if keystone starts first, spam of errors

If the keystone container starts prior to the mariadb container, the error logs contain all kinds of spam. Before keystone is started, mariadb health should be checked to determine that is up and operational.

[fedora@my-n6xa3qimt6on-0-yhalyw3gjl6p-kube-node-r2v7264y2be6 ~]$ sudo docker logs 64cb16680cab

2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi return f(self, *args, **kwargs)
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi File "/usr/lib/python2.7/site-packages/keystone/catalog/core.py", line 117, in list_services
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi return self.driver.list_services(hints or driver_hints.Hints())
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi File "/usr/lib/python2.7/site-packages/keystone/common/sql/core.py", line 224, in wrapper
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi return f(self, hints, *args, **kwargs)
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi File "/usr/lib/python2.7/site-packages/keystone/catalog/backends/sql.py", line 162, in list_services
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi session = sql.get_session()
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi File "/usr/lib/python2.7/site-packages/keystone/common/sql/core.py", line 192, in get_session
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi return _get_engine_facade().get_session(expire_on_commit=expire_on_commit)
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi File "/usr/lib/python2.7/site-packages/keystone/common/sql/core.py", line 176, in _get_engine_facade
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi CONF.database.connection, CONF)
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi File "/usr/lib/python2.7/site-packages/keystone/openstack/common/db/sqlalchemy/session.py", line 904, in from_config
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi **dict(conf.database.items()))
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi File "/usr/lib/python2.7/site-packages/keystone/openstack/common/db/sqlalchemy/session.py", line 847, in __init__
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi retry_interval=kwargs.get('retry_interval', 10))
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi File "/usr/lib/python2.7/site-packages/keystone/openstack/common/db/sqlalchemy/session.py", line 653, in create_engine
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi _mysql_set_mode_callback(engine, mysql_sql_mode)
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi File "/usr/lib/python2.7/site-packages/keystone/openstack/common/db/sqlalchemy/session.py", line 577, in _mysql_set_mode_callback
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi _mysql_check_effective_sql_mode(engine)
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi File "/usr/lib/python2.7/site-packages/keystone/openstack/common/db/sqlalchemy/session.py", line 556, in _mysql_check_effective_sql_mode
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi realmode = _mysql_get_effective_sql_mode(engine)
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi File "/usr/lib/python2.7/site-packages/keystone/openstack/common/db/sqlalchemy/session.py", line 548, in _mysql_get_effective_sql_mode
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi row = engine.execute("SHOW VARIABLES LIKE 'sql_mode'").fetchone()
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi File "/usr/lib64/python2.7/site-packages/sqlalchemy/engine/base.py", line 1613, in execute
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi connection = self.contextual_connect(close_with_result=True)
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi File "/usr/lib64/python2.7/site-packages/sqlalchemy/engine/base.py", line 1661, in contextual_connect
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi self.pool.connect(),
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi File "/usr/lib64/python2.7/site-packages/sqlalchemy/pool.py", line 326, in connect
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi return _ConnectionFairy(self).checkout()
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi File "/usr/lib64/python2.7/site-packages/sqlalchemy/pool.py", line 485, in __init__
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi rec = self._connection_record = pool._do_get()
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi File "/usr/lib64/python2.7/site-packages/sqlalchemy/pool.py", line 770, in _do_get
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi return self._create_connection()
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi File "/usr/lib64/python2.7/site-packages/sqlalchemy/pool.py", line 279, in _create_connection
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi return _ConnectionRecord(self)
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi File "/usr/lib64/python2.7/site-packages/sqlalchemy/pool.py", line 372, in __init__
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi self.connection = self.__connect()
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi File "/usr/lib64/python2.7/site-packages/sqlalchemy/pool.py", line 433, in __connect
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi connection = self.__pool._creator()
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi File "/usr/lib64/python2.7/site-packages/sqlalchemy/engine/strategies.py", line 80, in connect
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi return dialect.connect(*cargs, **cparams)
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi File "/usr/lib64/python2.7/site-packages/sqlalchemy/engine/default.py", line 283, in connect
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi return self.dbapi.connect(*cargs, **cparams)
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi File "/usr/lib64/python2.7/site-packages/MySQLdb/__init__.py", line 81, in Connect
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi return Connection(*args, **kwargs)
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi File "/usr/lib64/python2.7/site-packages/MySQLdb/connections.py", line 187, in __init__
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi super(Connection, self).__init__(*args, **kwargs2)
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi OperationalError: (OperationalError) (2013, "Lost connection to MySQL server at 'reading initial communication packet', system error: 0") None None
2014-10-08 22:48:28.077 39 TRACE keystone.common.wsgi
An unexpected error prevented the server from fulfilling your request. (HTTP 500)