[Bug 2077348] Re: Loadbalacer stuck in status PENDING_DELETE if TLS storage unavailable in cascade deletion

[Hua Zhang]

** Also affects: octavia (Ubuntu)
   Importance: Undecided
       Status: New

** Also affects: octavia (Ubuntu Jammy)
   Importance: Undecided
       Status: New

** Also affects: octavia (Ubuntu Plucky)
   Importance: Undecided
       Status: New

** Also affects: octavia (Ubuntu Focal)
   Importance: Undecided
       Status: New

** Also affects: octavia (Ubuntu Oracular)
   Importance: Undecided
       Status: New

** Also affects: octavia (Ubuntu Noble)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/2077348

Title:
  Loadbalacer stuck in status PENDING_DELETE if TLS storage unavailable
  in cascade deletion

Status in Ubuntu Cloud Archive:
  New
Status in octavia:
  Fix Released
Status in octavia package in Ubuntu:
  New
Status in octavia source package in Focal:
  New
Status in octavia source package in Jammy:
  New
Status in octavia source package in Noble:
  New
Status in octavia source package in Oracular:
  New
Status in octavia source package in Plucky:
  New

Bug description:
  Loadbalacer stuck in status PENDING_DELETE if TLS cert unavailable

  1. Create load balancer with TERMINATED_HTTPS listener
  2. Disable your TLS storage, or delete cert from storage
  3. Try to delete loadbalancer with cascade flag

  Error on logs:

  ```
  Unable to retrieve certificate(s) due to Could not retrieve certificate: <some id>
  Exception during message handling
  ```

  ```
  Traceback (most recent call last):
  File "/var/lib/openstack/lib/python3.10/site-packages/oslo_messaging/rpc/server.py", line 165, in _process_incoming, res = self.dispatcher.dispatch(message),
  File "/var/lib/openstack/lib/python3.10/site-packages/oslo_messaging/rpc/dispatcher.py", line 309, in dispatch, return self._do_dispatch(endpoint, method, ctxt, args), 
  File "/var/lib/openstack/lib/python3.10/site-packages/oslo_messaging/rpc/dispatcher.py", line 229, in _do_dispatch, result = func(ctxt, **new_args), 
  File "/var/lib/openstack/lib/python3.10/site-packages/octavia/controller/queue/v2/endpoints.py", line 56, in delete_load_balancer, self.worker.delete_load_balancer(loadbalancer, cascade), 
  File "/var/lib/openstack/lib/python3.10/site-packages/octavia/controller/worker/v2/controller_worker.py", line 387, in delete_load_balancer, listeners = flow_utils.get_listeners_on_lb(db_lb), 
  File "/var/lib/openstack/lib/python3.10/site-packages/octavia/controller/worker/v2/flows/flow_utils.py", line 52, in get_listeners_on_lb, prov_listener = provider_utils.db_listener_to_provider_listener(), 
  File "/var/lib/openstack/lib/python3.10/site-packages/octavia/api/drivers/utils.py", line 182, in db_listener_to_provider_listener, new_listener_dict = listener_dict_to_provider_dict(), 
  File "/var/lib/openstack/lib/python3.10/site-packages/octavia/api/drivers/utils.py", line 261, in listener_dict_to_provider_dict, with excutils.save_and_reraise_exception() as ctxt:, 
  File "/var/lib/openstack/lib/python3.10/site-packages/oslo_utils/excutils.py", line 227, in __exit__, self.force_reraise(), 
  File "/var/lib/openstack/lib/python3.10/site-packages/oslo_utils/excutils.py", line 200, in force_reraise, raise self.value, 
  File "/var/lib/openstack/lib/python3.10/site-packages/octavia/api/drivers/utils.py", line 258, in listener_dict_to_provider_dict, cert_dict = cert_parser.load_certificates_data(cert_manager) 
  File "/var/lib/openstack/lib/python3.10/site-packages/octavia/common/tls_utils/cert_parser.py", line 381, in load_certificates_data, raise exceptions.CertificateRetrievalException(, octavia.common.exceptions.CertificateRetrievalException: Could not retrieve certificate: ]

  ```

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