Openstack containers prepare parameter failed

Issue

• We generated containers-prepare-parameter.yaml with the following command:

$ openstack tripleo container image prepare default --local-push-destination --output-env-file containers-prepare-parameter.yaml
parameter_defaults:
  ContainerImagePrepare:
  - push_destination: true
    set:
      ceph_alertmanager_image: ose-prometheus-alertmanager
      ceph_alertmanager_namespace: registry.redhat.io/openshift4
      ceph_alertmanager_tag: 4.1
      ceph_grafana_image: rhceph-3-dashboard-rhel7
      ceph_grafana_namespace: registry.redhat.io/rhceph
      ceph_grafana_tag: 3
      ceph_image: rhceph-4-rhel8
      ceph_namespace: registry.redhat.io/rhceph
      ceph_node_exporter_image: ose-prometheus-node-exporter
      ceph_node_exporter_namespace: registry.redhat.io/openshift4
      ceph_node_exporter_tag: v4.1
      ceph_prometheus_image: ose-prometheus
      ceph_prometheus_namespace: registry.redhat.io/openshift4
      ceph_prometheus_tag: 4.1
      ceph_tag: latest
      name_prefix: openstack-
      name_suffix: ''
      namespace: registry.redhat.io/rhosp-rhel8
      neutron_driver: ovn
      rhel_containers: false
      tag: '16.0'
    tag_from_label: '{version}-{release}'
  ContainerImageRegistryLogin: true
  ContainerImageRegistryCredentials:
    registry.redhat.io:
      xxxxx: 'xxxxxx'

• Then we tried to upload the container images to the local registry but it failed with the following error:

$ sudo openstack tripleo container image prepare -e containers-prepare-parameter.yaml

Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0x7f0e6e4b7e48>: Failed to establish a new connection: [Errno 111] Connection refused',)': /v2/
Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0x7f0e6e4b70b8>: Failed to establish a new connection: [Errno 111] Connection refused',)': /v2/
Exception occured while running the command
concurrent.futures.process._RemoteTraceback: 
"""
Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/urllib3/connection.py", line 159, in _new_conn
    (self._dns_host, self.port), self.timeout, **extra_kw)
  File "/usr/lib/python3.6/site-packages/urllib3/util/connection.py", line 80, in create_connection
    raise err
  File "/usr/lib/python3.6/site-packages/urllib3/util/connection.py", line 70, in create_connection
    sock.connect(sa)
ConnectionRefusedError: [Errno 111] Connection refused

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/urllib3/connectionpool.py", line 600, in urlopen
    chunked=chunked)
  File "/usr/lib/python3.6/site-packages/urllib3/connectionpool.py", line 343, in _make_request
    self._validate_conn(conn)
  File "/usr/lib/python3.6/site-packages/urllib3/connectionpool.py", line 839, in _validate_conn
    conn.connect()
  File "/usr/lib/python3.6/site-packages/urllib3/connection.py", line 301, in connect
    conn = self._new_conn()
  File "/usr/lib/python3.6/site-packages/urllib3/connection.py", line 168, in _new_conn
    self, "Failed to establish a new connection: %s" % e)
urllib3.exceptions.NewConnectionError: <urllib3.connection.VerifiedHTTPSConnection object at 0x7f0e6e4654e0>: Failed to establish a new connection: [Errno 111] Connection refused

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/requests/adapters.py", line 449, in send
    timeout=timeout
  File "/usr/lib/python3.6/site-packages/urllib3/connectionpool.py", line 667, in urlopen
    **response_kw)
  File "/usr/lib/python3.6/site-packages/urllib3/connectionpool.py", line 667, in urlopen
    **response_kw)
  File "/usr/lib/python3.6/site-packages/urllib3/connectionpool.py", line 667, in urlopen
    **response_kw)
  [Previous line repeated 5 more times]
  File "/usr/lib/python3.6/site-packages/urllib3/connectionpool.py", line 638, in urlopen
    _stacktrace=sys.exc_info()[2])
  File "/usr/lib/python3.6/site-packages/urllib3/util/retry.py", line 399, in increment
    raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='localhost', port=8787): Max retries exceeded with url: /v2/ (Caused by NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0x7f0e6e4654e0>: Failed to establish a new connection: [Errno 111] Connection refused',))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib64/python3.6/concurrent/futures/process.py", line 175, in _process_worker
    r = call_item.fn(*call_item.args, **call_item.kwargs)
  File "/usr/lib64/python3.6/concurrent/futures/process.py", line 153, in _process_chunk
    return [fn(*args) for args in chunk]
  File "/usr/lib64/python3.6/concurrent/futures/process.py", line 153, in <listcomp>
    return [fn(*args) for args in chunk]
  File "/usr/lib/python3.6/site-packages/tripleo_common/image/image_uploader.py", line 2311, in upload_task
    return uploader.upload_image(task)
  File "/usr/lib/python3.6/site-packages/tripleo_common/image/image_uploader.py", line 1279, in upload_image
    password=target_password
  File "/usr/lib/python3.6/site-packages/tenacity/__init__.py", line 292, in wrapped_f
    return self.call(f, *args, **kw)
  File "/usr/lib/python3.6/site-packages/tenacity/__init__.py", line 358, in call
    do = self.iter(retry_state=retry_state)
  File "/usr/lib/python3.6/site-packages/tenacity/__init__.py", line 331, in iter
    raise retry_exc.reraise()
  File "/usr/lib/python3.6/site-packages/tenacity/__init__.py", line 167, in reraise
    raise self.last_attempt.result()
  File "/usr/lib64/python3.6/concurrent/futures/_base.py", line 425, in result
    return self.__get_result()
  File "/usr/lib64/python3.6/concurrent/futures/_base.py", line 384, in __get_result
    raise self._exception
  File "/usr/lib/python3.6/site-packages/tenacity/__init__.py", line 361, in call
    result = fn(*args, **kwargs)
  File "/usr/lib/python3.6/site-packages/tripleo_common/image/image_uploader.py", line 426, in authenticate
    r = session.get(url, timeout=30)
  File "/usr/lib/python3.6/site-packages/requests/sessions.py", line 546, in get
    return self.request('GET', url, **kwargs)
  File "/usr/lib/python3.6/site-packages/requests/sessions.py", line 533, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/lib/python3.6/site-packages/requests/sessions.py", line 646, in send
    r = adapter.send(request, **kwargs)
  File "/usr/lib/python3.6/site-packages/requests/adapters.py", line 516, in send
    raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: HTTPSConnectionPool(host='localhost', port=8787): Max retries exceeded with url: /v2/ (Caused by NewConnectionError('<urllib3.connection.VerifiedHTTPSConnection object at 0x7f0e6e4654e0>: Failed to establish a new connection: [Errno 111] Connection refused',))
"""

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/tripleoclient/command.py", line 32, in run
    super(Command, self).run(parsed_args)
  File "/usr/lib/python3.6/site-packages/osc_lib/command/command.py", line 41, in run
    return super(Command, self).run(parsed_args)
  File "/usr/lib/python3.6/site-packages/cliff/command.py", line 185, in run
    return_code = self.take_action(parsed_args) or 0
  File "/usr/lib/python3.6/site-packages/tripleoclient/v1/container_image.py", line 965, in take_action
    cleanup=parsed_args.cleanup, lock=lock)
  File "/usr/lib/python3.6/site-packages/tripleo_common/image/kolla_builder.py", line 235, in container_images_prepare_multi
    uploader.upload()
  File "/usr/lib/python3.6/site-packages/tripleo_common/image/image_uploader.py", line 272, in upload
    uploader.run_tasks()
  File "/usr/lib/python3.6/site-packages/tripleo_common/image/image_uploader.py", line 2252, in run_tasks
    for result in p.map(upload_task, self.upload_tasks):
  File "/usr/lib64/python3.6/concurrent/futures/process.py", line 366, in _chain_from_iterable_of_lists
    for element in iterable:
  File "/usr/lib64/python3.6/concurrent/futures/_base.py", line 586, in result_iterator
    yield fs.pop().result()
  File "/usr/lib64/python3.6/concurrent/futures/_base.py", line 432, in result
    return self.__get_result()
  File "/usr/lib64/python3.6/concurrent/futures/_base.py", line 384, in __get_result
    raise self._exception
requests.exceptions.ConnectionError: None: Max retries exceeded with url: /v2/ (Caused by None)
None: Max retries exceeded with url: /v2/ (Caused by None)