docker/postgresrepmgr
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This commit is contained in:
Bernhard Radermacher
2026-02-19 13:55:38 +01:00
parent 12b9858e1e
commit 22fe5ea267
1 changed files with 39 additions and 28 deletions
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45
docker-entrypoint-initdb.d/00-main.sh
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@@ -1,8 +1,17 @@
#!/usr/bin/env bash
source /usr/local/bin/docker-entrypoint.sh
# the variable UPSTREAM indicates that a standby instance is requested, otherwise this is primary
if [[ -z $UPSTREAM ]]; then
psql -c "CREATE USER repmgr WITH SUPERUSER ENCRYPTED PASSWORD '${REPLICATOR_PASSWORD}';"
psql -c "CREATE DATABASE repmgr WITH OWNER repmgr;"
psql -c 'ALTER USER repmgr SET search_path TO repmgr, "$user", public;'
docker_temp_server_stop
# ensure required entries in configuration
# shellcheck disable=SC2129
# echo "archive_command = 'cp %p ${WAL_ARCHIVE:-/wal_archive}/%f'" >> /var/lib/postgresql/data/postgresql.conf
@@ -23,45 +32,47 @@ if [[ -z $UPSTREAM ]]; then
echo "host repmgr repmgr 100.64.0.0/10 trust" >> /var/lib/postgresql/data/pg_hba.conf
echo "host all all all scram-sha-256" >> /var/lib/postgresql/data/pg_hba.conf
# echo "local replication repmgr trust" >> /var/lib/postgresql/data/pg_hba.conf
# echo "host replication repmgr ${NETWORK:-100.64.0.0/10} trust" >> /var/lib/postgresql/data/pg_hba.conf
# echo "local repmgr repmgr trust" >> /var/lib/postgresql/data/pg_hba.conf
# echo "host repmgr repmgr ${NETWORK:-100.64.0.0/10} trust" >> /var/lib/postgresql/data/pg_hba.conf
# create user for replication
psql -c "CREATE USER repmgr WITH SUPERUSER ENCRYPTED PASSWORD '${REPLICATOR_PASSWORD}';"
psql -c "CREATE DATABASE repmgr WITH OWNER repmgr;"
psql -c 'ALTER USER repmgr SET search_path TO repmgr, "$user", public;'
echo "node_id = 1" >> /etc/repmgr.conf
echo "node_name = pg-0" >> /etc/repmgr.conf
echo "conninfo ='host=pg-0 dbname=repmgr user=repmgr connect_timeout=2'" >> /etc/repmgr.conf
echo "conninfo = 'host=pg-0 dbname=repmgr user=repmgr connect_timeout=2'" >> /etc/repmgr.conf
echo "data_directory = '/var/lib/postgresql/data'" >> /etc/repmgr.conf
echo "use_replication_slots = on" >> /etc/repmgr.conf
echo "pg_bindir = /usr/lib/postgresql/15/bin/" >> /etc/repmgr.conf
# process selected tweaks
if [[ -n $MAX_CONNECTIONS ]]; then
echo "max_connections = ${MAX_CONNECTIONS}" >> /var/lib/postgresql/data/postgresql.conf
fi
docker_temp_server_start
/usr/lib/postgresql/15/bin/repmgr -f /etc/repmgr.conf primary register
else
# this is a standby
source /usr/local/bin/docker-entrypoint.sh
docker_temp_server_stop
rm -rf /var/lib/postgresql/data/*
echo "node_id = 2" >> /etc/repmgr.conf
echo "node_name = pg-1" >> /etc/repmgr.conf
echo "conninfo ='host=pg-1 dbname=repmgr user=repmgr connect_timeout=2'" >> /etc/repmgr.conf
echo "conninfo = 'host=pg-1 dbname=repmgr user=repmgr connect_timeout=2'" >> /etc/repmgr.conf
echo "data_directory = '/var/lib/postgresql/data'" >> /etc/repmgr.conf
echo "use_replication_slots = on" >> /etc/repmgr.conf
echo "pg_bindir = /usr/lib/postgresql/15/bin/" >> /etc/repmgr.conf
until /usr/lib/postgresql/15/bin/repmgr -h pg-0 -U repmgr -f /etc/repmgr.conf standby clone --dry-run
do
echo "Upstream host not ready..."
sleep 300
done
/usr/lib/postgresql/15/bin/repmgr -h pg-0 -U repmgr -f /etc/repmgr.conf standby clone
# OLD_PGPASSWORD=$PGPASSWORD
# export PGPASSWORD=$REPLICATOR_PASSWORD
# pg_basebackup -h "${UPSTREAM}" -U repmgr -D "${PGDATA}" -Fp -Xs -P -R
# export PGPASSWORD=$OLD_PGPASSWORD
docker_temp_server_start
fi