- Fixed the reporting of elapsed times during evaluation of `ValidatingAdmissionPolicy` decisions and annotations. The apiserver_validating_admission_policy_check_duration metrics will now show elapsed times and no longer be zero. ([#128463](https://github.com/kubernetes/kubernetes/pull/128463), [@knrc](https://github.com/knrc))

- Fix /readyz to return error immediately after a shutdown is initiated, before the --shutdown-delay-duration has elapsed. ([#88911](https://github.com/kubernetes/kubernetes/pull/88911), [@tkashem](https://github.com/tkashem)) [SIG API Machinery]

- Correctly handle resetting cpuacct in a live container ([#94040](https://github.com/kubernetes/kubernetes/pull/94040), [@andyzhangx](https://github.com/andyzhangx)) [SIG Node and Windows]
- Fix uint64 overflow when elapsed ([#94038](https://github.com/kubernetes/kubernetes/pull/94038), [@andyzhangx](https://github.com/andyzhangx)) [SIG Node and Windows]

- Fix /readyz to return error immediately after a shutdown is initiated, before the --shutdown-delay-duration has elapsed. ([#88953](https://github.com/kubernetes/kubernetes/pull/88953), [@tkashem](https://github.com/tkashem)) [SIG API Machinery]

* Kubelets using TLS bootstrapping (`--bootstrap-kubeconfig`) or certificate rotation (`--rotate-certificates`) store certificates in the directory specified by `--cert-dir`. The default location (`/var/run/kubernetes`) is automatically erased on reboot on some platforms, which can prevent the kubelet from authenticating to the API server after a reboot. Specifying a non-transient location, such as `--cert-dir=/var/lib/kubelet/pki`, is recommended.