## Changelog since v1.26.0

## Known Issues

### The PreEnqueue extension point doesn't work for Pods going to activeQ through backoffQ

In v1.26.0, we've found the bug that the PreEnqueue extension point doesn't work for Pods going to activeQ through backoffQ. 
It doesn't affect any of the vanilla Kubernetes behavior, but, may break custom PreEnqueue plugins.

- When the cluster size is small and the scheduler doesn't get unscheduled Pods frequently, the scheduler doesn't try to reschedule Pods in some cases. ([#119784](https://github.com/kubernetes/kubernetes/pull/119784), [@sanposhiho](https://github.com/sanposhiho)) [SIG Scheduling and Testing]

## Dependencies

### Bug or Regression

- EndpointSlice Mirroring controller now cleans up managed EndpointSlices when a Service selector is added (#106135, @robscott) [SIG Apps, Network and Testing]
- Fix a bug that `--disabled-metrics` doesn't function well. (#106391, @Huang-Wei) [SIG API Machinery, Cluster Lifecycle and Instrumentation]
- Fix a panic in kubectl when creating secrets with an improper output type (#106354, @lauchokyip) [SIG CLI]

    * Action required:
    * Anyone who generated server cert for admission webhooks need to regenerate the cert. Previously, when generating server cert for the admission webhook, the CN value doesn't matter. Now you must set it to the DNS name of the webhook service, i.e., `<service.Name>.<service.Namespace>.svc`.

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   6. Trademarks. This License does not grant permission to use the trade
      names, trademarks, service marks, or product names of the Licensor,
      except as required for reasonable and customary use in describing the

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      with Licensor regarding such Contributions.

   6. Trademarks. This License does not grant permission to use the trade
      names, trademarks, service marks, or product names of the Licensor,
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- Changes behaviour of kube-proxy start; does not attempt to set specific `sysctl` values (which does not work in recent Kernel versions anymore in non-init namespaces), when the current sysctl values are already set higher. ([#103174](https://github.com/kubernetes/kubernetes/pull/103174), [@Napsty](https://github.com/Napsty))...

- Fix `EndpointSlice` describe panic when an Endpoint doesn't have zone. ([#101025](https://github.com/kubernetes/kubernetes/pull/101025), [@tnqn](https://github.com/tnqn))
- Fix `kubectl set env` or `resources` not working for initcontainers. ([#101669](https://github.com/kubernetes/kubernetes/pull/101669), [@carlory](https://github.com/carlory))

  Ginkgo V2 doesn't accept go test's `-parallel` flags to parallelize Ginkgo specs, please switch to use `ginkgo -p` or `ginkgo -procs=N` instead. ([#109111](https://github.com/kubernetes/kubernetes/pull/109111), [@chendave](https://github.com/chendave)) [SIG API Machinery,...