@ func (in *Chain) DeepCopy() *Chain {
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *CircuitBreaker) DeepCopyInto(out *CircuitBreaker) {
+	*out = *in
+	if in.CheckPeriod != nil {
+		in, out := &in.CheckPeriod, &out.CheckPeriod
+		*out = new(intstr.IntOrString)
+		**out = **in
+	}
+	if in.FallbackDuration != nil {
+		in, out := &in.FallbackDuration, &out.FallbackDuration
+		*out = new(intstr.IntOrString)
+		**out = **in
+	}
+	if in.RecoveryDuration != nil {
+		in, out := &in.RecoveryDuration, &out.RecoveryDuration
+		*out = new(intstr.IntOrString)
+		**out = **in
+	}
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new CircuitBreaker.
+func (in *CircuitBreaker) DeepCopy() *CircuitBreaker {
+	if in == nil {
+		return nil
+	}
+	out := new(CircuitBreaker)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *ClientAuth) DeepCopyInto(out *ClientAuth) {
 	*out = *in
@@ -111,22 +158,6 @@ func (in *ClientTLS) DeepCopy() *ClientTLS {
 	return out
 }
 
-// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
-func (in *DefaultCertificate) DeepCopyInto(out *DefaultCertificate) {
-	*out = *in
-	return
-}
-
-// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new DefaultCertificate.
-func (in *DefaultCertificate) DeepCopy() *DefaultCertificate {
-	if in == nil {
-		return nil
-	}
-	out := new(DefaultCertificate)
-	in.DeepCopyInto(out)
-	return out
-}
-
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *DigestAuth) DeepCopyInto(out *DigestAuth) {
 	*out = *in
@@ -714,8 +745,8 @@ func (in *MiddlewareSpec) DeepCopyInto(out *MiddlewareSpec) {
 	}
 	if in.CircuitBreaker != nil {
 		in, out := &in.CircuitBreaker, &out.CircuitBreaker
-		*out = new(dynamic.CircuitBreaker)
-		**out = **in
+		*out = new(CircuitBreaker)
+		(*in).DeepCopyInto(*out)
 	}
 	if in.Compress != nil {
 		in, out := &in.Compress, &out.Compress
@@ -1340,7 +1371,7 @@ func (in *TLSStore) DeepCopyInto(out *TLSStore) {
 	*out = *in
 	out.TypeMeta = in.TypeMeta
 	in.ObjectMeta.DeepCopyInto(&out.ObjectMeta)
-	out.Spec = in.Spec
+	in.Spec.DeepCopyInto(&out.Spec)
 	return
 }
 
@@ -1414,7 +1445,16 @@ func (in *TLSStoreRef) DeepCopy() *TLSStoreRef {
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *TLSStoreSpec) DeepCopyInto(out *TLSStoreSpec) {
 	*out = *in
-	out.DefaultCertificate = in.DefaultCertificate
+	if in.DefaultCertificate != nil {
+		in, out := &in.DefaultCertificate, &out.DefaultCertificate
+		*out = new(Certificate)
+		**out = **in
+	}
+	if in.Certificates != nil {
+		in, out := &in.Certificates, &out.Certificates
+		*out = make([]Certificate, len(*in))
+		copy(*out, *in)
+	}
 	return
 }
 

pkg/provider/kv/consul/consul.go

@@ -4,30 +4,80 @@ import (
 	"errors"
 
 	"github.com/kvtools/valkeyrie/store"
+	"github.com/traefik/traefik/v2/pkg/log"
 	"github.com/traefik/traefik/v2/pkg/provider"
 	"github.com/traefik/traefik/v2/pkg/provider/kv"
 )
 
+// providerName is the Consul provider name.
+const providerName = "consul"
+
 var _ provider.Provider = (*Provider)(nil)
 
-// Provider holds configurations of the provider.
-type Provider struct {
+// ProviderBuilder is responsible for constructing namespaced instances of the Consul provider.
+type ProviderBuilder struct {
 	kv.Provider `export:"true"`
+
+	// Deprecated: use Namespaces instead.
+	Namespace  string   `description:"Sets the namespace used to discover the configuration (Consul Enterprise only)." json:"namespace,omitempty" toml:"namespace,omitempty" yaml:"namespace,omitempty"`
+	Namespaces []string `description:"Sets the namespaces used to discover the configuration (Consul Enterprise only)." json:"namespaces,omitempty" toml:"namespaces,omitempty" yaml:"namespaces,omitempty"`
 }
 
 // SetDefaults sets the default values.
-func (p *Provider) SetDefaults() {
+func (p *ProviderBuilder) SetDefaults() {
 	p.Provider.SetDefaults()
 	p.Endpoints = []string{"127.0.0.1:8500"}
 }
 
+// BuildProviders builds Consul provider instances for the given namespaces configuration.
+func (p *ProviderBuilder) BuildProviders() []*Provider {
+	// We can warn about that, because we've already made sure before that
+	// Namespace and Namespaces are mutually exclusive.
+	if p.Namespace != "" {
+		log.WithoutContext().Warnf("Namespace option is deprecated, please use the Namespaces option instead.")
+	}
+
+	if len(p.Namespaces) == 0 {
+		return []*Provider{{
+			Provider: p.Provider,
+			name:     providerName,
+			// p.Namespace could very well be empty.
+			namespace: p.Namespace,
+		}}
+	}
+
+	var providers []*Provider
+	for _, namespace := range p.Namespaces {
+		providers = append(providers, &Provider{
+			Provider:  p.Provider,
+			name:      providerName + "-" + namespace,
+			namespace: namespace,
+		})
+	}
+
+	return providers
+}
+
+// Provider holds configurations of the provider.
+type Provider struct {
+	kv.Provider
+
+	name      string
+	namespace string
+}
+
 // Init the provider.
 func (p *Provider) Init() error {
 	// Wildcard namespace allows fetching KV values from any namespace for recursive requests (see https://www.consul.io/api/kv#ns).
 	// As we are not supporting multiple namespaces at the same time, wildcard namespace is not allowed.
-	if p.Namespace == "*" {
+	if p.namespace == "*" {
 		return errors.New("wildcard namespace is not supported")
 	}
 
-	return p.Provider.Init(store.CONSUL, "consul")
+	// In case they didn't initialize with BuildProviders.
+	if p.name == "" {
+		p.name = providerName
+	}
+
+	return p.Provider.Init(store.CONSUL, p.name, p.namespace)
 }

pkg/provider/kv/consul/consul_test.go

@@ -0,0 +1,59 @@
+package consul
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestNamespaces(t *testing.T) {
+	testCases := []struct {
+		desc               string
+		namespace          string
+		namespaces         []string
+		expectedNamespaces []string
+	}{
+		{
+			desc:               "no defined namespaces",
+			expectedNamespaces: []string{""},
+		},
+		{
+			desc:               "deprecated: use of defined namespace",
+			namespace:          "test-ns",
+			expectedNamespaces: []string{"test-ns"},
+		},
+		{
+			desc:               "use of 1 defined namespaces",
+			namespaces:         []string{"test-ns"},
+			expectedNamespaces: []string{"test-ns"},
+		},
+		{
+			desc:               "use of multiple defined namespaces",
+			namespaces:         []string{"test-ns1", "test-ns2", "test-ns3", "test-ns4"},
+			expectedNamespaces: []string{"test-ns1", "test-ns2", "test-ns3", "test-ns4"},
+		},
+	}
+
+	for _, test := range testCases {
+		test := test
+
+		t.Run(test.desc, func(t *testing.T) {
+			t.Parallel()
+
+			pb := &ProviderBuilder{
+				Namespace:  test.namespace,
+				Namespaces: test.namespaces,
+			}
+
+			assert.Equal(t, test.expectedNamespaces, extractNSFromProvider(pb.BuildProviders()))
+		})
+	}
+}
+
+func extractNSFromProvider(providers []*Provider) []string {
+	res := make([]string, len(providers))
+	for i, p := range providers {
+		res[i] = p.namespace
+	}
+	return res
+}

pkg/provider/kv/etcd/etcd.go

@@ -21,5 +21,5 @@ func (p *Provider) SetDefaults() {
 
 // Init the provider.
 func (p *Provider) Init() error {
-	return p.Provider.Init(store.ETCDV3, "etcd")
+	return p.Provider.Init(store.ETCDV3, "etcd", "")
 }