admissionregistration.k8s.io/v1beta1 ValidatingWebhookConfiguration is deprecated in v1.16+, unavailable in v1.22+

[sozercan]

Describe the solution you'd like
[A clear and concise description of what you want to happen.]
we should move to admissionregistration.k8s.io/v1

Anything else you would like to add:
[Miscellaneous information that will assist in solving the issue.]

Environment:

• Gatekeeper version:
• Kubernetes version: (use kubectl version):

[maxsmythe]

Do you know at which K8s version admissionregistration.k8s.io/v1 was introduced?

[sozercan]

I believe v1.16 https://v1-16.docs.kubernetes.io/docs/setup/release/notes/#api-changes

[maxsmythe]

Thanks!

We should move to v1 once support for v1.15 has sunset (not sure if it has or not), otherwise we will be breaking v1.15.

[sozercan]

Both v1.15 and v1.16 is already sunset https://kubernetes.io/blog/2020/08/31/kubernetes-1-19-feature-one-year-support/

[maxsmythe]

I mean in terms of versions GK supports

[ritazh]

Gatekeeper supported kubernetes versions should follow Kubernetes upstream:
https://github.com/open-policy-agent/gatekeeper/blob/master/docs/Release_Management.md#supported-kubernetes-versions

[maxsmythe]

Makes sense.

Practically speaking, Azure and GKE both still support creating v1.15 clusters (I haven't checked other cloud providers). Should we delay until v1.15 clusters have sunset in the wild to avoid breaking current users?

There shouldn't be any cost for waiting as K8s v1.22 won't be a thing for another ~1 year.