charm-cinder/hooks/identity-credentials-relation-changed
Trent Lloyd ba8d8fc3e1 Add identity-credentials relation support
Implement support for the identity-credentials relation as an
alternative way to get keystone credentials when we are not registering
a service endpoint via the identity-service relation.

This solves an issue where the image volume cache does not work when the
cinder volume service is deployed as a second cinder application
('cinder-volume') having enabled-services=volume set.

Previously the following items were missing from cinder.conf:
cinder_internal_tenant_project_id
cinder_internal_tenant_user_id

Resulting in the image cache not functioning with the following warnings:
Unable to get internal tenant context: Missing required config
parameters.
Unable to get Cinder internal context, will not use image-volume cache.

As there are now two possible interfaces to keystone ('identity-service'
and 'identity-credentials') any existing bundles that don't specify the
interface 'identity-service' when relating to keystone will fail to
deploy and will need to be updated.

Closes-Bug: #1978452
Change-Id: Ieef500c9c55eb3968b3e2e231a8ff6e2a5ec148d
2023-01-20 14:53:39 +08:00

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cinder_hooks.py