- Kubeadm: the "kubeadm alpha certs" command is removed now, please use "kubeadm certs" instead. ([#97706](https://github.com/kubernetes/kubernetes/pull/97706), [@knight42](https://github.com/knight42)) [SIG Cluster Lifecycle]

  Also includes percentile groupings. The directory for the default 404 handler includes instructions on how to enable prometheus for monitoring and setting alerts.
  ([#79106](https://github.com/kubernetes/kubernetes/pull/79106), [@vbannai](https://github.com/vbannai))

### Instrumentation

  - 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))

- It is now possible to upload certificates required to join a new control-plane to kubeadm-certs secret using the flag `--experimental-upload-certs` on `init` or upload-certs phase. ([#73907](https://github.com/kubernetes/kubernetes/pull/73907), [@yagonobre](https://github.com/yagonobre))

  certificate. ([#120521](https://github.com/kubernetes/kubernetes/pull/120521), [@SataQiu](https://github.com/SataQiu))
- `kubeadm`: removed leftover disclaimer that could be seen in the `kubeadm init phase certs` command help screen, since the "certs" phase of "init" is no longer alpha. ([#121172](https://github.com/kubernetes/kubernetes/pull/121172), [@SataQiu](https://github.com/SataQiu))

- Added option to create CSRs instead of certificates for kubeadm init phase certs and kubeadm alpha certs renew ([#70809](https://github.com/kubernetes/kubernetes/pull/70809), [@liztio](https://github.com/liztio))

- Update Azure load balancer to prevent orphaned public IP addresses ([#82890](https://github.com/kubernetes/kubernetes/pull/82890), [@chewong](https://github.com/chewong))
### Cluster Lifecycle
- Kubeadm alpha certs command now skip missing files ([#85092](https://github.com/kubernetes/kubernetes/pull/85092), [@fabriziopandini](https://github.com/fabriziopandini))

  in kube-apisever and kube-controller-manager pods. Instead, it shifted to supporting the
  mounting of /etc/pki/ca-trust and /etc/pki/tls/certs. The locations /etc/ca-certificate,
  /usr/share/ca-certificates, /usr/local/share/ca-certificates, and /etc/ssl/certs continued
  to be supported. ([#124361](https://github.com/kubernetes/kubernetes/pull/124361), [@neolit123](https://github.com/neolit123))

## Changelog since v1.7.0

### Other notable changes

* Added new flag to `kubeadm init`: --node-name, that lets you specify the name of the Node object that will be created ([#48594](https://github.com/kubernetes/kubernetes/pull/48594), [@GheRivero](https://github.com/GheRivero))

- 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]