ERROR nova Traceback (most recent call last):
2018-08-12 15:05:57.560 55479 ERROR nova   File "/usr/bin/nova-compute", line 10, in <module>
2018-08-12 15:05:57.560 55479 ERROR nova     sys.exit(main())
2018-08-12 15:05:57.560 55479 ERROR nova   File "/usr/lib/python2.7/dist-packages/nova/cmd/compute.py", line 60, in main
2018-08-12 15:05:57.560 55479 ERROR nova     db_allowed=CONF.conductor.use_local)
2018-08-12 15:05:57.560 55479 ERROR nova   File "/usr/lib/python2.7/dist-packages/nova/service.py", line 218, in create
2018-08-12 15:05:57.560 55479 ERROR nova     db_allowed=db_allowed)
2018-08-12 15:05:57.560 55479 ERROR nova   File "/usr/lib/python2.7/dist-packages/nova/service.py", line 92, in __init__
2018-08-12 15:05:57.560 55479 ERROR nova     self.manager = manager_class(host=self.host, *args, **kwargs)
2018-08-12 15:05:57.560 55479 ERROR nova   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 540, in __init__
2018-08-12 15:05:57.560 55479 ERROR nova     self.driver = driver.load_compute_driver(self.virtapi, compute_driver)
2018-08-12 15:05:57.560 55479 ERROR nova   File "/usr/lib/python2.7/dist-packages/nova/virt/driver.py", line 1626, in load_compute_driver
2018-08-12 15:05:57.560 55479 ERROR nova     virtapi)
2018-08-12 15:05:57.560 55479 ERROR nova   File "/usr/lib/python2.7/dist-packages/oslo_utils/importutils.py", line 44, in import_object
2018-08-12 15:05:57.560 55479 ERROR nova     return import_class(import_str)(*args, **kwargs)
2018-08-12 15:05:57.560 55479 ERROR nova   File "/usr/lib/python2.7/dist-packages/nova/virt/ec2/ec2driver.py", line 199, in __init__
2018-08-12 15:05:57.560 55479 ERROR nova     eventlet.spawn(KeyPairNotifications(self.ec2_conn).run)
2018-08-12 15:05:57.560 55479 ERROR nova   File "/usr/lib/python2.7/dist-packages/nova/virt/ec2/keypair.py", line 55, in __init__
2018-08-12 15:05:57.560 55479 ERROR nova     self.connection = Connection(self.broker_uri)
2018-08-12 15:05:57.560 55479 ERROR nova   File "/usr/lib/python2.7/dist-packages/kombu/connection.py", line 167, in __init__
2018-08-12 15:05:57.560 55479 ERROR nova     params.update(parse_url(hostname))
2018-08-12 15:05:57.560 55479 ERROR nova   File "/usr/lib/python2.7/dist-packages/kombu/utils/url.py", line 32, in parse_url
2018-08-12 15:05:57.560 55479 ERROR nova     scheme, host, port, user, password, path, query = _parse_url(url)
2018-08-12 15:05:57.560 55479 ERROR nova   File "/usr/lib/python2.7/dist-packages/kombu/utils/url.py", line 24, in _parse_url
2018-08-12 15:05:57.560 55479 ERROR nova     return (scheme, unquote(parts.hostname or '') or None, parts.port,
2018-08-12 15:05:57.560 55479 ERROR nova   File "/usr/lib/python2.7/urlparse.py", line 113, in port
2018-08-12 15:05:57.560 55479 ERROR nova     port = int(port, 10)
2018-08-12 15:05:57.560 55479 ERROR nova ValueError: invalid literal for int() with base 10: 'None'
2018-08-12 15:05:57.560 55479 ERROR nova