Comment 6 for bug 1491782

actully re reading my error message it is a differnet issue but may be related

failed: [localhost] => {"attempts": 10, "changed": false, "cmd": ["docker", "exec", "-t", "kolla_ansible", "/usr/bin/ansible", "localhost", "-m", "mysql_user", "-a", "login_host='10.0.2.15' login_port='3306' login_user='root' login_password='password' name='haproxy' password='' host='%'"], "delta": "0:00:00.355437", "end": "2015-09-10 07:57:29.293101", "failed": true, "rc": 2, "start": "2015-09-10 07:57:28.937664", "stdout_lines": ["localhost | FAILED! => {", " \"changed\": false, ", " \"failed\": true, ", " \"msg\": \"unable to connect to database, check login_user and login_password are correct or ~/.my.cnf has the credentials. Exception message: (1130, \\\"Host '10.0.2.15' is not allowed to connect to this MariaDB server\\\")\"", "}"], "warnings": []}
stdout: localhost | FAILED! => {
    "changed": false,
    "failed": true,
    "msg": "unable to connect to database, check login_user and login_password are correct or ~/.my.cnf has the credentials. Exception message: (1130, \"Host '10.0.2.15' is not allowed to connect to this MariaDB server\")"
}
msg: Task failed as maximum retries was encountered

FATAL: all hosts have already failed -- aborting