[Bug 2064190] Re: Failed to pre-delete resources for cluster XXXX

[Felipe Reyes]

** Changed in: cloud-archive/victoria
       Status: New => Won't Fix

** Changed in: cloud-archive/wallaby
       Status: New => Won't Fix

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https://bugs.launchpad.net/bugs/2064190

Title:
  Failed to pre-delete resources for cluster XXXX

Status in Ubuntu Cloud Archive:
  Invalid
Status in Ubuntu Cloud Archive ussuri series:
  New
Status in Ubuntu Cloud Archive victoria series:
  Won't Fix
Status in Ubuntu Cloud Archive wallaby series:
  Won't Fix
Status in magnum package in Ubuntu:
  Invalid
Status in magnum source package in Focal:
  New

Bug description:
  [Impact]

  When deleting a cluster (k8s) and the load balancer associated to it
  has already been deleted, a 404 error is returned by Heat which raises
  a heatclient.exc.HTTPNotFound exception.

  Full stack trace:

  [req-7a8d257d-9cca-4d2d-b108-de8f33f60ae1 - - - - -] Exception during message handling: magnum.common.exception.PreDeletionFailed: Failed to pre-delete resources for cluster 6d553e2f-74bb-4dbe-9fd1-1a123b76530b, error: ERROR: The Stack (37032d90-66f1-41dd-b584-67d10f438bd9) could not be found..
  Traceback (most recent call last):
    File "/usr/lib/python3/dist-packages/magnum/common/octavia.py", line 109, in delete_loadbalancers
      lb_resources = heat_client.resources.list(
    File "/usr/lib/python3/dist-packages/heatclient/v1/resources.py", line 70, in list
      return self._list(url, "resources")
    File "/usr/lib/python3/dist-packages/heatclient/common/base.py", line 114, in _list
      body = self.client.get(url).json()
    File "/usr/lib/python3/dist-packages/heatclient/common/http.py", line 289, in get
      return self.client_request("GET", url, **kwargs)
    File "/usr/lib/python3/dist-packages/heatclient/common/http.py", line 282, in client_request
      resp, body = self.json_request(method, url, **kwargs)
    File "/usr/lib/python3/dist-packages/heatclient/common/http.py", line 271, in json_request
      resp = self._http_request(url, method, **kwargs)
    File "/usr/lib/python3/dist-packages/heatclient/common/http.py", line 234, in _http_request
      raise exc.from_response(resp)
  heatclient.exc.HTTPNotFound: ERROR: The Stack (37032d90-66f1-41dd-b584-67d10f438bd9) could not be found.

  During handling of the above exception, another exception occurred:

  Traceback (most recent call last):
    File "/usr/lib/python3/dist-packages/oslo_messaging/rpc/server.py", line 165, in _process_incoming
      res = self.dispatcher.dispatch(message)
    File "/usr/lib/python3/dist-packages/oslo_messaging/rpc/dispatcher.py", line 276, in dispatch
      return self._do_dispatch(endpoint, method, ctxt, args)
    File "/usr/lib/python3/dist-packages/oslo_messaging/rpc/dispatcher.py", line 196, in _do_dispatch
      result = func(ctxt, **new_args)
    File "/usr/lib/python3/dist-packages/magnum/conductor/handlers/cluster_conductor.py", line 191, in cluster_delete
      cluster_driver.delete_cluster(context, cluster)
    File "/usr/lib/python3/dist-packages/magnum/drivers/heat/driver.py", line 162, in delete_cluster
      self.pre_delete_cluster(context, cluster)
    File "/usr/lib/python3/dist-packages/magnum/drivers/heat/driver.py", line 307, in pre_delete_cluster
      octavia.delete_loadbalancers(context, cluster)
    File "/usr/lib/python3/dist-packages/magnum/common/octavia.py", line 130, in delete_loadbalancers
      raise exception.PreDeletionFailed(cluster_uuid=cluster.uuid,
  magnum.common.exception.PreDeletionFailed: Failed to pre-delete resources for cluster 6d553e2f-74bb-4dbe-9fd1-1a123b76530b, error: ERROR: The Stack (37032d90-66f1-41dd-b584-67d10f438bd9) could not be found..
  2024-03-12 14:38:35.878 3553570 ERROR oslo_messaging.rpc.server

  [ Test Plan ]

  TBD

  [ Where problems could occur ]

  TBD

  [Other Info]

  This issue has been fixed in Magnum by commit
  https://opendev.org/openstack/magnum/commit/4888f706c8a0280971df398cbc1ff06ad5d63e7f
  ( https://review.opendev.org/c/openstack/magnum/+/818563 ), this was
  released in Magnum-14.0.0 (Yoga release) and backported to 13.1.0
  (Xena), and even when it was backported into the stable/wallaby branch
  ( https://review.opendev.org/c/openstack/magnum/+/820334 ), no
  releases were cut after it was merged

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