In RDO, we're hitting the same issue when testing promotion of:
python-amqp-5.0.2-1.el8
python-kombu-5.0.2-1.el8
python-vine-5.0.0-2.el8

in https://review.rdoproject.org/r/#/c/31607/


https://logserver.rdoproject.org/07/31607/7/check/validate-buildsys-tags-wallaby-testing-packstack-scenario001-centos8/3b6984c/logs/weirdo-project/logs/nova/nova-compute.log.txt.gz

2021-01-21 11:44:34.298 90601 ERROR nova Traceback (most recent call last):
2021-01-21 11:44:34.298 90601 ERROR nova   File "/usr/bin/nova-compute", line 10, in <module>
2021-01-21 11:44:34.298 90601 ERROR nova     sys.exit(main())
2021-01-21 11:44:34.298 90601 ERROR nova   File "/usr/lib/python3.6/site-packages/nova/cmd/compute.py", line 59, in main
2021-01-21 11:44:34.298 90601 ERROR nova     topic=compute_rpcapi.RPC_TOPIC)
2021-01-21 11:44:34.298 90601 ERROR nova   File "/usr/lib/python3.6/site-packages/nova/service.py", line 256, in create
2021-01-21 11:44:34.298 90601 ERROR nova     periodic_interval_max=periodic_interval_max)
2021-01-21 11:44:34.298 90601 ERROR nova   File "/usr/lib/python3.6/site-packages/nova/service.py", line 115, in __init__
2021-01-21 11:44:34.298 90601 ERROR nova     conductor_api.wait_until_ready(context.get_admin_context())
2021-01-21 11:44:34.298 90601 ERROR nova     timeout=timeout)
2021-01-21 11:44:34.298 90601 ERROR nova   File "/usr/lib/python3.6/site-packages/nova/baserpc.py", line 58, in ping
2021-01-21 11:44:34.298 90601 ERROR nova     return cctxt.call(context, 'ping', arg=arg_p)
2021-01-21 11:44:34.298 90601 ERROR nova   File "/usr/lib/python3.6/site-packages/oslo_messaging/rpc/client.py", line 179, in call
2021-01-21 11:44:34.298 90601 ERROR nova     transport_options=self.transport_options)
2021-01-21 11:44:34.298 90601 ERROR nova   File "/usr/lib/python3.6/site-packages/oslo_messaging/transport.py", line 128, in _send
2021-01-21 11:44:34.298 90601 ERROR nova     transport_options=transport_options)
2021-01-21 11:44:34.298 90601 ERROR nova   File "/usr/lib/python3.6/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 654, in send
2021-01-21 11:44:34.298 90601 ERROR nova     transport_options=transport_options)
2021-01-21 11:44:34.298 90601 ERROR nova   File "/usr/lib/python3.6/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 598, in _send
2021-01-21 11:44:34.298 90601 ERROR nova     msg.update({'_reply_q': self._get_reply_q()})
2021-01-21 11:44:34.298 90601 ERROR nova   File "/usr/lib/python3.6/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 579, in _get_reply_q
2021-01-21 11:44:34.298 90601 ERROR nova     conn = self._get_connection(rpc_common.PURPOSE_LISTEN)
2021-01-21 11:44:34.298 90601 ERROR nova   File "/usr/lib/python3.6/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 570, in _get_connection
2021-01-21 11:44:34.298 90601 ERROR nova     purpose=purpose)
2021-01-21 11:44:34.298 90601 ERROR nova   File "/usr/lib/python3.6/site-packages/oslo_messaging/_drivers/common.py", line 425, in __init__
2021-01-21 11:44:34.298 90601 ERROR nova     self.connection = connection_pool.create(purpose)
2021-01-21 11:44:34.298 90601 ERROR nova   File "/usr/lib/python3.6/site-packages/oslo_messaging/_drivers/pool.py", line 146, in create
2021-01-21 11:44:34.298 90601 ERROR nova     return self.connection_cls(self.conf, self.url, purpose)
2021-01-21 11:44:34.298 90601 ERROR nova   File "/usr/lib/python3.6/site-packages/oslo_messaging/_drivers/impl_rabbit.py", line 620, in __init__
2021-01-21 11:44:34.298 90601 ERROR nova     self.ensure_connection()
2021-01-21 11:44:34.298 90601 ERROR nova   File "/usr/lib/python3.6/site-packages/oslo_messaging/_drivers/impl_rabbit.py", line 737, in ensure_connection
2021-01-21 11:44:34.298 90601 ERROR nova     self.connection.ensure_connection(errback=on_error)
2021-01-21 11:44:34.298 90601 ERROR nova   File "/usr/lib/python3.6/site-packages/kombu/connection.py", line 383, in ensure_connection
2021-01-21 11:44:34.298 90601 ERROR nova     self._ensure_connection(*args, **kwargs)
2021-01-21 11:44:34.298 90601 ERROR nova   File "/usr/lib/python3.6/site-packages/kombu/connection.py", line 439, in _ensure_connection
2021-01-21 11:44:34.298 90601 ERROR nova     callback, timeout=timeout
2021-01-21 11:44:34.298 90601 ERROR nova   File "/usr/lib/python3.6/site-packages/kombu/utils/functional.py", line 325, in retry_over_time
2021-01-21 11:44:34.298 90601 ERROR nova     return fun(*args, **kwargs)
2021-01-21 11:44:34.298 90601 ERROR nova   File "/usr/lib/python3.6/site-packages/kombu/connection.py", line 866, in _connection_factory
2021-01-21 11:44:34.298 90601 ERROR nova     self._connection = self._establish_connection()
2021-01-21 11:44:34.298 90601 ERROR nova   File "/usr/lib/python3.6/site-packages/kombu/connection.py", line 801, in _establish_connection
2021-01-21 11:44:34.298 90601 ERROR nova     conn = self.transport.establish_connection()
2021-01-21 11:44:34.298 90601 ERROR nova   File "/usr/lib/python3.6/site-packages/kombu/transport/pyamqp.py", line 128, in establish_connection
2021-01-21 11:44:34.298 90601 ERROR nova     conn.connect()
2021-01-21 11:44:34.298 90601 ERROR nova   File "/usr/lib/python3.6/site-packages/amqp/connection.py", line 322, in connect
2021-01-21 11:44:34.298 90601 ERROR nova     self.transport.connect()
2021-01-21 11:44:34.298 90601 ERROR nova     self.transport.connect()
2021-01-21 11:44:34.298 90601 ERROR nova   File "/usr/lib/python3.6/site-packages/amqp/transport.py", line 86, in connect
2021-01-21 11:44:34.298 90601 ERROR nova     self.socket_settings, self.read_timeout, self.write_timeout,
2021-01-21 11:44:34.298 90601 ERROR nova   File "/usr/lib/python3.6/site-packages/amqp/transport.py", line 196, in _init_socket
2021-01-21 11:44:34.298 90601 ERROR nova     self._setup_transport()
2021-01-21 11:44:34.298 90601 ERROR nova   File "/usr/lib/python3.6/site-packages/amqp/transport.py", line 341, in _setup_transport
2021-01-21 11:44:34.298 90601 ERROR nova     self.sock = self._wrap_socket(self.sock, **self.sslopts)
2021-01-21 11:44:34.298 90601 ERROR nova     context.check_hostname = True
2021-01-21 11:44:34.298 90601 ERROR nova ValueError: check_hostname needs a SSL context with either CERT_OPTIONAL or CERT_REQUIRED
2021-01-21 11:44:34.298 90601 ERROR nova
2021-01-21 11:44:38.163 90707 CRITICAL nova [req-353c51ba-881b-482b-b051-b152beabaa7b - - - - -] Unhandled error: ValueError: check_hostname needs a SSL context with either CERT_OPTIONAL or CERT_REQUIRED