library/roles/postgresql: Scripts to regularly cleanup the WAL archives.

postgresql/templates/postgresql_wal_backup_and_removal.j2

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+#!/bin/bash
+
+BASE_BACKUP_DIR=/var/lib/pgsql/base_backup
+WAL_ARCHIVES_LOG_DIR=/var/lib/postgresql/9.5/archive_log
+WAL_LATEST_BACKUP=
+
+# The base backup dir needs to be empty
+
+rm -f $BASE_BACKUP_DIR/*
+pg_basebackup -F t -z -D /var/lib/pgsql/base_backup
+
+cd $WAL_ARCHIVES_LOG_DIR
+WAL_LATEST_BACKUP=$( /bin/ls -1 *.backup | sort | tail -1 )
+pg_archivecleanup $WAL_ARCHIVES_LOG_DIR $WAL_LATEST_BACKUP
+
+exit $?
+

postgresql/templates/wal_archive_cleanup.j2

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+#!/bin/bash
+
+su - postgres -c "/usr/local/sbin/postgresql_wal_backup_and_removal > /var/log/postgresql/wal_removal.log 2>&1"
+
+exit 0
+