From 5eaecf4b906916aa6a7822c32dde3269e65924a4 Mon Sep 17 00:00:00 2001
From: Bernhard Radermacher <bwr@celsius.bwr.net>
Date: Thu, 19 Feb 2026 11:09:35 +0100
Subject: [PATCH] conf prim node

---
 Dockerfile                            |  2 +
 docker-entrypoint-initdb.d/00-main.sh | 54 +++++++++++++++++++++++++++
 2 files changed, 56 insertions(+)
 create mode 100755 docker-entrypoint-initdb.d/00-main.sh

diff --git a/Dockerfile b/Dockerfile
index 0b18652..f174043 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -150,6 +150,8 @@ COPY docker-entrypoint.sh docker-ensure-initdb.sh /usr/local/bin/
 
 RUN ln -sT docker-ensure-initdb.sh /usr/local/bin/docker-enforce-initdb.sh
 
+COPY docker-entrypoint-initdb.d/* /docker-entrypoint-initdb.d/
+
 ENTRYPOINT ["docker-entrypoint.sh"]
 
 STOPSIGNAL SIGINT
diff --git a/docker-entrypoint-initdb.d/00-main.sh b/docker-entrypoint-initdb.d/00-main.sh
new file mode 100755
index 0000000..26edfc2
--- /dev/null
+++ b/docker-entrypoint-initdb.d/00-main.sh
@@ -0,0 +1,54 @@
+#!/usr/bin/env bash
+
+# the variable UPSTREAM indicates that a standby instance is requested, otherwise this is primary
+if [[ -z $UPSTREAM ]]; then
+
+  # ensure required entries in configuration
+  # shellcheck disable=SC2129
+  # echo "archive_command       = 'cp %p ${WAL_ARCHIVE:-/wal_archive}/%f'" >> /var/lib/postgresql/data/postgresql.conf
+  echo "archive_command       = '/bin/true'" >> /var/lib/postgresql/data/postgresql.conf
+  echo "archive_mode          = on" >> /var/lib/postgresql/data/postgresql.conf
+  echo "hot_standby           = on" >> /var/lib/postgresql/data/postgresql.conf
+  # echo "promote_trigger_file  = '/var/lib/postgresql/data/${TRIGGER_FILE:-i_am_primary}'" >> /var/lib/postgresql/data/postgresql.conf
+  # echo "wal_keep_size         = ${WAL_KEEP_SIZE:-1GB}" >> /var/lib/postgresql/data/postgresql.conf
+  echo "max_wal_senders       = 10" >> /var/lib/postgresql/data/postgresql.conf
+  echo "max_replication_slots = 10" >> /var/lib/postgresql/data/postgresql.conf
+  # ensure required entries in hba
+  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  ${NETWORK:-100.64.0.0/10}  trust" >> /var/lib/postgresql/data/pg_hba.conf
+  # create user for replication
+  psql -c "CREATE USER repmgr WITH REPLICATION ENCRYPTED PASSWORD '${REPLICATOR_PASSWORD}'; 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 "data_directory = '/var/lib/postgresql/data'"                        >> /etc/repmgr.conf
+
+  # process selected tweaks
+  if [[ -n $MAX_CONNECTIONS ]]; then
+      echo "max_connections      = ${MAX_CONNECTIONS}" >> /var/lib/postgresql/data/postgresql.conf
+  fi
+
+else
+# this is a standby
+  source /usr/local/bin/docker-entrypoint.sh
+
+  docker_temp_server_stop
+
+  rm -rf /var/lib/postgresql/data/*
+
+
+  echo "node_id = 2"                                                        >> /etc/repmgr.conf
+  echo "node_name = pg-1"                                                   >> /etc/repmgr.conf
+  echo "conninfo ='host=pg-1 dbname=repmgr user=repmgr connect_timeout=2'"  >> /etc/repmgr.conf
+  echo "data_directory = '/var/lib/postgresql/data'"                        >> /etc/repmgr.conf
+
+#  OLD_PGPASSWORD=$PGPASSWORD
+#  export PGPASSWORD=$REPLICATOR_PASSWORD
+#  pg_basebackup -h "${UPSTREAM}" -U repmgr -D "${PGDATA}" -Fp -Xs -P -R
+#  export PGPASSWORD=$OLD_PGPASSWORD
+
+fi