TASK: [mariadb | Waiting for MariaDB service to be ready] *********************
failed: [cpn00011] => {"attempts": 6, "changed": false, "cmd": ["docker", "exec", "mariadb", "ls", "/var/lib/mysql/mariadb.pid"], "delta": "0:00:00.214375", "end": "2016-02-22 09:06:12.478116", "failed": true, "rc": 2, "start": "2016-02-22 09:06:12.263741", "stdout_lines": [], "warnings": []}
stderr: ls: cannot access /var/lib/mysql/mariadb.pid: No such file or directory
msg: Task failed as maximum retries was encountered
failed: [cpn00012] => {"attempts": 6, "changed": false, "cmd": ["docker", "exec", "mariadb", "ls", "/var/lib/mysql/mariadb.pid"], "delta": "0:00:00.211907", "end": "2016-02-22 09:06:12.523746", "failed": true, "rc": 2, "start": "2016-02-22 09:06:12.311839", "stdout_lines": [], "warnings": []}
stderr: ls: cannot access /var/lib/mysql/mariadb.pid: No such file or directory
msg: Task failed as maximum retries was encountered
failed: [cpn00013] => {"attempts": 6, "changed": false, "cmd": ["docker", "exec", "mariadb", "ls", "/var/lib/mysql/mariadb.pid"], "delta": "0:00:00.228125", "end": "2016-02-22 09:06:12.603916", "failed": true, "rc": 2, "start": "2016-02-22 09:06:12.375791", "stdout_lines": [], "warnings": []}
stderr: ls: cannot access /var/lib/mysql/mariadb.pid: No such file or directory
msg: Task failed as maximum retries was encountered

FATAL: all hosts have already failed -- aborting