227 lines
8.1 KiB
Bash
227 lines
8.1 KiB
Bash
#!/bin/bash -e
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#
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# TODO
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# * on startup resolveNodes.sh usually resolves just itself and 'ctdb reloadnodes' must be called on some node
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# * maybe remove ctdb-volatile
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# * 'net ads info' is not a proper join status check
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# Loosely based on https://github.com/fjudith/docker-samba-join-ad/tree/master/sssd
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if [ "$1" = "ctdb" ]; then
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# Run ctdbd node and skip supervisord entirely
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if [ -z "$CLUSTER_NODE_NAMES" ]; then
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echo 'The CTDB cluster nodes DNS names CLUSTER_NODE_NAMES must be provided'
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exit 1
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fi
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if [ -z "$CLUSTER_SYSDIR_SHARED" ]; then
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echo 'System persistent directory shared across the cluster CLUSTER_SYSDIR_SHARED must be provided'
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exit 1
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fi
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if [ -z "$CLUSTER_SYSDIR_LOCAL" ]; then
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echo 'System persistent directory local to the node CLUSTER_SYSDIR_LOCAL must be provided'
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exit 1
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fi
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CLUSTER_LOG_LEVEL="${CLUSTER_LOG_LEVEL:-NOTICE}"
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echo "Starting a CTDB node"
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rm -f /etc/ctdb/ctdb.conf
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# For CTDB variables see https://ctdb.samba.org/manpages/ctdb.conf.5.html
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echo [logging] >> /etc/ctdb/ctdb.conf
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echo log level = $CLUSTER_LOG_LEVEL >> /etc/ctdb/ctdb.conf
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echo [cluster] >> /etc/ctdb/ctdb.conf
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echo 'nodes list = !/usr/bin/bash /resolveNodes.sh '"$CLUSTER_NODE_NAMES" >> /etc/ctdb/ctdb.conf
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# Locking seems broken on objectivefs
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#mkdir -p "$CLUSTER_SYSDIR_SHARED/ctdb"
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#echo cluster lock = $CLUSTER_SYSDIR_SHARED/ctdb/ctdb.lock >> /etc/ctdb/ctdb.conf
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mkdir -p "$CLUSTER_SYSDIR_LOCAL/ctdb"
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mkdir -p "$CLUSTER_SYSDIR_LOCAL/ctdb-volatile"
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echo [database] >> /etc/ctdb/ctdb.conf
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echo persistent database directory = $CLUSTER_SYSDIR_LOCAL/ctdb >> /etc/ctdb/ctdb.conf
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echo volatile database directory = $CLUSTER_SYSDIR_LOCAL/ctdb-volatile >> /etc/ctdb/ctdb.conf
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# We do not have enough privileges in a container for setting scheduling
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echo [legacy] >> /etc/ctdb/ctdb.conf
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echo realtime scheduling = false >> /etc/ctdb/ctdb.conf
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# Option --socket= is no longer supported for ctdbd
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mkdir -p "$CLUSTER_SYSDIR_LOCAL/ctdb-run"
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rm -rf /run/ctdb
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ln -s "$CLUSTER_SYSDIR_LOCAL/ctdb-run" /run/ctdb
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# Wait a little bit so we see all/most peer nodes through DNS (resolveNodes.sh)
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sleep 15
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# We cannot run as PID 1 due to orphans (see https://lists.samba.org/archive/samba-technical/2021-July/136753.html)
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echo 'Restarting CTDB using supervisord'
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cp /root/crontab.ctdb /etc/crontab
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exec /usr/bin/supervisord -c /root/supervisord.ctdb.conf
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fi
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if [ -z "$NETBIOS_NAME" ]; then
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NETBIOS_NAME=$(hostname -s | tr [a-z] [A-Z])
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else
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NETBIOS_NAME=$(echo $NETBIOS_NAME | tr [a-z] [A-Z])
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fi
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REALM=$(echo "$REALM" | tr [a-z] [A-Z])
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DOMAIN=$(echo "$REALM" | tr [A-Z] [a-z])
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if [ ! -f /etc/timezone ] && [ ! -z "$TZ" ]; then
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echo 'Set timezone'
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rm /etc/localtime
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cp /usr/share/zoneinfo/$TZ /etc/localtime
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echo $TZ >/etc/timezone
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fi
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# Clustering
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if [ -z "$CLUSTER_NAME" ]; then
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CTDB_ENABLED=false
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ETC_DIR=/etc/samba
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PRINTERDRIVERS_DIR=/var/lib/samba/printerdrivers
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mkdir -p "$PRINTERDRIVERS_DIR"
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else
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if [ -z "$CLUSTER_SYSDIR_SHARED" ]; then
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echo 'System persistent directory shared across the cluster CLUSTER_SYSDIR_SHARED must be provided'
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exit 1
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fi
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if [ -z "$CLUSTER_SYSDIR_LOCAL" ]; then
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echo 'System persistent directory local to the node CLUSTER_SYSDIR_LOCAL must be provided'
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exit 1
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fi
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echo "Starting as a cluster"
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CTDB_ENABLED=true
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mkdir -p "$CLUSTER_SYSDIR_SHARED/etc"
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mkdir -p "$CLUSTER_SYSDIR_SHARED/cups"
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ln -s "$CLUSTER_SYSDIR_SHARED/cups" /etc/cups-persist
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mkdir -p "$CLUSTER_SYSDIR_SHARED/printerdrivers"
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ETC_DIR=$CLUSTER_SYSDIR_SHARED/etc
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PRINTERDRIVERS_DIR=$CLUSTER_SYSDIR_SHARED/printerdrivers
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NETBIOS_NAME=$CLUSTER_NAME
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# HACK: Make volatile accessible from the CTDB container
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rm -rf /var/lib/ctdb/volatile
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ln -s "$CLUSTER_SYSDIR_LOCAL/ctdb-volatile" /var/lib/ctdb/volatile
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fi
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if [ ! -f "$ETC_DIR/krb5.keytab" ]; then
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if [ ! -f /run/secrets/$ADMIN_PASSWORD_SECRET ]; then
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echo 'Cannot read secret $ADMIN_PASSWORD_SECRET in /run/secrets'
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exit 1
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fi
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ADMIN_PASSWORD=$(cat /run/secrets/$ADMIN_PASSWORD_SECRET)
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rm -f "$ETC_DIR/smb.conf" /etc/krb5.conf
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if [ "$CTDB_ENABLED" = "true" ]; then
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PREV_HOSTNAME=`hostname`
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hostname -b "$CLUSTER_NAME.$DOMAIN"
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fi
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# realm join is broken as it requires --privileged but difficult to add for swarm
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# so it can execute /usr/sbin/adcli. Therefore we execute it directly and create
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# the /etc/krb5.conf and /etc/sssd/sssd.conf manually
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# echo $ADMIN_PASSWORD|realm join -v $REALM --user=$ADMIN_ACCOUNT
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echo $ADMIN_PASSWORD|/usr/sbin/adcli join --verbose --domain $DOMAIN --domain-realm $REALM --login-type user --login-user $ADMIN_ACCOUNT --stdin-password
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if [ "$CTDB_ENABLED" = "true" ]; then
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hostname -b "$PREV_HOSTNAME"
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fi
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mv /etc/krb5.keytab "$ETC_DIR/"
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fi
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if [ ! -L /etc/krb5.keytab ]; then
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ln -s "$ETC_DIR/krb5.keytab" /etc/krb5.keytab
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fi
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echo -e "[libdefaults]\ndefault_realm = $REALM\ndns_lookup_realm = false\ndns_lookup_kdc = true" > /etc/krb5.conf
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mkdir -p -m 700 "$ETC_DIR/conf.d"
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for file in /etc/samba/smb.conf; do
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sed -e "s:{{ ALLOW_DNS_UPDATES }}:$ALLOW_DNS_UPDATES:" \
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-e "s:{{ BIND_INTERFACES_ONLY }}:$BIND_INTERFACES_ONLY:" \
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-e "s+{{ INTERFACES }}+$INTERFACES+" \
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-e "s:{{ LOG_LEVEL }}:$LOG_LEVEL:" \
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-e "s:{{ NETBIOS_NAME }}:$NETBIOS_NAME:" \
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-e "s:{{ REALM }}:$REALM:" \
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-e "s:{{ KEYTAB_PATH }}:$ETC_DIR/krb5.keytab:" \
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-e "s:{{ PRINTERDRIVERS_DIR }}:$PRINTERDRIVERS_DIR:" \
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-e "s:{{ SERVER_STRING }}:$SERVER_STRING:" \
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-e "s:{{ WINBIND_USE_DEFAULT_DOMAIN }}:$WINBIND_USE_DEFAULT_DOMAIN:" \
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-e "s:{{ WORKGROUP }}:$WORKGROUP:" \
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/root/$(basename $file).j2 > $file
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done
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for file in "$ETC_DIR"/conf.d/*.conf; do
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echo "include = $file" >> /etc/samba/smb.conf
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done
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if [ "$CTDB_ENABLED" = "true" ]; then
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echo "clustering = yes" >> /etc/samba/smb.conf
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echo "ctdbd socket = $CLUSTER_SYSDIR_LOCAL/ctdb-run/ctdbd.socket" >> /etc/samba/smb.conf
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fi
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#echo "Activating home directory auto-creation"
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#echo "session required pam_mkhomedir.so skel=/etc/skel/ umask=0022" | tee -a /etc/pam.d/common-session
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# Join
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if ! net ads testjoin; then
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if [ ! -f /run/secrets/$ADMIN_PASSWORD_SECRET ]; then
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echo 'Cannot read secret $ADMIN_PASSWORD_SECRET in /run/secrets'
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exit 1
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fi
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ADMIN_PASSWORD=$(cat /run/secrets/$ADMIN_PASSWORD_SECRET)
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echo "Joining domain using net ads"
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mkdir -p /var/lib/samba/private
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# Join
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net ads join --no-dns-updates -U"$ADMIN_ACCOUNT"%"$ADMIN_PASSWORD"
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((/usr/bin/supervisord -c /etc/supervisor/conf.d/supervisord.conf -j /tmp/sp.pid)&)
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sleep 30
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# Allow adding printer drivers for Administrator
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# Note: These commands require running winbind that resolves the group name and dcerpcd that accesses printers list
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rpcclient -P -c enumprinters 127.0.0.1
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chgrp -R "Domain Admins" "$PRINTERDRIVERS_DIR"
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chmod -R 775 "$PRINTERDRIVERS_DIR"
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setfacl -R -m "d:g:Domain Admins:rwx" "$PRINTERDRIVERS_DIR"
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# HACK: In Samba 4.16 and above shares are not visible otherwise
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if [ "$CTDB_ENABLED" = "false" ]; then
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smbclient -L 127.0.0.1 -P
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chmod 666 /var/lib/samba/share_info.tdb
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fi
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kill `cat /tmp/sp.pid`
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fi
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# CUPS persistence and permissions
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mkdir -p /etc/cups-persist/ppd
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touch /etc/cups-persist/printers.conf
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sed -i -E "s:^(lpadmin\:x\:[0-9]+\:)(.*)$:\1$ADMIN_ACCOUNT\,\2:" /etc/group
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sed -i -E "s:^(lpadmin\:x\:[0-9]+\:)(.*)$:\1$ADMIN_ACCOUNT\,\2:" /etc/group
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if [ -z "$CUPS_TRUSTED_PROXY" ]; then
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sed -E -i "s:(Order allow\,deny):\1\n Allow all:" /etc/cups/cupsd.conf
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else
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sed -E -i "s:(Order allow\,deny):\1\n Allow $CUPS_TRUSTED_PROXY:" /etc/cups/cupsd.conf
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echo -e "\n" >> /etc/cups/cupsd.conf
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echo "DefaultEncryption Never" >> /etc/cups/cupsd.conf
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fi
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# Samba exporter pipes
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pipe_permissions="660"
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pipe_owner="root:samba-exporter"
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request_pipe_file="/run/samba_exporter.request.pipe"
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response_pipe_file="/run/samba_exporter.response.pipe"
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rm -f "$request_pipe_file"
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mkfifo "$request_pipe_file"
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chown "$pipe_owner" "$request_pipe_file"
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chmod "$pipe_permissions" "$request_pipe_file"
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rm -f "$response_pipe_file"
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mkfifo "$response_pipe_file"
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chown "$pipe_owner" "$response_pipe_file"
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chmod "$pipe_permissions" "$response_pipe_file"
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echo 'Restarting Samba using supervisord'
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cp /root/crontab.samba /etc/crontab
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exec /usr/bin/supervisord -c /root/supervisord.samba.conf
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