- kubeadm: Added better handling of errors during unmount when calling `kubeadm reset`. When failing to unmount directories under `/var/run/kubelet`, kubeadm will now throw an error instead of showing a warning and continuing to clean up said directory. In such situations, it is better for you to inspect the problem and resolve it manually. Then, you can call `kubeadm reset` again to complete the cleanup.

	} else if len(fs.Resource) == 0 {
		allErrs = append(allErrs, field.Required(fldPath.Child("resource"), ""))
	} else if !expressions.Has(fs.Resource) {
		// check if the prefix is present
		foundPrefix := false
		if prefixes != nil {
			for _, prefix := range sets.List(*prefixes) {
				if strings.HasPrefix(fs.Resource, prefix) {
					foundPrefix = true
				}
			}
		}

### Kubernetes API Reference Documentation

- During device plugin allocation, resources requested by the pod can only be allocated if the device plugin has registered itself to kubelet AND healthy devices are present on the node to be allocated. If these conditions are not sattsfied, the pod would fail with `UnexpectedAdmissionError` error. ([#116376](https://github.com/kubernetes/kubernetes/pull/116376), [@swatisehgal](https://github.com/swatisehgal)) [SIG Node...

    - [**Security**](#security)
      - [Admission Control](#admission-control)
      - [TLS Bootstrapping](#tls-bootstrapping)
      - [Audit Logging](#audit-logging)
      - [Encryption at Rest](#encryption-at-rest)
      - [Node Authorization](#node-authorization)
    - [**Application Autoscaling**](#application-autoscaling)
      - [Horizontal Pod Autoscaler](#horizontal-pod-autoscaler)

* Properly autopopulate OpenAPI version field without needing other OpenAPI fields present in generic API server code. ([#66411](https://github.com/kubernetes/kubernetes/pull/66411), [@DirectXMan12](https://github.com/DirectXMan12))

- Kubeadm: prevent potential hanging of commands such as "kubeadm reset" if the apiserver endpoint is not reachable. ([#84648](https://github.com/kubernetes/kubernetes/pull/84648), [@neolit123](https://github.com/neolit123))

default `admin.conf` was bound to `system:masters` Group, which was undesired. Executing `kubeadm init phase kubeconfig all` or just `kubeadm init` will now generate the new `super-admin.conf` file. The cluster admin can then decide to keep the file present on a node host or move it to a safe location. `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...

* apiserver: fixes handling and logging of panics in REST handlers to prevent crashes ([#71076](https://github.com/kubernetes/kubernetes/pull/71076), [@liggitt](https://github.com/liggitt))

- Kubeadm: remove the deprecated / NO-OP phase `update-cluster-status` in `kubeadm reset` ([#105888](https://github.com/kubernetes/kubernetes/pull/105888), [@neolit123...