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[Bug 1911891] [NEW] Post live migration at destination failed:

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Jake Hill <1911891@xxxxxxxxxxxxxxxxxx>
Date: Fri, 15 Jan 2021 10:16:43 -0000
Reply-to: Bug 1911891 <1911891@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Public bug reported:

nova 2:21.1.0-0ubuntu1

Recently migrated from OVS to OVN networking.

Performing a series of live migrations (block migrations) to evacuate a
broken hypervisor. Most of these have succeeded or have failed for
understandable reasons. One of the migrations is stuck in this strange
state, however. The instance UUID in this case is 1eb3c33c-8c2b-
4d28-9050-70ac740ceb34.

$ nova migration-list --instance-uuid 1eb3c33c-8c2b-4d28-9050-70ac740ceb34
+-----+--------------------------------------+-------------+-------------+----------------+--------------+-----------------+-----------+--------------------------------------+------------+------------+----------------------------+----------------------------+----------------+----------------------------------+----------------------------------+
| Id  | UUID                                 | Source Node | Dest Node   | Source Compute | Dest Compute | Dest Host       | Status    | Instance UUID                        | Old Flavor | New Flavor | Created At                 | Updated At                 | Type           | Project ID                       | User ID                          |
+-----+--------------------------------------+-------------+-------------+----------------+--------------+-----------------+-----------+--------------------------------------+------------+------------+----------------------------+----------------------------+----------------+----------------------------------+----------------------------------+
| 943 | f0013171-b3bf-4884-a94e-b627c48b1530 | oshv01.maas | oshv04.maas | oshv01         | oshv04.maas  | -               | completed | 1eb3c33c-8c2b-4d28-9050-70ac740ceb34 | 35         | 35         | 2021-01-14T14:20:34.000000 | 2021-01-14T18:00:21.000000 | live-migration | d25b3d096e5c47a3b1701b3fff2c2823 | 41f5b059d3bf4bebad08ffcabd0899bf |

This shows that this migration from oshv01 to oshv04 as "completed".
However, the task status for the instance still shows it in migration;

$ openstack server show 1eb3c33c-8c2b-4d28-9050-70ac740ceb34 -fvalue -cOS-EXT-SRV-ATTR:host
oshv01

$ openstack server show 1eb3c33c-8c2b-4d28-9050-70ac740ceb34 -fvalue -cOS-EXT-STS:task_state
migrating

The instance is apparently running on the intended destination oshv04
but nova apparently thinks it is still running on the source host
oshv01.

I can find some log messages from around the time the migration "almost
completed". In relation to the migration UUID I have;

/var/log/syslog.1:Jan 14 17:59:40 oshv04 nova-compute: 2021-01-14 17:59:40.714 2343417 INFO nova.compute.resource_tracker [req-4f8cf1b6-a022-4619-b1dc-2b4e92a35300 - - - - -] [instance: 1eb3c33c-8c2b-4d28-9050-70ac740ceb34] Updating resource usage from migration f0013171-b3bf-4884-a94e-b627c48b1530
/var/log/syslog.1:Jan 14 18:00:20 oshv01 nova-compute: 2021-01-14 18:00:20.511 2620747 INFO nova.compute.resource_tracker [req-e30fbdb7-7e5f-476b-b4f1-829ca65add60 - - - - -] [instance: 1eb3c33c-8c2b-4d28-9050-70ac740ceb34] Updating resource usage from migration f0013171-b3bf-4884-a94e-b627c48b1530
/var/log/syslog.1:Jan 14 18:00:21 oshv01 nova-compute: 2021-01-14 18:00:21.039 2620747 INFO nova.compute.resource_tracker [req-61749f8c-26d0-491a-8935-d8700d7a4de6 - - - - -] [instance: 1eb3c33c-8c2b-4d28-9050-70ac740ceb34] Updating resource usage from migration f0013171-b3bf-4884-a94e-b627c48b1530
/var/log/syslog.1:Jan 14 18:00:21 juju-533538-38-lxd-17 placement-api: 2021-01-14 18:00:21.193 1189353 INFO placement.requestlog [req-3ef495bb-1c3d-4a0c-9a2a-8c9253f3e842 74f0533fa60b4c03ba0e472b4a951b8c 0ccc5b9ded584deda3683e014cba8b67 - 174a4647a56b4d09bc6ab8952c0105f1 174a4647a56b4d09bc6ab8952c0105f1] 127.0.0.1 "GET /allocations/f0013171-b3bf-4884-a94e-b627c48b1530" status: 200 len: 264 microversion: 1.28
/var/log/syslog.1:Jan 14 18:00:21 juju-533538-38-lxd-17 placement-api: 2021-01-14 18:00:21.254 1189350 INFO placement.requestlog [req-3fc0ba8c-d8f8-4c23-8aea-563e9930df99 74f0533fa60b4c03ba0e472b4a951b8c 0ccc5b9ded584deda3683e014cba8b67 - 174a4647a56b4d09bc6ab8952c0105f1 174a4647a56b4d09bc6ab8952c0105f1] 127.0.0.1 "PUT /allocations/f0013171-b3bf-4884-a94e-b627c48b1530" status: 204 len: 0 microversion: 1.28
/var/log/syslog.1:Jan 14 18:00:21 oshv01 nova-compute: 2021-01-14 18:00:21.256 2620747 INFO nova.scheduler.client.report [req-61749f8c-26d0-491a-8935-d8700d7a4de6 - - - - -] Deleted allocation for migration f0013171-b3bf-4884-a94e-b627c48b1530

Also in relation to the instance UUID I have;

/var/log/syslog.1:Jan 14 18:00:19 oshv01 nova-compute: 2021-01-14
18:00:19.140 2620747 ERROR nova.compute.manager [req-61749f8c-
26d0-491a-8935-d8700d7a4de6 - - - - -] [instance: 1eb3c33c-8c2b-
4d28-9050-70ac740ceb34] Post live migration at destination oshv04.maas
failed:
nova.exception_Remote.NeutronAdminCredentialConfigurationInvalid_Remote:
Networking client is experiencing an unauthorized
exception.#012Traceback (most recent call last):#012#012  File
"/usr/lib/python3/dist-packages/nova/network/neutron.py", line 184, in
wrapper#012    ret = obj(*args, **kwargs)#012#012  File
"/usr/lib/python3/dist-packages/neutronclient/v2_0/client.py", line 269,
in _handle_fault_response#012    exception_handler_v20(status_code,
error_body)#012#012  File "/usr/lib/python3/dist-
packages/neutronclient/v2_0/client.py", line 91, in
exception_handler_v20#012    raise
client_exc(message=error_message,#012#012neutronclient.common.exceptions.Unauthorized:
401-{'error': {'code': 401, 'title': 'Unauthorized', 'message': 'The
request you have made requires authentication.'}}#012Neutron server
returns request_ids: ['req-3d23fb06-e68f-4131-821d-
10640141ba6e']#012#012#012During handling of the above exception,
another exception occurred:#012#012#012Traceback (most recent call
last):#012#012  File "/usr/lib/python3/dist-
packages/oslo_messaging/rpc/server.py", line 165, in
_process_incoming#012    res = self.dispatcher.dispatch(message)#012#012
File "/usr/lib/python3/dist-packages/oslo_messaging/rpc/dispatcher.py",
line 276, in dispatch#012    return self._do_dispatch(endpoint, method,
ctxt, args)#012#012  File "/usr/lib/python3/dist-
packages/oslo_messaging/rpc/dispatcher.py", line 196, in
_do_dispatch#012    result = func(ctxt, **new_args)#012#012  File
"/usr/lib/python3/dist-packages/nova/exception_wrapper.py", line 77, in
wrapped#012    _emit_exception_notification(#012#012  File
"/usr/lib/python3/dist-packages/oslo_utils/excutils.py", line 220, in
__exit__#012    self.force_reraise()#012#012  File "/usr/lib/python3
/dist-packages/oslo_utils/excutils.py", line 196, in force_reraise#012
six.reraise(self.type_, self.value, self.tb)#012#012  File
"/usr/lib/python3/dist-packages/six.py", line 703, in reraise#012
raise value#012#012  File "/usr/lib/python3/dist-
packages/nova/exception_wrapper.py", line 69, in wrapped#012    return
f(self, context, *args, **kw)#012#012  File "/usr/lib/python3/dist-
packages/nova/compute/utils.py", line 1447, in decorated_function#012
return function(self, context, *args, **kwargs)#012#012  File
"/usr/lib/python3/dist-packages/nova/compute/manager.py", line 216, in
decorated_function#012
compute_utils.add_instance_fault_from_exc(context,#012#012  File
"/usr/lib/python3/dist-packages/oslo_utils/excutils.py", line 220, in
__exit__#012    self.force_reraise()#012#012  File "/usr/lib/python3
/dist-packages/oslo_utils/excutils.py", line 196, in force_reraise#012
six.reraise(self.type_, self.value, self.tb)#012#012  File
"/usr/lib/python3/dist-packages/six.py", line 703, in reraise#012
raise value#012#012  File "/usr/lib/python3/dist-
packages/nova/compute/manager.py", line 205, in decorated_function#012
return function(self, context, *args, **kwargs)#012#012  File
"/usr/lib/python3/dist-packages/nova/compute/manager.py", line 8557, in
post_live_migration_at_destination#012
self.network_api.setup_networks_on_host(context, instance,#012#012  File
"/usr/lib/python3/dist-packages/nova/network/neutron.py", line 395, in
setup_networks_on_host#012    data = self.list_ports(context,
**search_opts)#012#012  File "/usr/lib/python3/dist-
packages/nova/network/neutron.py", line 1800, in list_ports#012
return get_client(context).list_ports(**search_opts)#012#012  File
"/usr/lib/python3/dist-packages/nova/network/neutron.py", line 184, in
wrapper#012    ret = obj(*args, **kwargs)#012#012  File
"/usr/lib/python3/dist-packages/neutronclient/v2_0/client.py", line 797,
in list_ports#012    return self.list('ports', self.ports_path,
retrieve_all,#012#012  File "/usr/lib/python3/dist-
packages/nova/network/neutron.py", line 184, in wrapper#012    ret =
obj(*args, **kwargs)#012#012  File "/usr/lib/python3/dist-
packages/neutronclient/v2_0/client.py", line 369, in list#012    for r
in self._pagination(collection, path, **params):#012#012  File
"/usr/lib/python3/dist-packages/neutronclient/v2_0/client.py", line 384,
in _pagination#012    res = self.get(path, params=params)#012#012  File
"/usr/lib/python3/dist-packages/nova/network/neutron.py", line 184, in
wrapper#012    ret = obj(*args, **kwargs)#012#012  File
"/usr/lib/python3/dist-packages/neutronclient/v2_0/client.py", line 353,
in get#012    return self.retry_request("GET", action,
body=body,#012#012  File "/usr/lib/python3/dist-
packages/nova/network/neutron.py", line 184, in wrapper#012    ret =
obj(*args, **kwargs)#012#012  File "/usr/lib/python3/dist-
packages/neutronclient/v2_0/client.py", line 330, in retry_request#012
return self.do_request(method, action, body=body,#012#012  File
"/usr/lib/python3/dist-packages/nova/network/neutron.py", line 184, in
wrapper#012    ret = obj(*args, **kwargs)#012#012  File
"/usr/lib/python3/dist-packages/neutronclient/v2_0/client.py", line 294,
in do_request#012    self._handle_fault_response(status_code, replybody,
resp)#012#012  File "/usr/lib/python3/dist-
packages/nova/network/neutron.py", line 200, in wrapper#012    raise
exception.NeutronAdminCredentialConfigurationInvalid()#012#012nova.exception.NeutronAdminCredentialConfigurationInvalid:
Networking client is experiencing an unauthorized
exception.#0122021-01-14 18:00:19.140 2620747 ERROR nova.compute.manager
[instance: 1eb3c33c-8c2b-4d28-9050-70ac740ceb34] Traceback (most recent
call last):#0122021-01-14 18:00:19.140 2620747 ERROR
nova.compute.manager [instance: 1eb3c33c-8c2b-4d28-9050-70ac740ceb34]
File "/usr/lib/python3/dist-packages/nova/compute/manager.py", line
8477, in _post_live_migration#0122021-01-14 18:00:19.140 2620747 ERROR
nova.compute.manager [instance: 1eb3c33c-8c2b-4d28-9050-70ac740ceb34]
self.compute_rpcapi.post_live_migration_at_destination(ctxt,#0122021-01-14
18:00:19.140 2620747 ERROR nova.compute.manager [instance: 1eb3c33c-
8c2b-4d28-9050-70ac740ceb34]   File "/usr/lib/python3/dist-
packages/nova/compute/rpcapi.py", line 915, in
post_live_migration_at_destination#0122021-01-14 18:00:19.140 2620747
ERROR nova.compute.manager [instance: 1eb3c33c-8c2b-
4d28-9050-70ac740ceb34]     return cctxt.call(ctxt,
'post_live_migration_at_destination',#0122021-01-14 18:00:19.140 2620747
ERROR nova.compute.manager [instance: 1eb3c33c-8c2b-
4d28-9050-70ac740ceb34]   File "/usr/lib/python3/dist-
packages/oslo_messaging/rpc/client.py", line 177, in call#0122021-01-14
18:00:19.140 2620747 ERROR nova.compute.manager [instance: 1eb3c33c-
8c2b-4d28-9050-70ac740ceb34]     self.transport._send(self.target,
msg_ctxt, msg,#0122021-01-14 18:00:19.140 2620747 ERROR
nova.compute.manager [instance: 1eb3c33c-8c2b-4d28-9050-70ac740ceb34]
File "/usr/lib/python3/dist-packages/oslo_messaging/transport.py", line
124, in _send#0122021-01-14 18:00:19.140 2620747 ERROR
nova.compute.manager [instance: 1eb3c33c-8c2b-4d28-9050-70ac740ceb34]
return self._driver.send(target, ctxt, message,#0122021-01-14
18:00:19.140 2620747 ERROR nova.compute.manager [instance: 1eb3c33c-
8c2b-4d28-9050-70ac740ceb34]   File "/usr/lib/python3/dist-
packages/oslo_messaging/_drivers/amqpdriver.py", line 652, in
send#0122021-01-14 18:00:19.140 2620747 ERROR nova.compute.manager
[instance: 1eb3c33c-8c2b-4d28-9050-70ac740ceb34]     return
self._send(target, ctxt, message, wait_for_reply, timeout,#0122021-01-14
18:00:19.140 2620747 ERROR nova.compute.manager [instance: 1eb3c33c-
8c2b-4d28-9050-70ac740ceb34]   File "/usr/lib/python3/dist-
packages/oslo_messaging/_drivers/amqpdriver.py", line 644, in
_send#0122021-01-14 18:00:19.140 2620747 ERROR nova.compute.manager
[instance: 1eb3c33c-8c2b-4d28-9050-70ac740ceb34]     raise
result#0122021-01-14 18:00:19.140 2620747 ERROR nova.compute.manager
[instance: 1eb3c33c-8c2b-4d28-9050-70ac740ceb34] nova.exception_Re

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1911891

Title:
  Post live migration at destination failed:

Status in OpenStack Compute (nova):
  New

Bug description:
  nova 2:21.1.0-0ubuntu1

  Recently migrated from OVS to OVN networking.

  Performing a series of live migrations (block migrations) to evacuate
  a broken hypervisor. Most of these have succeeded or have failed for
  understandable reasons. One of the migrations is stuck in this strange
  state, however. The instance UUID in this case is 1eb3c33c-8c2b-
  4d28-9050-70ac740ceb34.

  $ nova migration-list --instance-uuid 1eb3c33c-8c2b-4d28-9050-70ac740ceb34
  +-----+--------------------------------------+-------------+-------------+----------------+--------------+-----------------+-----------+--------------------------------------+------------+------------+----------------------------+----------------------------+----------------+----------------------------------+----------------------------------+
  | Id  | UUID                                 | Source Node | Dest Node   | Source Compute | Dest Compute | Dest Host       | Status    | Instance UUID                        | Old Flavor | New Flavor | Created At                 | Updated At                 | Type           | Project ID                       | User ID                          |
  +-----+--------------------------------------+-------------+-------------+----------------+--------------+-----------------+-----------+--------------------------------------+------------+------------+----------------------------+----------------------------+----------------+----------------------------------+----------------------------------+
  | 943 | f0013171-b3bf-4884-a94e-b627c48b1530 | oshv01.maas | oshv04.maas | oshv01         | oshv04.maas  | -               | completed | 1eb3c33c-8c2b-4d28-9050-70ac740ceb34 | 35         | 35         | 2021-01-14T14:20:34.000000 | 2021-01-14T18:00:21.000000 | live-migration | d25b3d096e5c47a3b1701b3fff2c2823 | 41f5b059d3bf4bebad08ffcabd0899bf |

  This shows that this migration from oshv01 to oshv04 as "completed".
  However, the task status for the instance still shows it in migration;

  $ openstack server show 1eb3c33c-8c2b-4d28-9050-70ac740ceb34 -fvalue -cOS-EXT-SRV-ATTR:host
  oshv01

  $ openstack server show 1eb3c33c-8c2b-4d28-9050-70ac740ceb34 -fvalue -cOS-EXT-STS:task_state
  migrating

  The instance is apparently running on the intended destination oshv04
  but nova apparently thinks it is still running on the source host
  oshv01.

  I can find some log messages from around the time the migration
  "almost completed". In relation to the migration UUID I have;

  /var/log/syslog.1:Jan 14 17:59:40 oshv04 nova-compute: 2021-01-14 17:59:40.714 2343417 INFO nova.compute.resource_tracker [req-4f8cf1b6-a022-4619-b1dc-2b4e92a35300 - - - - -] [instance: 1eb3c33c-8c2b-4d28-9050-70ac740ceb34] Updating resource usage from migration f0013171-b3bf-4884-a94e-b627c48b1530
  /var/log/syslog.1:Jan 14 18:00:20 oshv01 nova-compute: 2021-01-14 18:00:20.511 2620747 INFO nova.compute.resource_tracker [req-e30fbdb7-7e5f-476b-b4f1-829ca65add60 - - - - -] [instance: 1eb3c33c-8c2b-4d28-9050-70ac740ceb34] Updating resource usage from migration f0013171-b3bf-4884-a94e-b627c48b1530
  /var/log/syslog.1:Jan 14 18:00:21 oshv01 nova-compute: 2021-01-14 18:00:21.039 2620747 INFO nova.compute.resource_tracker [req-61749f8c-26d0-491a-8935-d8700d7a4de6 - - - - -] [instance: 1eb3c33c-8c2b-4d28-9050-70ac740ceb34] Updating resource usage from migration f0013171-b3bf-4884-a94e-b627c48b1530
  /var/log/syslog.1:Jan 14 18:00:21 juju-533538-38-lxd-17 placement-api: 2021-01-14 18:00:21.193 1189353 INFO placement.requestlog [req-3ef495bb-1c3d-4a0c-9a2a-8c9253f3e842 74f0533fa60b4c03ba0e472b4a951b8c 0ccc5b9ded584deda3683e014cba8b67 - 174a4647a56b4d09bc6ab8952c0105f1 174a4647a56b4d09bc6ab8952c0105f1] 127.0.0.1 "GET /allocations/f0013171-b3bf-4884-a94e-b627c48b1530" status: 200 len: 264 microversion: 1.28
  /var/log/syslog.1:Jan 14 18:00:21 juju-533538-38-lxd-17 placement-api: 2021-01-14 18:00:21.254 1189350 INFO placement.requestlog [req-3fc0ba8c-d8f8-4c23-8aea-563e9930df99 74f0533fa60b4c03ba0e472b4a951b8c 0ccc5b9ded584deda3683e014cba8b67 - 174a4647a56b4d09bc6ab8952c0105f1 174a4647a56b4d09bc6ab8952c0105f1] 127.0.0.1 "PUT /allocations/f0013171-b3bf-4884-a94e-b627c48b1530" status: 204 len: 0 microversion: 1.28
  /var/log/syslog.1:Jan 14 18:00:21 oshv01 nova-compute: 2021-01-14 18:00:21.256 2620747 INFO nova.scheduler.client.report [req-61749f8c-26d0-491a-8935-d8700d7a4de6 - - - - -] Deleted allocation for migration f0013171-b3bf-4884-a94e-b627c48b1530

  Also in relation to the instance UUID I have;

  /var/log/syslog.1:Jan 14 18:00:19 oshv01 nova-compute: 2021-01-14
  18:00:19.140 2620747 ERROR nova.compute.manager [req-61749f8c-
  26d0-491a-8935-d8700d7a4de6 - - - - -] [instance: 1eb3c33c-8c2b-
  4d28-9050-70ac740ceb34] Post live migration at destination oshv04.maas
  failed:
  nova.exception_Remote.NeutronAdminCredentialConfigurationInvalid_Remote:
  Networking client is experiencing an unauthorized
  exception.#012Traceback (most recent call last):#012#012  File
  "/usr/lib/python3/dist-packages/nova/network/neutron.py", line 184, in
  wrapper#012    ret = obj(*args, **kwargs)#012#012  File
  "/usr/lib/python3/dist-packages/neutronclient/v2_0/client.py", line
  269, in _handle_fault_response#012
  exception_handler_v20(status_code, error_body)#012#012  File
  "/usr/lib/python3/dist-packages/neutronclient/v2_0/client.py", line
  91, in exception_handler_v20#012    raise
  client_exc(message=error_message,#012#012neutronclient.common.exceptions.Unauthorized:
  401-{'error': {'code': 401, 'title': 'Unauthorized', 'message': 'The
  request you have made requires authentication.'}}#012Neutron server
  returns request_ids: ['req-3d23fb06-e68f-4131-821d-
  10640141ba6e']#012#012#012During handling of the above exception,
  another exception occurred:#012#012#012Traceback (most recent call
  last):#012#012  File "/usr/lib/python3/dist-
  packages/oslo_messaging/rpc/server.py", line 165, in
  _process_incoming#012    res =
  self.dispatcher.dispatch(message)#012#012  File "/usr/lib/python3
  /dist-packages/oslo_messaging/rpc/dispatcher.py", line 276, in
  dispatch#012    return self._do_dispatch(endpoint, method, ctxt,
  args)#012#012  File "/usr/lib/python3/dist-
  packages/oslo_messaging/rpc/dispatcher.py", line 196, in
  _do_dispatch#012    result = func(ctxt, **new_args)#012#012  File
  "/usr/lib/python3/dist-packages/nova/exception_wrapper.py", line 77,
  in wrapped#012    _emit_exception_notification(#012#012  File
  "/usr/lib/python3/dist-packages/oslo_utils/excutils.py", line 220, in
  __exit__#012    self.force_reraise()#012#012  File "/usr/lib/python3
  /dist-packages/oslo_utils/excutils.py", line 196, in force_reraise#012
  six.reraise(self.type_, self.value, self.tb)#012#012  File
  "/usr/lib/python3/dist-packages/six.py", line 703, in reraise#012
  raise value#012#012  File "/usr/lib/python3/dist-
  packages/nova/exception_wrapper.py", line 69, in wrapped#012    return
  f(self, context, *args, **kw)#012#012  File "/usr/lib/python3/dist-
  packages/nova/compute/utils.py", line 1447, in decorated_function#012
  return function(self, context, *args, **kwargs)#012#012  File
  "/usr/lib/python3/dist-packages/nova/compute/manager.py", line 216, in
  decorated_function#012
  compute_utils.add_instance_fault_from_exc(context,#012#012  File
  "/usr/lib/python3/dist-packages/oslo_utils/excutils.py", line 220, in
  __exit__#012    self.force_reraise()#012#012  File "/usr/lib/python3
  /dist-packages/oslo_utils/excutils.py", line 196, in force_reraise#012
  six.reraise(self.type_, self.value, self.tb)#012#012  File
  "/usr/lib/python3/dist-packages/six.py", line 703, in reraise#012
  raise value#012#012  File "/usr/lib/python3/dist-
  packages/nova/compute/manager.py", line 205, in decorated_function#012
  return function(self, context, *args, **kwargs)#012#012  File
  "/usr/lib/python3/dist-packages/nova/compute/manager.py", line 8557,
  in post_live_migration_at_destination#012
  self.network_api.setup_networks_on_host(context, instance,#012#012
  File "/usr/lib/python3/dist-packages/nova/network/neutron.py", line
  395, in setup_networks_on_host#012    data = self.list_ports(context,
  **search_opts)#012#012  File "/usr/lib/python3/dist-
  packages/nova/network/neutron.py", line 1800, in list_ports#012
  return get_client(context).list_ports(**search_opts)#012#012  File
  "/usr/lib/python3/dist-packages/nova/network/neutron.py", line 184, in
  wrapper#012    ret = obj(*args, **kwargs)#012#012  File
  "/usr/lib/python3/dist-packages/neutronclient/v2_0/client.py", line
  797, in list_ports#012    return self.list('ports', self.ports_path,
  retrieve_all,#012#012  File "/usr/lib/python3/dist-
  packages/nova/network/neutron.py", line 184, in wrapper#012    ret =
  obj(*args, **kwargs)#012#012  File "/usr/lib/python3/dist-
  packages/neutronclient/v2_0/client.py", line 369, in list#012    for r
  in self._pagination(collection, path, **params):#012#012  File
  "/usr/lib/python3/dist-packages/neutronclient/v2_0/client.py", line
  384, in _pagination#012    res = self.get(path, params=params)#012#012
  File "/usr/lib/python3/dist-packages/nova/network/neutron.py", line
  184, in wrapper#012    ret = obj(*args, **kwargs)#012#012  File
  "/usr/lib/python3/dist-packages/neutronclient/v2_0/client.py", line
  353, in get#012    return self.retry_request("GET", action,
  body=body,#012#012  File "/usr/lib/python3/dist-
  packages/nova/network/neutron.py", line 184, in wrapper#012    ret =
  obj(*args, **kwargs)#012#012  File "/usr/lib/python3/dist-
  packages/neutronclient/v2_0/client.py", line 330, in retry_request#012
  return self.do_request(method, action, body=body,#012#012  File
  "/usr/lib/python3/dist-packages/nova/network/neutron.py", line 184, in
  wrapper#012    ret = obj(*args, **kwargs)#012#012  File
  "/usr/lib/python3/dist-packages/neutronclient/v2_0/client.py", line
  294, in do_request#012    self._handle_fault_response(status_code,
  replybody, resp)#012#012  File "/usr/lib/python3/dist-
  packages/nova/network/neutron.py", line 200, in wrapper#012    raise
  exception.NeutronAdminCredentialConfigurationInvalid()#012#012nova.exception.NeutronAdminCredentialConfigurationInvalid:
  Networking client is experiencing an unauthorized
  exception.#0122021-01-14 18:00:19.140 2620747 ERROR
  nova.compute.manager [instance: 1eb3c33c-8c2b-4d28-9050-70ac740ceb34]
  Traceback (most recent call last):#0122021-01-14 18:00:19.140 2620747
  ERROR nova.compute.manager [instance: 1eb3c33c-8c2b-
  4d28-9050-70ac740ceb34]   File "/usr/lib/python3/dist-
  packages/nova/compute/manager.py", line 8477, in
  _post_live_migration#0122021-01-14 18:00:19.140 2620747 ERROR
  nova.compute.manager [instance: 1eb3c33c-8c2b-4d28-9050-70ac740ceb34]
  self.compute_rpcapi.post_live_migration_at_destination(ctxt,#0122021-01-14
  18:00:19.140 2620747 ERROR nova.compute.manager [instance: 1eb3c33c-
  8c2b-4d28-9050-70ac740ceb34]   File "/usr/lib/python3/dist-
  packages/nova/compute/rpcapi.py", line 915, in
  post_live_migration_at_destination#0122021-01-14 18:00:19.140 2620747
  ERROR nova.compute.manager [instance: 1eb3c33c-8c2b-
  4d28-9050-70ac740ceb34]     return cctxt.call(ctxt,
  'post_live_migration_at_destination',#0122021-01-14 18:00:19.140
  2620747 ERROR nova.compute.manager [instance: 1eb3c33c-8c2b-
  4d28-9050-70ac740ceb34]   File "/usr/lib/python3/dist-
  packages/oslo_messaging/rpc/client.py", line 177, in
  call#0122021-01-14 18:00:19.140 2620747 ERROR nova.compute.manager
  [instance: 1eb3c33c-8c2b-4d28-9050-70ac740ceb34]
  self.transport._send(self.target, msg_ctxt, msg,#0122021-01-14
  18:00:19.140 2620747 ERROR nova.compute.manager [instance: 1eb3c33c-
  8c2b-4d28-9050-70ac740ceb34]   File "/usr/lib/python3/dist-
  packages/oslo_messaging/transport.py", line 124, in
  _send#0122021-01-14 18:00:19.140 2620747 ERROR nova.compute.manager
  [instance: 1eb3c33c-8c2b-4d28-9050-70ac740ceb34]     return
  self._driver.send(target, ctxt, message,#0122021-01-14 18:00:19.140
  2620747 ERROR nova.compute.manager [instance: 1eb3c33c-8c2b-
  4d28-9050-70ac740ceb34]   File "/usr/lib/python3/dist-
  packages/oslo_messaging/_drivers/amqpdriver.py", line 652, in
  send#0122021-01-14 18:00:19.140 2620747 ERROR nova.compute.manager
  [instance: 1eb3c33c-8c2b-4d28-9050-70ac740ceb34]     return
  self._send(target, ctxt, message, wait_for_reply,
  timeout,#0122021-01-14 18:00:19.140 2620747 ERROR nova.compute.manager
  [instance: 1eb3c33c-8c2b-4d28-9050-70ac740ceb34]   File
  "/usr/lib/python3/dist-
  packages/oslo_messaging/_drivers/amqpdriver.py", line 644, in
  _send#0122021-01-14 18:00:19.140 2620747 ERROR nova.compute.manager
  [instance: 1eb3c33c-8c2b-4d28-9050-70ac740ceb34]     raise
  result#0122021-01-14 18:00:19.140 2620747 ERROR nova.compute.manager
  [instance: 1eb3c33c-8c2b-4d28-9050-70ac740ceb34] nova.exception_Re

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Follow ups

[Bug 1911891] Re: Post live migration at destination failed:
From: Launchpad Bug Tracker, 2021-04-13