Comment 1 for bug 1627565

With trove/ocata over ubuntu/xenial, this bug also arises when deploying mariadb/galera cluster:

2017-07-07 12:41:24.250 7 ERROR oslo_messaging.rpc.server Traceback (most recent call last):
2017-07-07 12:41:24.250 7 ERROR oslo_messaging.rpc.server File "/var/lib/kolla/venv/local/lib/python2.7/site-packages/oslo_messaging/rpc/server.py", line 155, in _process_incoming
2017-07-07 12:41:24.250 7 ERROR oslo_messaging.rpc.server res = self.dispatcher.dispatch(message)
2017-07-07 12:41:24.250 7 ERROR oslo_messaging.rpc.server File "/var/lib/kolla/venv/local/lib/python2.7/site-packages/oslo_messaging/rpc/dispatcher.py", line 222, in dispatch
2017-07-07 12:41:24.250 7 ERROR oslo_messaging.rpc.server return self._do_dispatch(endpoint, method, ctxt, args)
2017-07-07 12:41:24.250 7 ERROR oslo_messaging.rpc.server File "/var/lib/kolla/venv/local/lib/python2.7/site-packages/oslo_messaging/rpc/dispatcher.py", line 192, in _do_dispatch
2017-07-07 12:41:24.250 7 ERROR oslo_messaging.rpc.server result = func(ctxt, **new_args)
2017-07-07 12:41:24.250 7 ERROR oslo_messaging.rpc.server File "/var/lib/kolla/venv/local/lib/python2.7/site-packages/osprofiler/profiler.py", line 153, in wrapper
2017-07-07 12:41:24.250 7 ERROR oslo_messaging.rpc.server return f(*args, **kwargs)
2017-07-07 12:41:24.250 7 ERROR oslo_messaging.rpc.server File "/var/lib/kolla/venv/local/lib/python2.7/site-packages/trove/taskmanager/manager.py", line 395, in create_cluster
2017-07-07 12:41:24.250 7 ERROR oslo_messaging.rpc.server cluster_tasks.create_cluster(context, cluster_id)
2017-07-07 12:41:24.250 7 ERROR oslo_messaging.rpc.server File "/var/lib/kolla/venv/local/lib/python2.7/site-packages/trove/common/strategies/cluster/experimental/galera_common/taskmanager.py", line 141, in create_cluster
2017-07-07 12:41:24.250 7 ERROR oslo_messaging.rpc.server _create_cluster()
2017-07-07 12:41:24.250 7 ERROR oslo_messaging.rpc.server File "/var/lib/kolla/venv/local/lib/python2.7/site-packages/trove/common/strategies/cluster/experimental/galera_common/taskmanager.py", line 88, in _create_cluster
2017-07-07 12:41:24.250 7 ERROR oslo_messaging.rpc.server cluster_ips = [self.get_ip(instance) for instance in instances]
2017-07-07 12:41:24.250 7 ERROR oslo_messaging.rpc.server File "/var/lib/kolla/venv/local/lib/python2.7/site-packages/trove/taskmanager/models.py", line 215, in get_ip
2017-07-07 12:41:24.250 7 ERROR oslo_messaging.rpc.server return instance.get_visible_ip_addresses()[0]
2017-07-07 12:41:24.250 7 ERROR oslo_messaging.rpc.server IndexError: list index out of range
2017-07-07 12:41:24.250 7 ERROR oslo_messaging.rpc.server