- Kubeadm: deprecate self-hosting support. The experimental command "kubeadm alpha self-hosting" is now deprecated and will be removed in a future release. ([#95125](https://github.com/kubernetes/kubernetes/pull/95125), [@neolit123](https://github.com/neolit123)) [SIG...

- Kube-proxy: deprecate `--healthz-port` and `--metrics-port` flag, please use `--healthz-bind-address` and `--metrics-bind-address` instead ([#88512](https://github.com/kubernetes/kubernetes/pull/88512), [@SataQiu](https://github.com/SataQiu)) [SIG Network]

- GCERegionalPersistentDisk feature is GA now! ([#70716](https://github.com/kubernetes/kubernetes/pull/70716), [@jingxu97](https://github.com/jingxu97))
- Added secure port 10259 to the kube-scheduler (enabled by default) and deprecate old insecure port 10251. Without further flags self-signed certs are created on startup in memory. ([#69663](https://github.com/kubernetes/kubernetes/pull/69663), [@sttts](https://github.com/sttts))

## Release Notes From SIGs

- Deprecate `--record` flag in `kubectl`. The `--record` flag is being replaced with the [mechanism](https://github.com/kubernetes/enhancements/tree/master/keps/sig-cli/859-kubectl-headers) which annotates HTTP requests with kubectl command details. ([#1028...

 - Remove alpha `CSIMigrationXXComplete` flag and add alpha `InTreePluginXXUnregister` flag. Deprecate `CSIMigrationvSphereComplete` flag and it will be removed in v1.22. ([#98243](https://github.com/kubernetes/kubernetes/pull/98243), [@Jiawei0227](https://github.com/Jiawei0227))

* retry oauth token fetch in gce cloudprovider ([#32021](https://github.com/kubernetes/kubernetes/pull/32021), [@mikedanese](https://github.com/mikedanese))
* Deprecate the old cbr0 and flannel networking modes ([#31197](https://github.com/kubernetes/kubernetes/pull/31197), [@freehan](https://github.com/freehan))

@include hover-focus() {\n      background-color: darken($color, 10%) !important;\n    }\n  }\n  @include deprecate(\"The `bg-variant` mixin\", \"v4.4.0\", \"v5\", $ignore-warning);\n}\n\n@mixin bg-gradient-variant($parent, $color, $ignore-warning: false) {\n  #{$parent} {\n    background: $color linear-gradient(180deg, mix($body-bg, $color, 15%), $color) repeat-x !important;\n  }\n  @include deprecate(\"The `bg-gradient-variant` mixin\", \"v4.5.0\", \"v5\", $ignore-warning);\n}\n","// stylelint-disable...

This release does *not* deprecate the v1 HorizontalPodAutoscaler API.

### Generic Ephemeral Volume feature graduates to GA

The generic ephemeral volume feature moved to GA in 1.23.

- Client-go: if resetting the body fails before a retry, an error is now surfaced to the user. ([#109050](https://github.com/kubernetes/kubernetes/pull/109050), [@MadhavJivrajani](https://github.com/MadhavJivrajani))
- Deprecate apiserver_dropped_requests_total metric. The same data can be read from apiserver_request_terminations_total metric. ([#109018](https://github.com/kubernetes/kubernetes/pull/109018), [@wojtek-t](https://github.com/wojtek-t))

* Add a new kubelet endpoint for serving first-class resource metrics ([#73946](https://github.com/kubernetes/kubernetes/pull/73946), [@dashpole](https://github.com/dashpole))
* Deprecate AWS, Azure, GCE and Cinder specific volume limit predicates. ([#74544](https://github.com/kubernetes/kubernetes/pull/74544), [@gnufied](https://github.com/gnufied))