Comment 1 for bug 1777939

https://logs.rdoproject.org/openstack-periodic/periodic-tripleo-ci-centos-7-ovb-1ctlr_1comp-featureset002-master-upload/9c3c747/undercloud/var/log/containers/nova/nova-compute.log.txt.gz

2018-06-20 15:00:51.277 8 ERROR oslo.messaging._drivers.impl_rabbit [req-6ffa11a4-1b55-47a3-9842-921f41477733 - - - - -] Unable to connect to AMQP server on undercloud.internalapi.localdomain:5672 after None tries: (0, 0): (403) ACCESS_REFUSED - Login was refused using authentication mechanism AMQPLAIN. For details see the broker logfile.: AccessRefused: (0, 0): (403) ACCESS_REFUSED - Login was refused using authentication mechanism AMQPLAIN. For details see the broker logfile.
2018-06-20 15:00:51.277 8 CRITICAL nova [req-6ffa11a4-1b55-47a3-9842-921f41477733 - - - - -] Unhandled error: MessageDeliveryFailure: Unable to connect to AMQP server on undercloud.internalapi.localdomain:5672 after None tries: (0, 0): (403) ACCESS_REFUSED - Login was refused using authentication mechanism AMQPLAIN. For details see the broker logfile.
2018-06-20 15:00:51.277 8 ERROR nova Traceback (most recent call last):
2018-06-20 15:00:51.277 8 ERROR nova File "/usr/bin/nova-compute", line 10, in <module>
2018-06-20 15:00:51.277 8 ERROR nova sys.exit(main())
2018-06-20 15:00:51.277 8 ERROR nova File "/usr/lib/python2.7/site-packages/nova/cmd/compute.py", line 57, in main
2018-06-20 15:00:51.277 8 ERROR nova topic=compute_rpcapi.RPC_TOPIC)
2018-06-20 15:00:51.277 8 ERROR nova File "/usr/lib/python2.7/site-packages/nova/service.py", line 259, in create
2018-06-20 15:00:51.277 8 ERROR nova periodic_interval_max=periodic_interval_max)
2018-06-20 15:00:51.277 8 ERROR nova File "/usr/lib/python2.7/site-packages/nova/service.py", line 138, in __init__
2018-06-20 15:00:51.277 8 ERROR nova conductor_api.wait_until_ready(context.get_admin_context())
2018-06-20 15:00:51.277 8 ERROR nova File "/usr/lib/python2.7/site-packages/nova/conductor/api.py", line 67, in wait_until_ready
2018-06-20 15:00:51.277 8 ERROR nova timeout=timeout)
2018-06-20 15:00:51.277 8 ERROR nova File "/usr/lib/python2.7/site-packages/nova/baserpc.py", line 58, in ping
2018-06-20 15:00:51.277 8 ERROR nova return cctxt.call(context, 'ping', arg=arg_p)
2018-06-20 15:00:51.277 8 ERROR nova File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/client.py", line 179, in call
2018-06-20 15:00:51.277 8 ERROR nova retry=self.retry)
2018-06-20 15:00:51.277 8 ERROR nova File "/usr/lib/python2.7/site-packages/oslo_messaging/transport.py", line 133, in _send
2018-06-20 15:00:51.277 8 ERROR nova retry=retry)
2018-06-20 15:00:51.277 8 ERROR nova File "/usr/lib/python2.7/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 584, in send
2018-06-20 15:00:51.277 8 ERROR nova call_monitor_timeout, retry=retry)
2018-06-20 15:00:51.277 8 ERROR nova File "/usr/lib/python2.7/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 526, in _send
2018-06-20 15:00:51.277 8 ERROR nova msg.update({'_reply_q': self._get_reply_q()})
2018-06-20 15:00:51.277 8 ERROR nova File "/usr/lib/python2.7/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 507, in _get_reply_q
2018-06-20 15:00:51.277 8 ERROR nova conn = self._get_connection(rpc_common.PURPOSE_LISTEN)
2018-06-20 15:00:51.277 8 ERROR nova File "/usr/lib/python2.7/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 498, in _get_connection
2018-06-20 15:00:51.277 8 ERROR nova purpose=purpose)
2018-06-20 15:00:51.277 8 ERROR nova File "/usr/lib/python2.7/site-packages/oslo_messaging/_drivers/common.py", line 407, in __init__
2018-06-20 15:00:51.277 8 ERROR nova self.connection = connection_pool.create(purpose)
2018-06-20 15:00:51.277 8 ERROR nova File "/usr/lib/python2.7/site-packages/oslo_messaging/_drivers/pool.py", line 144, in create
2018-06-20 15:00:51.277 8 ERROR nova return self.connection_cls(self.conf, self.url, purpose)
2018-06-20 15:00:51.277 8 ERROR nova File "/usr/lib/python2.7/site-packages/oslo_messaging/_drivers/impl_rabbit.py", line 614, in __init__
2018-06-20 15:00:51.277 8 ERROR nova self.ensure_connection()
2018-06-20 15:00:51.277 8 ERROR nova File "/usr/lib/python2.7/site-packages/oslo_messaging/_drivers/impl_rabbit.py", line 713, in ensure_connection
2018-06-20 15:00:51.277 8 ERROR nova self.ensure(method=self.connection.connect)
2018-06-20 15:00:51.277 8 ERROR nova File "/usr/lib/python2.7/site-packages/oslo_messaging/_drivers/impl_rabbit.py", line 825, in ensure
2018-06-20 15:00:51.277 8 ERROR nova raise exceptions.MessageDeliveryFailure(msg)
2018-06-20 15:00:51.277 8 ERROR nova MessageDeliveryFailure: Unable to connect to AMQP server on undercloud.internalapi.localdomain:5672 after None tries: (0, 0): (403) ACCESS_REFUSED - Login was refused using authentication mechanism AMQPLAIN. For details see the broker logfile.