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Hi Tim and Alex,

I see congress recently added the HA functionality, and I was looking at the tempest test code to understand how to start a replica.  I created a new congress.conf file with the different "bind_port" and set the "datasource_sync_period" value to 5.  However, I got the errors below when I try to bring up the replica:

to start the replica: cd /opt/stack/congress && python /usr/local/bin/congress-server --config-file /tmp/congress.conf & echo $! >/tmp/congress.pid; fg || echo "congress failed to start" | tee "/tmp/congress.failure"

2015-07-27 14:56:33.592 TRACE congress.service Traceback (most recent call last):
2015-07-27 14:56:33.592 TRACE congress.service   File "/opt/stack/congress/congress/service.py", line 32, in wrapper
2015-07-27 14:56:33.592 TRACE congress.service     return f(*args, **kw)
2015-07-27 14:56:33.592 TRACE congress.service   File "/opt/stack/congress/congress/service.py", line 50, in congress_app_factory
2015-07-27 14:56:33.592 TRACE congress.service     cage = harness.create(root_path, data_path)
2015-07-27 14:56:33.592 TRACE congress.service   File "/opt/stack/congress/congress/harness.py", line 151, in create
2015-07-27 14:56:33.592 TRACE congress.service     for policy in db_policy_rules.get_policies():
2015-07-27 14:56:33.592 TRACE congress.service   File "/opt/stack/congress/congress/db/db_policy_rules.py", line 84, in get_policies
2015-07-27 14:56:33.592 TRACE congress.service     session = session or db.get_session()
2015-07-27 14:56:33.592 TRACE congress.service   File "/opt/stack/congress/congress/db/api.py", line 40, in get_session
2015-07-27 14:56:33.592 TRACE congress.service     facade = _create_facade_lazily()
2015-07-27 14:56:33.592 TRACE congress.service   File "/opt/stack/congress/congress/db/api.py", line 27, in _create_facade_lazily
2015-07-27 14:56:33.592 TRACE congress.service     _FACADE = session.EngineFacade.from_config(cfg.CONF, sqlite_fk=True)
2015-07-27 14:56:33.592 TRACE congress.service   File "/usr/local/lib/python2.7/dist-packages/oslo_db/sqlalchemy/enginefacade.py", lin
.....
2015-07-27 14:56:33.592 TRACE congress.service   File "/usr/local/lib/python2.7/dist-packages/pymysql/err.py", line 112, in _check_mysql_exception
2015-07-27 14:56:33.592 TRACE congress.service     raise errorclass(errno, errorvalue)
2015-07-27 14:56:33.592 TRACE congress.service OperationalError: (pymysql.err.OperationalError) (1040, u'Too many connections')

I got the same error when running the tempest test as well.  Any idea ?

Thanks,
Hong
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