Use of k8s.io namespace for API group in Kubernetes CRDs needs approval

[trisberg]

In order to use k8s.io namespace in the API group for CRDs KEDA would need to have approval and add an "api-approved.kubernetes.io" annotation - see kubernetes/enhancements#1111

One option is to change the API group to use a domain like keda.sh that is owned by the project.

Expected Behavior

KEDA CRDs conform to the Kubernetes API Review Process

Actual Behavior

The KEDA CRDs deployed to Kubernetes v1.16.0 and later have the following failed status condition:

  - lastTransitionTime: "2020-01-21T15:22:05Z"
    message: protected groups must have approval annotation "api-approved.kubernetes.io",
      see https://github.com/kubernetes/enhancements/pull/1111
    reason: MissingAnnotation
    status: "False"
    type: KubernetesAPIApprovalPolicyConformant

Steps to Reproduce the Problem

1. Deploy the KEDA CRDs to a Kubernetes v1.16.x cluster
2. Check the status condition KubernetesAPIApprovalPolicyConformant of the CRDs using kubectl describe crd/scaledobjects.keda.k8s.io

Specifications

• Version: v1.0
• Platform: Kubernetes v1.16 and later
• Scaler(s):

[scothis]

While a breaking change, I'd suggest renaming the api group from keda.k8s.io to keda.sh

[tomkerkhove]

Good point, thanks. We're adding this to our v2.0 release!

[tomkerkhove]

I was thinking this through a bit more and what if we:

1. Introduce new CRDs in v1.2 under keda.sh
2. Remove current CRD in v2.0

That way we are already moving towards the new approach, but don't have to rush a 2.0 release until we bundle it with more breaking changes.

Would that be ok for you or do you think this should be fixed ASAP?

/cc @jeffhollan @ahmelsayed

[zroubalik]

merged into v2 branch