* Implement graceful shutdown of the kube-apiserver by waiting for open connections to finish before exiting. Moreover, the audit backend will stop dropping events on shutdown. ([#53695](https://github.com/kubernetes/kubernetes/pull/53695), [@hzxuzhonghu](https://github.com/hzxuzhonghu))

- Changed handling of `CustomResourceDefinitions` with unrecognized formats. Writing a schema with an unrecognized format now triggered a warning (the write was still accepted). ([#133136](https://github.com/kubernetes/kubernetes/pull/133136), [@yongruilin](https://github.com/yongruilin))

# v1.7.7

* Increase Azure default maximumLoadBalancerRuleCount to 250. ([#72621](https://github.com/kubernetes/kubernetes/pull/72621), [@feiskyer](https://github.com/feiskyer))
* Fixes a NPD bug on GCI, so that it disables glog writing to files for log-counter ([#76211](https://github.com/kubernetes/kubernetes/pull/76211), [@wangzhen127](https://github.com/wangzhen127))

"kube-system/kubelet-config-1.22", while the new format does not - "kube-system/kubelet-config". A similar formatting change is done for the related RBAC rules. The old format is now DEPRECATED and will be removed after the feature graduates to GA. When writing the ConfigMap kubeadm (init, upgrade apply) will respect the value of UnversionedKubeletConfigMap, while when reading it (join, reset, upgrade), it would attempt to use new format first and fallback to the legacy format if needed. ([#105741](http...

* [metrics-server addon] Restore connecting to nodes via IP addresses ([#76819](https://github.com/kubernetes/kubernetes/pull/76819), [@serathius](https://github.com/serathius))
* Fixes a NPD bug on GCI, so that it disables glog writing to files for log-counter ([#76211](https://github.com/kubernetes/kubernetes/pull/76211), [@wangzhen127](https://github.com/wangzhen127))

* StatefulSet will now fill the `hostname` and `subdomain` fields if they're empty on existing Pods it owns....

- Kubeadm: Ensured waiting for `apiserver` uses a local client that doesn't reach to the control plane endpoint and instead reaches directly to the local API server endpoint. ([#134265](https://github.com/kubernetes/kubernetes/pull/134265), [@neolit123](https://github.com/neolit123))

#### CLI Changes

- [alpha] `kubectl` plugins: `kubectl` now allows binary extensibility. You can extend the default set of `kubectl` commands by writing plugins
  that provide new subcommands. Refer to the documentation for more information.

- `kubectl rollout` and `rollback` now support StatefulSet.

* Set an upper bound (5 minutes) on how long the Kubelet will wait before exiting when the client cert from disk is missing or invalid. This prevents the Kubelet from waiting forever without attempting to bootstrap a new client credentials. ([#59316](https://github.com/kubernetes/kubernetes/pull/59316), [@smarterclayton](https://github.com/smarterclayton))