I'm seeing the same issue.

cinder/0*                        error     idle   1        10.244.128.6    8776/tcp        hook failed: "shared-db-relation-changed" for mysql:shared-db

Below is the traceback from the log.  Please see full log attached.

2017-01-20 05:22:41 INFO shared-db-relation-changed 2017-01-20 05:22:41.864 14904 ERROR cinder   File "/usr/lib/python2.7/dist-packages/cinder/db/migration.py", line 57, in db_sync
2017-01-20 05:22:41 INFO shared-db-relation-changed 2017-01-20 05:22:41.864 14904 ERROR cinder     engine = db_api.get_engine()
2017-01-20 05:22:41 INFO shared-db-relation-changed 2017-01-20 05:22:41.864 14904 ERROR cinder   File "/usr/lib/python2.7/dist-packages/cinder/db/sqlalchemy/api.py", line 88, in get_engine
2017-01-20 05:22:41 INFO shared-db-relation-changed 2017-01-20 05:22:41.864 14904 ERROR cinder     facade = _create_facade_lazily()
2017-01-20 05:22:41 INFO shared-db-relation-changed 2017-01-20 05:22:41.864 14904 ERROR cinder   File "/usr/lib/python2.7/dist-packages/cinder/db/sqlalchemy/api.py", line 75, in _create_facade_lazily
2017-01-20 05:22:41 INFO shared-db-relation-changed 2017-01-20 05:22:41.864 14904 ERROR cinder     **dict(CONF.database)
2017-01-20 05:22:41 INFO shared-db-relation-changed 2017-01-20 05:22:41.864 14904 ERROR cinder   File "/usr/lib/python2.7/dist-packages/oslo_db/sqlalchemy/enginefacade.py", line 943, in __init__
2017-01-20 05:22:41 INFO shared-db-relation-changed 2017-01-20 05:22:41.864 14904 ERROR cinder     slave_connection=slave_connection)
2017-01-20 05:22:41 INFO shared-db-relation-changed 2017-01-20 05:22:41.864 14904 ERROR cinder   File "/usr/lib/python2.7/dist-packages/oslo_db/sqlalchemy/enginefacade.py", line 338, in _start
2017-01-20 05:22:41 INFO shared-db-relation-changed 2017-01-20 05:22:41.864 14904 ERROR cinder     engine_args, maker_args)
2017-01-20 05:22:41 INFO shared-db-relation-changed 2017-01-20 05:22:41.864 14904 ERROR cinder   File "/usr/lib/python2.7/dist-packages/oslo_db/sqlalchemy/enginefacade.py", line 362, in _setup_for_connection
2017-01-20 05:22:41 INFO shared-db-relation-changed 2017-01-20 05:22:41.864 14904 ERROR cinder     sql_connection=sql_connection, **engine_kwargs)
2017-01-20 05:22:41 INFO shared-db-relation-changed 2017-01-20 05:22:41.864 14904 ERROR cinder   File "/usr/lib/python2.7/dist-packages/oslo_db/sqlalchemy/engines.py", line 152, in create_engine
2017-01-20 05:22:41 INFO shared-db-relation-changed 2017-01-20 05:22:41.864 14904 ERROR cinder     test_conn = _test_connection(engine, max_retries, retry_interval)
2017-01-20 05:22:41 INFO shared-db-relation-changed 2017-01-20 05:22:41.864 14904 ERROR cinder   File "/usr/lib/python2.7/dist-packages/oslo_db/sqlalchemy/engines.py", line 334, in _test_connection
2017-01-20 05:22:41 INFO shared-db-relation-changed 2017-01-20 05:22:41.864 14904 ERROR cinder     six.reraise(type(de_ref), de_ref)
2017-01-20 05:22:41 INFO shared-db-relation-changed 2017-01-20 05:22:41.864 14904 ERROR cinder   File "<string>", line 2, in reraise
2017-01-20 05:22:41 INFO shared-db-relation-changed 2017-01-20 05:22:41.864 14904 ERROR cinder DBConnectionError: (pymysql.err.OperationalError) (2003, 'Can\'t connect to MySQL server on \'10.244.208.195\' ((1130, u"Host \'hayward-32.oilstaging\' is not allowed to connect to this MySQL server"))')
2017-01-20 05:22:41 INFO shared-db-relation-changed 2017-01-20 05:22:41.864 14904 ERROR cinder