2018-08-27 08:50:38.084 17745 ERROR oslo.messaging._drivers.impl_rabbit [req-7f47bb6e-0dae-4fb2-b8c1-594002df9260 4f2101a461a6470a867278c965b0cde4 2dd72e94503e4222b80ef789ed9b7f99 - default default] Failed to publish message to topic 'nova': 'NoneType' object has no attribute '__getitem__'
2018-08-27 08:50:38.085 17745 ERROR oslo.messaging._drivers.impl_rabbit [req-7f47bb6e-0dae-4fb2-b8c1-594002df9260 4f2101a461a6470a867278c965b0cde4 2dd72e94503e4222b80ef789ed9b7f99 - default default] Unable to connect to AMQP server on 10.127.3.64:5672 after None tries: 'NoneType' object has no attribute '__getitem__'
2018-08-27 08:50:38.086 17745 ERROR oslo_messaging.rpc.server [req-7f47bb6e-0dae-4fb2-b8c1-594002df9260 4f2101a461a6470a867278c965b0cde4 2dd72e94503e4222b80ef789ed9b7f99 - default default] Exception during message handling: MessageDeliveryFailure: Unable to connect to AMQP server on 10.127.3.64:5672 after None tries: 'NoneType' object has no attribute '__getitem__'
2018-08-27 08:50:38.086 17745 ERROR oslo_messaging.rpc.server Traceback (most recent call last):
2018-08-27 08:50:38.086 17745 ERROR oslo_messaging.rpc.server   File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/server.py", line 163, in _process_incoming
2018-08-27 08:50:38.086 17745 ERROR oslo_messaging.rpc.server     res = self.dispatcher.dispatch(message)
2018-08-27 08:50:38.086 17745 ERROR oslo_messaging.rpc.server   File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/dispatcher.py", line 220, in dispatch
2018-08-27 08:50:38.086 17745 ERROR oslo_messaging.rpc.server     return self._do_dispatch(endpoint, method, ctxt, args)
2018-08-27 08:50:38.086 17745 ERROR oslo_messaging.rpc.server   File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/dispatcher.py", line 190, in _do_dispatch
2018-08-27 08:50:38.086 17745 ERROR oslo_messaging.rpc.server     result = func(ctxt, **new_args)
2018-08-27 08:50:38.086 17745 ERROR oslo_messaging.rpc.server   File "/usr/lib/python2.7/site-packages/nova/conductor/manager.py", line 1200, in schedule_and_build_instances
2018-08-27 08:50:38.086 17745 ERROR oslo_messaging.rpc.server     limits=host['limits'])
2018-08-27 08:50:38.086 17745 ERROR oslo_messaging.rpc.server   File "/usr/lib/python2.7/site-packages/nova/compute/rpcapi.py", line 1129, in build_and_run_instance
2018-08-27 08:50:38.086 17745 ERROR oslo_messaging.rpc.server     limits=limits)
2018-08-27 08:50:38.086 17745 ERROR oslo_messaging.rpc.server   File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/client.py", line 152, in cast
2018-08-27 08:50:38.086 17745 ERROR oslo_messaging.rpc.server     self.transport._send(self.target, msg_ctxt, msg, retry=self.retry)
2018-08-27 08:50:38.086 17745 ERROR oslo_messaging.rpc.server   File "/usr/lib/python2.7/site-packages/oslo_messaging/transport.py", line 123, in _send
2018-08-27 08:50:38.086 17745 ERROR oslo_messaging.rpc.server     timeout=timeout, retry=retry)
2018-08-27 08:50:38.086 17745 ERROR oslo_messaging.rpc.server   File "/usr/lib/python2.7/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 578, in send
2018-08-27 08:50:38.086 17745 ERROR oslo_messaging.rpc.server     retry=retry)
2018-08-27 08:50:38.086 17745 ERROR oslo_messaging.rpc.server   File "/usr/lib/python2.7/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 564, in _send
2018-08-27 08:50:38.086 17745 ERROR oslo_messaging.rpc.server     msg=msg, timeout=timeout, retry=retry)
2018-08-27 08:50:38.086 17745 ERROR oslo_messaging.rpc.server   File "/usr/lib/python2.7/site-packages/oslo_messaging/_drivers/impl_rabbit.py", line 1271, in topic_send
2018-08-27 08:50:38.086 17745 ERROR oslo_messaging.rpc.server     retry=retry)
2018-08-27 08:50:38.086 17745 ERROR oslo_messaging.rpc.server   File "/usr/lib/python2.7/site-packages/oslo_messaging/_drivers/impl_rabbit.py", line 1154, in _ensure_publishing
2018-08-27 08:50:38.086 17745 ERROR oslo_messaging.rpc.server     self.ensure(method, retry=retry, error_callback=_error_callback)
2018-08-27 08:50:38.086 17745 ERROR oslo_messaging.rpc.server   File "/usr/lib/python2.7/site-packages/oslo_messaging/_drivers/impl_rabbit.py", line 825, in ensure
2018-08-27 08:50:38.086 17745 ERROR oslo_messaging.rpc.server     raise exceptions.MessageDeliveryFailure(msg)
2018-08-27 08:50:38.086 17745 ERROR oslo_messaging.rpc.server MessageDeliveryFailure: Unable to connect to AMQP server on 10.127.3.64:5672 after None tries: 'NoneType' object has no attribute '__getitem__'
2018-08-27 08:50:38.086 17745 ERROR oslo_messaging.rpc.server