* Fixed the webhook admission plugin so that webhook author could use the DNS name of the service as the CommonName when generating the server cert for the webhook.
    * Action required:

    * Fixed the webhook admission plugin so that webhook author could use the DNS name of the service as the CommonName when generating the server cert for the webhook.
    * Action required:

* genericapiserver: cut off certificates api dependency ([#39947](https://github.com/kubernetes/kubernetes/pull/39947), [@sttts](https://github.com/sttts))
* genericapiserver: extract CA cert from server cert and SNI cert chains ([#39022](https://github.com/kubernetes/kubernetes/pull/39022), [@sttts](https://github.com/sttts))

- The CSR signing cert/key pairs will be reloaded from disk like the kube-apiserver cert/key pairs ([#86816](https://github.com/kubernetes/kubernetes/pull/86816), [@deads2k](https://github.com/deads2k)) [SIG API Machinery, Apps and Auth]

    <glob pattern="*.webarchive"/>
  </mime-type>

  <mime-type type="application/x-x509-cert">
    <alias type="application/x-x509-ca-cert"/>
    <alias type="application/x-x509-user-cert"/>
    <glob pattern="*.crt"/>
  </mime-type>
  <mime-type type="application/x-x509-cert;format=pem">
    <sub-class-of type="application/x-x509-cert"/>
    <glob pattern="*.pem"/>
    <magic priority="50">

* kubeadm: add back `--cert-dir` option for `kubeadm init phase certs sa` ([#73239](https://github.com/kubernetes/kubernetes/pull/73239), [@mattkelly](https://github.com/mattkelly))

tes/pull/57902), [@kawych](https://github.com/kawych))

* On cluster provision or upgrade, kubeadm now generates certs and secures all connections to the etcd static-pod with mTLS. This includes the etcd serving cert, the etcd peer cert, and the apiserver etcd client cert. Flags and hostMounts are added to the etcd and apiserver static-pods to load these certs. For connections to etcd, https is now used in favor of http. ([#57415](https://github.com/kubernetes/kubernetes/pull/57415),...

credentials in the certificates directory as `kubelet-client.key` and `kubelet-client.crt`.  Subsequent certificates created by cert rotation were created in a combined PEM file that was atomically rotated as `kubelet-client-DATE.pem` in that directory, which meant clients relying on the `node.kubeconfig` generated by bootstrapping would never use a rotated cert.  The initial bootstrap certificate is now generated into the cert directory as a PEM file and symlinked to `kubelet-client-current.pem` so that...

- Kubeadm: graduate the "kubeadm alpha certs" command to a parent command "kubeadm certs". The command "kubeadm alpha certs" is deprecated and will be removed in a future release. Please migrate. ([#94938](https://github.com/kubernetes/kubernetes/pull/94938), [@yagonobre](https://github.com/yagonobre)) [SIG Cluster Lifecycle]

  - The flag `--experimental-control-plane` is now deprecated in favor of  `--control-plane`. The flag `--experimental-upload-certs` is now deprecated in favor of `--upload-certs` ([#78452](https://github.com/kubernetes/kubernetes/pull/78452), [@fabriziopandini](https://github.com/fabriziopandini))