* 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))

- Kubeadm: added the "--cleanup-tmp-dir" flag for `kubeadm reset`. It will cleanup the contents of `/etc/kubernetes/tmp`....

- The Kubelet's --seccomp-profile-root option is now marked as deprecated. ([#91182](https://github.com/kubernetes/kubernetes/pull/91182), [@knabben](https://github.com/knabben)) [SIG Node]
- The Kubelet's `--bootstrap-checkpoint-path` option is now removed. ([#91577](https://github.com/kubernetes/kubernetes/pull/91577), [@knabben](https://github.com/knabben)) [SIG Apps and Node]

endpoint for the kubelet when creating a cluster with "kubeadm init" or when joining control plane nodes with "kubeadm join".  The "kubeadm join" workflow now includes two new experimental phases called "control-plane-join-etcd" and "kubelet-wait-bootstrap" which will be used when the feature gate is enabled. This phases will be marked as non-experimental when ControlPlaneKubeletLocalMode becomes GA. During "kubeadm upgrade" commands, if the feature gate is enabled, modify the "/etc/kubernetes/kubelet.conf...