Denied permission when mounting dynamic volume to the cache on GKE

[mcbenjemaa]

What happened?

I would like to use crossplane with multiple providers, which means that cache size will be increased.
I used a PVC on GKE to make crossplane save caches in a volume instead of in memory.

Using crossplane values to create a pvc

packageCache:
  medium: "crossplane"
  sizeLimit: 1Gi
  pvc: "crossplane"

this will cause an issue, if you check the error in the pkgrev

cannot initialize parser backend: failed to store package in cache: open /cache/crossplane-provider-helm-d29c7a1e7fbb.xpkg: permission denied

How can we reproduce it?

Deploy crossplane on GKE and use pvc that provision dynamic pv, then deploy any provider.

What environment did it happen in?

Crossplane version:

• Cloud provider or hardware configuration: GCP
• Kubernetes version (use kubectl version): "v1.21.2"
• Kubernetes distribution (e.g. Tectonic, GKE, OpenShift): GKE