This bug was initially created as a copy of Bug #1723051

I am copying this bug because: It impacts OSP14.



Description of problem:

Amphora load balancers fail to create.
Worker log show "Fernet key must be 32 url-safe base64-encoded bytes.

Version-Release number of selected component (if applicable):
OSP 15 RHOS_TRUNK-15.0-RHEL-8-20190619.n.1

How reproducible:
100%

Steps to Reproduce:
1. Deploy OSP 15 with Octavia enabled
2. Create loadbalancer


Actual results:

[...]
2019-06-21 03:13:59.870 18 WARNING octavia.controller.worker.controller_worker [-] Task 'STANDALONE-octavia-create-amp-for-lb-subflow-octavia-generate-serverpem' (2b6a2a25-396a-42bf-9f91-0e9fb1014deb) transitioned into state 'FAILURE' from state 'RUNNING'
12 predecessors (most recent first):
  Atom 'STANDALONE-octavia-create-amp-for-lb-subflow-octavia-create-amphora-indb' {'intention': 'EXECUTE', 'state': 'SUCCESS', 'requires': {}, 'provides': '7a8d9ce6-e033-4726-aac8-534b80843f1e'}
  |__Flow 'STANDALONE-octavia-create-amp-for-lb-subflow'
     |__Atom 'STANDALONE-octavia-get-amphora-for-lb-subflow-octavia-mapload-balancer-to-amphora' {'intention': 'EXECUTE', 'state': 'SUCCESS', 'requires': {'loadbalancer_id': '41e00d9d-ad66-4c46-a49d-e8cb852e0d9f', 'flavor': {}}, 'provides': None}
        |__Flow 'STANDALONE-octavia-get-amphora-for-lb-subflow'
           |__Flow 'STANDALONE-octavia-plug-net-subflow'
              |__Atom 'octavia.controller.worker.tasks.network_tasks.GetSubnetFromVIP' {'intention': 'EXECUTE', 'state': 'SUCCESS', 'requires': {'loadbalancer': <octavia.common.data_models.LoadBalancer object at 0x7f0ff40f0da0>}, 'provides': <octavia.network.data_models.Subnet object at 0x7f0ff4098208>}
                 |__Atom 'octavia.controller.worker.tasks.network_tasks.UpdateVIPSecurityGroup' {'intention': 'EXECUTE', 'state': 'SUCCESS', 'requires': {'loadbalancer': <octavia.common.data_models.LoadBalancer object at 0x7f0ff40f0da0>}, 'provides': None}
                    |__Atom 'octavia.controller.worker.tasks.database_tasks.UpdateVIPAfterAllocation' {'intention': 'EXECUTE', 'state': 'SUCCESS', 'requires': {'loadbalancer_id': '41e00d9d-ad66-4c46-a49d-e8cb852e0d9f', 'vip': <octavia.common.data_models.Vip object at 0x7f0ff4c033c8>}, 'provides': <octavia.common.data_models.LoadBalancer object at 0x7f0ff40f0da0>}
                       |__Atom 'octavia.controller.worker.tasks.network_tasks.AllocateVIP' {'intention': 'EXECUTE', 'state': 'SUCCESS', 'requires': {'loadbalancer': <octavia.common.data_models.LoadBalancer object at 0x7f0ff40f0ef0>}, 'provides': <octavia.common.data_models.Vip object at 0x7f0ff4c033c8>}
                          |__Atom 'reload-lb-before-allocate-vip' {'intention': 'EXECUTE', 'state': 'SUCCESS', 'requires': {'loadbalancer_id': '41e00d9d-ad66-4c46-a49d-e8cb852e0d9f'}, 'provides': <octavia.common.data_models.LoadBalancer object at 0x7f0ff40f0ef0>}
                             |__Atom 'octavia.controller.worker.tasks.lifecycle_tasks.LoadBalancerIDToErrorOnRevertTask' {'intention': 'EXECUTE', 'state': 'SUCCESS', 'requires': {'loadbalancer_id': '41e00d9d-ad66-4c46-a49d-e8cb852e0d9f'}, 'provides': None}
                                |__Flow 'octavia-create-loadbalancer-flow': ValueError: Fernet key must be 32 url-safe base64-encoded bytes.
2019-06-21 03:13:59.870 18 ERROR octavia.controller.worker.controller_worker Traceback (most recent call last):
2019-06-21 03:13:59.870 18 ERROR octavia.controller.worker.controller_worker   File "/usr/lib/python3.6/site-packages/taskflow/engines/action_engine/executor.py", line 53, in _execute_task
2019-06-21 03:13:59.870 18 ERROR octavia.controller.worker.controller_worker     result = task.execute(**arguments)
2019-06-21 03:13:59.870 18 ERROR octavia.controller.worker.controller_worker   File "/usr/lib/python3.6/site-packages/octavia/controller/worker/tasks/cert_task.py", line 50, in execute
2019-06-21 03:13:59.870 18 ERROR octavia.controller.worker.controller_worker     fer = fernet.Fernet(key)
2019-06-21 03:13:59.870 18 ERROR octavia.controller.worker.controller_worker   File "/usr/lib64/python3.6/site-packages/cryptography/fernet.py", line 37, in __init__
2019-06-21 03:13:59.870 18 ERROR octavia.controller.worker.controller_worker     "Fernet key must be 32 url-safe base64-encoded bytes."
2019-06-21 03:13:59.870 18 ERROR octavia.controller.worker.controller_worker ValueError: Fernet key must be 32 url-safe base64-encoded bytes.
2019-06-21 03:13:59.870 18 ERROR octavia.controller.worker.controller_worker 
2019-06-21 03:13:59.880 18 DEBUG octavia.controller.worker.controller_worker [-] Task 'STANDALONE-octavia-create-amp-for-lb-subflow-octavia-generate-serverpem' (2b6a2a25-396a-42bf-9f91-0e9fb1014deb) transitioned into state 'REVERTING' from state 'FAILURE' _task_receiver /usr/lib/python3.6/site-packages/taskflow/listeners/logging.py:194
2019-06-21 03:13:59.882 18 WARNING octavia.controller.worker.controller_worker [-] Task 'STANDALONE-octavia-create-amp-for-lb-subflow-octavia-generate-serverpem' (2b6a2a25-396a-42bf-9f91-0e9fb1014deb) transitioned into state 'REVERTED' from state 'REVERTING' with result 'None'
2019-06-21 03:13:59.884 18 DEBUG octavia.controller.worker.controller_worker [-] Task 'STANDALONE-octavia-create-amp-for-lb-subflow-octavia-create-amphora-indb' (2440e1c3-e310-44cd-8eb9-64a9cd20b85b) transitioned into state 'REVERTING' from state 'SUCCESS' _task_receiver /usr/lib/python3.6/site-packages/taskflow/listeners/logging.py:194
2019-06-21 03:13:59.884 18 WARNING octavia.controller.worker.tasks.database_tasks [-] Reverting create amphora in DB for amp id 7a8d9ce6-e033-4726-aac8-534b80843f1e 
2019-06-21 03:13:59.901 18 WARNING octavia.controller.worker.controller_worker [-] Task 'STANDALONE-octavia-create-amp-for-lb-subflow-octavia-create-amphora-indb' (2440e1c3-e310-44cd-8eb9-64a9cd20b85b) transitioned into state 'REVERTED' from state 'REVERTING' with result 'None'
[...]