Volume based amphora

I misstated the section.
These configuration options should be in the [controller_worker] section.

Ok, I manually added these options to the octavia.conf file (actually I forked the charm and changed the template):

[controller_worker]
<...>
# defaults are: size=16GB, type=None, create_retry_interval=5, create_timeout=300, create_max_retries=5
volume_driver = volume_cinder_driver
volume_size = 16
volume_type = usc01-az01-abs-octavia
volume_create_retry_interval = 5
volume_create_timeout = 300
volume_create_max_retries = 5

The usc01-az01-abs-octavia type exists:

ubuntu@jumphost:~/2021-04-12-TCS-Prod1PCB-215965$ openstack volume type list
+--------------------------------------+------------------------+-----------+
| ID | Name | Is Public |
+--------------------------------------+------------------------+-----------+
| 884217ee-d402-4644-b421-931517025172 | usc01-az01-abs-octavia | True |
| 6af193ca-970d-4b78-9b0d-b90bbceced93 | usc01-az01-abs-stable1 | True |
| a45fe4b1-ac8b-40d8-b3c1-45b00c64b075 | usc01-az01-abs-stable2 | True |
| 5e44595b-012c-41b3-a842-b8c1637a4000 | usc01-az01-abs-arbor | True |
+--------------------------------------+------------------------+-----------+

ubuntu@jumphost:~/2021-04-12-TCS-Prod1PCB-215965$ openstack volume type show usc01-az01-abs-octavia
+--------------------+------------------------------------------------------------------------------------------+
| Field | Value |
+--------------------+------------------------------------------------------------------------------------------+
| access_project_ids | None |
| description | None |
| id | 884217ee-d402-4644-b421-931517025172 |
| is_public | True |
| name | usc01-az01-abs-octavia |
| properties | RESKEY:availability_zones='us-central-1-az01', volume_backend_name='cinder-ceph-stable2' |
| qos_specs_id | None |
+--------------------+------------------------------------------------------------------------------------------+

But when trying to create loadbalancers, I get this error:

2021-05-25 17:29:16.550 3666784 ERROR oslo_messaging.rpc.server taskflow.exceptions.WrappedFailure: WrappedFailure: [Failure: octavia.common.exceptions.ComputeBuildException: Failed to build compute instance due to: Multiattach volumes are only supported starting with compute API version 2.60. (HTTP 400) (Request-ID: req-16ce1668-84f6-4e88-84db-724cc3bc1538), Failure: octavia.common.exceptions.ComputeBuildException: Failed to build compute instance due to: Multiattach volumes are only supported starting with compute API version 2.60. (HTTP 400) (Request-ID: req-bdae919c-19c2-4ff5-b770-00a8d54a5f18)]

As y...

@Andre, can you do an 'openstack volume show' on the created volume? I wonder if that will have any hints.

^ That might be difficult to catch as octavia/compute/drivers/nova_driver.py deletes the volume if amphora creation fails.

If this is a test system you could comment out the volume deletion code in the exception handling code, then 'openstack volume show' to see what it looks like.

The problem is that you've specified the volume_type options in the controller_worker section of the config file. The following options for Cinder can be specified in the [cinder] config section (though the documentation does not clearly state this, the code does). Specifying them in the [controller_worker] will not yield the results you want. The volume is likely getting created with the default volume type - which I suspect has multiattach enabled.

The correct settings would have:

[controller_worker]
...
volume_driver = volume_cinder_driver
...

[cinder]
volume_size = 16
volume_type = <volume_type>
volume_create_retry_interval = 5
volume_create_timeout = 300
volume_create_max_retries = 5

Also, since you're using the default for all values except volume_type in the [cinder] block, you really only need to specify that one.

Ok, that worked well. Thank you!

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/charm-octavia/+/810567

Change abandoned by "Nicholas Njihia <email address hidden>" on branch: master
Review: https://review.opendev.org/c/openstack/charm-octavia/+/810567

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/charm-octavia/+/811700

Change abandoned by "Nicholas Njihia <email address hidden>" on branch: master
Review: https://review.opendev.org/c/openstack/charm-octavia/+/811700