Kubernetes - setting custom permissions/file ownership per volume (and not per pod)

One solution is to use init-container to change permissions of mounted directories.

The init-container would need to mount both volumes (from both containers), and do the needed chown/chmod operations.

Drawbacks:

• extra container that needs to be aware of other containers' specific (ie. uid/gid)
• init container needs to run as root to perform chown