NewPDBLimits fails in 1.25+ k8s

[Noksa]

If we try to use karpenter-core on k8s 1.25+ we encouter the following problem when a new node is provisioned:

2022-11-24T08:53:42.773Z	ERROR	controller	Reconciler error	{"controller": "inflightchecks", "controllerGroup": "", "controllerKind": "Node", "Node": {"name":"kazoo5-first-db-kazoo5-first-couchdb-kazoodb-9ef87341"}, "namespace": "", "name": "kazoo5-first-db-kazoo5-first-couchdb-kazoodb-9ef87341", "reconcileID": "2720caef-d6e2-4802-88b6-9ef9693a4e7c", "error": "no matches for kind \"PodDisruptionBudget\" in version \"policy/v1beta1\""}

Reason: https://kubernetes.io/blog/2022/04/07/upcoming-changes-in-kubernetes-1-24/#looking-ahead (v1beta1 has been removed)

It looks like the problem is in this place: https://github.com/aws/karpenter-core/blob/23060db5957f34c547dd8d28c8653482fa3a396a/pkg/controllers/deprovisioning/pdblimits.go#L40

Actually it is policyv1 "k8s.io/api/policy/v1beta1"

I would suggest to fetch stable v1 policy first and if there is no such kind, fallback to v1beta1.

Thanks.

[ellistarn]

See: aws/karpenter-provider-aws#2354