root@controller:/# su -s /bin/sh -c "keystone-manage db_sync" keystone
2016-10-18 17:44:44.167 6191 WARNING oslo_db.sqlalchemy.engines [-] SQL connecti
2016-10-18 17:44:54.168 6191 WARNING oslo_db.sqlalchemy.engines [-] SQL connecti
2016-10-18 17:45:04.175 6191 WARNING oslo_db.sqlalchemy.engines [-] SQL connection failed.   8 attempts left.
2016-10-18 17:45:14.184 6191 WARNING oslo_db.sqlalchemy.engines [-] SQL connection failed.   7 attempts left.
2016-10-18 17:45:24.190 6191 WARNING oslo_db.sqlalchemy.engines [-] SQL connection failed.   6 attempts left.
2016-10-18 17:45:34.198 6191 WARNING oslo_db.sqlalchemy.engines [-] SQL connection failed.   5 attempts left.
2016-10-18 17:45:44.204 6191 WARNING oslo_db.sqlalchemy.engines [-] SQL connection failed.   4 attempts left.
2016-10-18 17:45:54.213 6191 WARNING oslo_db.sqlalchemy.engines [-] SQL connection failed.   3 attempts left.
2016-10-18 17:46:04.219 6191 WARNING oslo_db.sqlalchemy.engines [-] SQL connection failed.   2 attempts left.
2016-10-18 17:46:14.226 6191 WARNING oslo_db.sqlalchemy.engines [-] SQL connection failed.   1 attempts left.
2016-10-18 17:46:24.233 6191 CRITICAL keystone [-] DBConnectionError: (pymysql.err.Operati  onalError) (2003, "Can't connect to MySQL server on 'controller' ([Errno 111] Connection r  efused)")
2016-10-18 17:46:24.233 6191 ERROR keystone Traceback (most recent call last):
2016-10-18 17:46:24.233 6191 ERROR keystone   File "/usr/bin/keystone-manage", line 10, in   <module>
2016-10-18 17:46:24.233 6191 ERROR keystone     sys.exit(main())
2016-10-18 17:46:24.233 6191 ERROR keystone   File "/usr/lib/python2.7/dist-packages/keyst  one/cmd/manage.py", line 47, in main
2016-10-18 17:46:24.233 6191 ERROR keystone     cli.main(argv=sys.argv, config_files=confi  g_files)
2016-10-18 17:46:24.233 6191 ERROR keystone   File "/usr/lib/python2.7/dist-packages/keyst  one/cmd/cli.py", line 1010, in main
2016-10-18 17:46:24.233 6191 ERROR keystone     CONF.command.cmd_class.main()
2016-10-18 17:46:24.233 6191 ERROR keystone   File "/usr/lib/python2.7/dist-packages/keyst  one/cmd/cli.py", line 389, in main
2016-10-18 17:46:24.233 6191 ERROR keystone     migration_helpers.sync_database_to_version  (extension, version)
2016-10-18 17:46:24.233 6191 ERROR keystone   File "/usr/lib/python2.7/dist-packages/keyst  one/common/sql/migration_helpers.py", line 210, in sync_database_to_version
2016-10-18 17:46:24.233 6191 ERROR keystone     _sync_common_repo(version)
2016-10-18 17:46:24.233 6191 ERROR keystone   File "/usr/lib/python2.7/dist-packages/keyst  one/common/sql/migration_helpers.py", line 132, in _sync_common_repo
2016-10-18 17:46:24.233 6191 ERROR keystone     with sql.session_for_write() as session:
2016-10-18 17:46:24.233 6191 ERROR keystone   File "/usr/lib/python2.7/contextlib.py", lin  e 17, in __enter__
2016-10-18 17:46:24.233 6191 ERROR keystone     return self.gen.next()
2016-10-18 17:46:24.233 6191 ERROR keystone   File "/usr/lib/python2.7/dist-packages/oslo_  db/sqlalchemy/enginefacade.py", line 759, in _transaction_scope
2016-10-18 17:46:24.233 6191 ERROR keystone     allow_async=self._allow_async) as resource  :
2016-10-18 17:46:24.233 6191 ERROR keystone   File "/usr/lib/python2.7/contextlib.py", lin  e 17, in __enter__
2016-10-18 17:46:24.233 6191 ERROR keystone     return self.gen.next()
2016-10-18 17:46:24.233 6191 ERROR keystone   File "/usr/lib/python2.7/dist-packages/oslo_  db/sqlalchemy/enginefacade.py", line 491, in _session
2016-10-18 17:46:24.233 6191 ERROR keystone     bind=self.connection, mode=self.mode)
2016-10-18 17:46:24.233 6191 ERROR keystone   File "/usr/lib/python2.7/dist-packages/oslo_  db/sqlalchemy/enginefacade.py", line 272, in _create_session
2016-10-18 17:46:24.233 6191 ERROR keystone     self._start()
2016-10-18 17:46:24.233 6191 ERROR keystone   File "/usr/lib/python2.7/dist-packages/oslo_  db/sqlalchemy/enginefacade.py", line 338, in _start
2016-10-18 17:46:24.233 6191 ERROR keystone     engine_args, maker_args)
2016-10-18 17:46:24.233 6191 ERROR keystone   File "/usr/lib/python2.7/dist-packages/oslo_  db/sqlalchemy/enginefacade.py", line 362, in _setup_for_connection
2016-10-18 17:46:24.233 6191 ERROR keystone     sql_connection=sql_connection, **engine_kw  args)
2016-10-18 17:46:24.233 6191 ERROR keystone   File "/usr/lib/python2.7/dist-packages/oslo_  db/sqlalchemy/engines.py", line 152, in create_engine
2016-10-18 17:46:24.233 6191 ERROR keystone     test_conn = _test_connection(engine, max_r  etries, retry_interval)
2016-10-18 17:46:24.233 6191 ERROR keystone   File "/usr/lib/python2.7/dist-packages/oslo_  db/sqlalchemy/engines.py", line 334, in _test_connection
2016-10-18 17:46:24.233 6191 ERROR keystone     six.reraise(type(de_ref), de_ref)
2016-10-18 17:46:24.233 6191 ERROR keystone   File "<string>", line 2, in reraise
2016-10-18 17:46:24.233 6191 ERROR keystone DBConnectionError: (pymysql.err.OperationalErr  or) (2003, "Can't connect to MySQL server on 'controller' ([Errno 111] Connection refused)  ")
2016-10-18 17:46:24.233 6191 ERROR keystone
root@controller:/#