chore: push lsn checkpoint on autoshutdown; enable use of recovery_target_lsn; bump admin-mgr (#714)

* chore: push lsn checkpoint on autoshutdown

* chore: switch `recovery_target` to `recovery_target_lsn`

* chore: create lsn checkpoint file at first boot

* chore: bump adminmgr

Author: pcnc

ansible/files/postgresql_config/custom_walg.conf.j2

@@ -11,7 +11,7 @@
 
 # - Recovery Target -
 
-#recovery_target = 'immediate'
+#recovery_target_lsn = ''
 #recovery_target_time = ''
 #recovery_target_action = 'promote'
 #recovery_target_timeline = 'current'

ansible/vars.yml

@@ -42,7 +42,7 @@ postgres_exporter_release_checksum:
   amd64: sha256:ff541bd3ee19c0ae003d71424a75edfcc8695e828dd20d5b4555ce433c89d60b
 
 adminapi_release: 0.48.0
-adminmgr_release: 0.9.0
+adminmgr_release: 0.10.0
 
 # Postgres Extensions
 postgis_release: "3.3.2"

docker/all-in-one/entrypoint.sh

@@ -1,6 +1,12 @@
 #!/bin/bash
 set -eou pipefail
 
+PG_CONF=/etc/postgresql/postgresql.conf
+SUPERVISOR_CONF=/etc/supervisor/supervisord.conf
+
+DATA_VOLUME_MOUNTPOINT=${DATA_VOLUME_MOUNTPOINT:-/data}
+export CONFIGURED_FLAG_PATH=${CONFIGURED_FLAG_PATH:-$DATA_VOLUME_MOUNTPOINT/machine.configured}
+
 # Ref: https://gist.github.com/sj26/88e1c6584397bb7c13bd11108a579746
 function retry {
   # Pass 0 for unlimited retries
@@ -44,11 +50,14 @@ function enable_swap {
   swapon /mnt/swapfile
 }
 
-PG_CONF=/etc/postgresql/postgresql.conf
-SUPERVISOR_CONF=/etc/supervisor/supervisord.conf
+function create_lsn_checkpoint_file {
+  if [ ! -f "${DATA_VOLUME_MOUNTPOINT}/latest-lsn-checkpoint" ]; then
+    echo "0/0" > "${DATA_VOLUME_MOUNTPOINT}/latest-lsn-checkpoint"
+    chown postgres:postgres "${DATA_VOLUME_MOUNTPOINT}/latest-lsn-checkpoint"
+    chmod 0300 "${DATA_VOLUME_MOUNTPOINT}/latest-lsn-checkpoint"
+  fi
+}
 
-DATA_VOLUME_MOUNTPOINT=${DATA_VOLUME_MOUNTPOINT:-/data}
-export CONFIGURED_FLAG_PATH=${CONFIGURED_FLAG_PATH:-$DATA_VOLUME_MOUNTPOINT/machine.configured}
 
 function setup_postgres {
   tar -xzvf "$INIT_PAYLOAD_PATH" -C / ./etc/postgresql.schema.sql
@@ -234,6 +243,7 @@ fi
 
 if [ "${PLATFORM_DEPLOYMENT:-}" ]; then
   enable_swap
+  create_lsn_checkpoint_file
 fi
 
 touch "$CONFIGURED_FLAG_PATH"

docker/all-in-one/shutdown.sh

@@ -59,6 +59,8 @@ SQL
     # This is to ensure that the WAL file is shipped, just in case
     sleep 1
 
+    /usr/bin/admin-mgr lsn-checkpoint-push || echo "Failed to push LSN checkpoint"
+
     kill -s TERM "$(supervisorctl pid)"
   fi
 }