production clusters efficiently. kubeadm has promoted high availability (HA) capability to beta, allowing users to use the familiar `kubeadm init` and `kubeadm join` commands to [configure and deploy an HA control plane](https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/high-availability/). An entire new test suite has been created specifically for ensuring these features will stay stable over time.

Certificate management has become more robust in 1.15, with kubeadm...

`kubadm certs renew` will renew the certificate in `super-admin.conf` to one year if the file exists; if it does not exist a "MISSING" note will be printed. `kubeadm upgrade apply` for this release will migrate this particular node to the two file setup. Subsequent kubeadm releases will continue to optionally renew the certificate in `super-admin.conf` if the file exists on disk and if renew on upgrade is not disabled. `kubeadm join --control-plane` will now generate only an `admin.conf` file that...

- kubeadm: improved the `kubeadm reset` message for manual cleanups and referenced https://k8s.io/docs/reference/setup-tools/kubeadm/kubeadm-reset/. ([#129644](https://github.com/kubernetes/kubernetes/pull/129644), [@neolit123](https://github.com/neolit123)) [SIG Cluster Lifecycle]

### Bug or Regression

After its deprecation in v1.20, the dockershim component has been removed from the kubelet.
From v1.24 onwards, you will need to either use one of the other [supported runtimes](https://kubernetes.io/docs/setup/production-environment/container-runtimes/) (such as containerd or CRI-O)
or use cri-dockerd if you are relying on Docker Engine as your container runtime.

- kubeadm: fix "certificate-authority" files not being pre-loaded when using file discovery ([#80966](https://github.com/kubernetes/kubernetes/pull/80966), [@neolit123](https://github.com/neolit123))
- Add instruction to setup "Application Default Credentials" to run GCE Windows e2e tests locally. ([#81337](https://github.com/kubernetes/kubernetes/pull/81337), [@YangLu1031](https://github.com/YangLu1031))

- Added Extra.DisableAvailableConditionController for Generic Control Plane setup. ([#125650](https://github.com/kubernetes/kubernetes/pull/125650), [@mjudeikis](https://github.com/mjudeikis)) [SIG API Machinery]

- Updated pause image to version 3.5, which now runs per default as pseudo user and group `65535:65535`. This does not have any effect on remote container runtimes like CRI-O and containerd, which setup the pod sandbox user and group on their own. ([#100292](https://github.com/kubernetes/kubernetes/pull/100292), [@saschagrunert](https://github.com/saschagrunert))

- Fixed race condition in GCE between containerized mounter setup in the kubelet. ([#112195](https://github.com/kubernetes/kubernetes/pull/112195), [@mattcary](https://github.com/mattcary))

- Kubelet: The `--azure-container-registry-config` flag has been deprecated and will be removed in a future release, please use `--image-credential-provider-config` and `--image-credential-provider-bin-dir` to setup acr credential provider instead. ([#118596](https://github.com/kubernetes/kubernetes/pull/118596), [@SataQiu](https://github.com/SataQiu)) [SIG Node]

- Remove ready file and its directory (which is created during volume SetUp) during emptyDir volume TearDown. ([#95770](https://github.com/kubernetes/kubernetes/pull/95770), [@jingxu97](https://github.com/jingxu97)) [SIG Storage]

### Other (Cleanup or Flake)