sunetdrive/templates/mariadb_backup/check_replication.erb

#!/bin/bash

result="$(docker exec -u root mariadb_backup_mariadb_backup_1 mysql -p<%= @mysql_root_password %> -BN -e 'show status like "slave_running"')"
if [[ "${result}" == "Slave_running	ON" ]]; then
  echo "OK: Replica running"
  exit 0
else
  echo "CRITICAL: Replica not running"
  exit 2
fi