Kubernetes 1.25+ is not compatible with Linkerd 2.11

[drehelis]

I couldn't find release cycle for Linkerd so I'd assume the attached dropdown menu is the currently maintained and supported versions but I might be wrong here.

In 1.25, batch/v1beta1 CronJob API is no longer available. This puts linkerd-proxy-injector in a CrashLoopBackOff with the error

I0620 08:53:05.809070       1 request.go:1123] Response Body: {"kind":"Status","apiVersion":"v1","metadata":{},"status":"Failure","message":"the server could not find the requested resource","reason":"NotFound","details":{},"code":404}
E0620 08:53:05.809174       1 reflector.go:138] pkg/mod/k8s.io/[email protected]/tools/cache/reflector.go:167: Failed to watch *v1beta1.CronJob: failed to list *v1beta1.CronJob: the server could not find the requested resource

This should be noted somewhere, with a big noticeable text/color ;-)

WDYT?

[alpeb]

As stated in that doc:

Stable versions earlier than the previous major version will not receive bugfixes or enhancements.

which means 2.11 is no longer supported.

But thanks for the report, this helps in #11068 figuring out the exact reason of the incompatibility.