Files
samba-member/entrypoint.sh
2026-03-03 22:18:19 +00:00

173 lines
6.1 KiB
Bash

#!/bin/bash -e
# Loosely based on https://github.com/fjudith/docker-samba-join-ad/tree/master/sssd
if [ -z "$NETBIOS_NAME" ]; then
NETBIOS_NAME=$(hostname -s | tr [a-z] [A-Z])
else
NETBIOS_NAME=$(echo $NETBIOS_NAME | tr [a-z] [A-Z])
fi
REALM=$(echo "$REALM" | tr [a-z] [A-Z])
DOMAIN=$(echo "$REALM" | tr [A-Z] [a-z])
if [ ! -f /etc/timezone ] && [ ! -z "$TZ" ]; then
echo 'Set timezone'
rm /etc/localtime
cp /usr/share/zoneinfo/$TZ /etc/localtime
echo $TZ >/etc/timezone
fi
# Clustering
if [ -z "$CLUSTER_NAME" ]; then
CTDB_ENABLED=false
ETC_DIR=/etc/samba
PRINTERDRIVERS_DIR=/var/lib/samba/printerdrivers
mkdir -p "$PRINTERDRIVERS_DIR"
else
if [ -z "$CLUSTER_SYSDIR_SHARED" ]; then
echo 'System persistent directory shared across the cluster CLUSTER_SYSDIR_SHARED must be provided'
exit 1
fi
if [ -z "$CLUSTER_SYSDIR_LOCAL" ]; then
echo 'System persistent directory local to the node CLUSTER_SYSDIR_LOCAL must be provided'
exit 1
fi
if [ -z "$CLUSTER_NODE_NAMES" ]; then
echo 'The CTDB cluster nodes DNS names CLUSTER_NODE_NAMES must be provided'
exit 1
fi
echo "Starting as a cluster"
CTDB_ENABLED=true
mkdir -p "$CLUSTER_SYSDIR_SHARED/etc"
mkdir -p "$CLUSTER_SYSDIR_SHARED/cups"
ln -s "$CLUSTER_SYSDIR_SHARED/cups" /etc/cups-persist
mkdir -p "$CLUSTER_SYSDIR_SHARED/printerdrivers"
ETC_DIR=$CLUSTER_SYSDIR_SHARED/etc
PRINTERDRIVERS_DIR=$CLUSTER_SYSDIR_SHARED/printerdrivers
NETBIOS_NAME=$CLUSTER_NAME
CLUSTER_LOG_LEVEL="${CLUSTER_LOG_LEVEL:-NOTICE}"
rm -f /etc/ctdb/ctdb.conf
# For CTDB variables see https://ctdb.samba.org/manpages/ctdb.conf.5.html
echo [logging] >> /etc/ctdb/ctdb.conf
echo log level = $CLUSTER_LOG_LEVEL >> /etc/ctdb/ctdb.conf
echo [cluster] >> /etc/ctdb/ctdb.conf
echo 'nodes list = !/usr/bin/bash /resolveNodes.sh '"$CLUSTER_NODE_NAMES" >> /etc/ctdb/ctdb.conf
# Locking seems broken on objectivefs
#mkdir -p "$CLUSTER_SYSDIR_SHARED/ctdb"
#echo cluster lock = $CLUSTER_SYSDIR_SHARED/ctdb/ctdb.lock >> /etc/ctdb/ctdb.conf
mkdir -p "$CLUSTER_SYSDIR_LOCAL/ctdb-persist"
echo [database] >> /etc/ctdb/ctdb.conf
echo persistent database directory = $CLUSTER_SYSDIR_LOCAL/ctdb-persist >> /etc/ctdb/ctdb.conf
echo tdb mutexes = true >> /etc/ctdb/ctdb.conf
# We do not have enough privileges in a container for setting scheduling
echo [legacy] >> /etc/ctdb/ctdb.conf
echo realtime scheduling = false >> /etc/ctdb/ctdb.conf
# Wait a little bit so we see all/most peer nodes through DNS (resolveNodes.sh)
sleep 15
fi
if [ ! -f "$ETC_DIR/krb5.keytab" ]; then
if [ ! -f /run/secrets/$ADMIN_PASSWORD_SECRET ]; then
echo 'Cannot read secret $ADMIN_PASSWORD_SECRET in /run/secrets'
exit 1
fi
ADMIN_PASSWORD=$(cat /run/secrets/$ADMIN_PASSWORD_SECRET)
rm -f "$ETC_DIR/smb.conf" /etc/krb5.conf
if [ "$CTDB_ENABLED" = "true" ]; then
PREV_HOSTNAME=`hostname`
hostname -b "$CLUSTER_NAME.$DOMAIN"
fi
# realm join is broken as it requires --privileged but difficult to add for swarm
# so it can execute /usr/sbin/adcli. Therefore we execute it directly and create
# the /etc/krb5.conf and /etc/sssd/sssd.conf manually
# echo $ADMIN_PASSWORD|realm join -v $REALM --user=$ADMIN_ACCOUNT
echo $ADMIN_PASSWORD|/usr/sbin/adcli join --verbose --domain $DOMAIN --domain-realm $REALM --login-type user --login-user $ADMIN_ACCOUNT --stdin-password
if [ "$CTDB_ENABLED" = "true" ]; then
hostname -b "$PREV_HOSTNAME"
fi
mv /etc/krb5.keytab "$ETC_DIR/"
fi
if [ ! -L /etc/krb5.keytab ]; then
ln -s "$ETC_DIR/krb5.keytab" /etc/krb5.keytab
fi
echo -e "[libdefaults]\ndefault_realm = $REALM\ndns_lookup_realm = false\ndns_lookup_kdc = true" > /etc/krb5.conf
mkdir -p -m 700 "$ETC_DIR/conf.d"
for file in /etc/samba/smb.conf; do
sed -e "s:{{ ALLOW_DNS_UPDATES }}:$ALLOW_DNS_UPDATES:" \
-e "s:{{ BIND_INTERFACES_ONLY }}:$BIND_INTERFACES_ONLY:" \
-e "s+{{ INTERFACES }}+$INTERFACES+" \
-e "s:{{ LOG_LEVEL }}:$LOG_LEVEL:" \
-e "s:{{ NETBIOS_NAME }}:$NETBIOS_NAME:" \
-e "s:{{ REALM }}:$REALM:" \
-e "s:{{ KEYTAB_PATH }}:$ETC_DIR/krb5.keytab:" \
-e "s:{{ PRINTERDRIVERS_DIR }}:$PRINTERDRIVERS_DIR:" \
-e "s:{{ SERVER_STRING }}:$SERVER_STRING:" \
-e "s:{{ WINBIND_USE_DEFAULT_DOMAIN }}:$WINBIND_USE_DEFAULT_DOMAIN:" \
-e "s:{{ WORKGROUP }}:$WORKGROUP:" \
/root/$(basename $file).j2 > $file
done
if [ "$CTDB_ENABLED" = "true" ]; then
echo "clustering = yes" >> /etc/samba/smb.conf
# It is recommended to use `net conf import some.conf` to add configuration
echo "include = registry" >> /etc/samba/smb.conf
echo "ctdbd socket = /run/ctdb/ctdbd.socket" >> /etc/samba/smb.conf
fi
for file in "$ETC_DIR"/conf.d/*.conf; do
echo "include = $file" >> /etc/samba/smb.conf
done
#echo "Activating home directory auto-creation"
#echo "session required pam_mkhomedir.so skel=/etc/skel/ umask=0022" | tee -a /etc/pam.d/common-session
if [ "$CTDB_ENABLED" = "false" ]; then
source /ensureJoined.sh
fi
# CUPS persistence and permissions
mkdir -p /etc/cups-persist/ppd
touch /etc/cups-persist/printers.conf
sed -i -E "s:^(lpadmin\:x\:[0-9]+\:)(.*)$:\1$ADMIN_ACCOUNT\,\2:" /etc/group
sed -i -E "s:^(lpadmin\:x\:[0-9]+\:)(.*)$:\1$ADMIN_ACCOUNT\,\2:" /etc/group
if [ -z "$CUPS_TRUSTED_PROXY" ]; then
sed -E -i "s:(Order allow\,deny):\1\n Allow all:" /etc/cups/cupsd.conf
else
sed -E -i "s:(Order allow\,deny):\1\n Allow $CUPS_TRUSTED_PROXY:" /etc/cups/cupsd.conf
echo -e "\n" >> /etc/cups/cupsd.conf
echo "DefaultEncryption Never" >> /etc/cups/cupsd.conf
fi
# Samba exporter pipes
pipe_permissions="660"
pipe_owner="root:samba-exporter"
request_pipe_file="/run/samba_exporter.request.pipe"
response_pipe_file="/run/samba_exporter.response.pipe"
rm -f "$request_pipe_file"
mkfifo "$request_pipe_file"
chown "$pipe_owner" "$request_pipe_file"
chmod "$pipe_permissions" "$request_pipe_file"
rm -f "$response_pipe_file"
mkfifo "$response_pipe_file"
chown "$pipe_owner" "$response_pipe_file"
chmod "$pipe_permissions" "$response_pipe_file"
echo 'Restarting Samba using supervisord'
if [ "$CTDB_ENABLED" = "true" ]; then
export CTDB_ENABLED=true
export CTDB_DISABLED=false
else
export CTDB_ENABLED=false
export CTDB_DISABLED=true
fi
exec /usr/bin/supervisord -c /etc/supervisor/conf.d/supervisord.conf