- Kubeadm: fix the bug that configurable KubernetesVersion not respected during kubeadm join ([#111021](https://github.com/kubernetes/kubernetes/pull/111021), [@SataQiu](https://github.com/SataQiu)) [SIG Cluster Lifecycle]

## Dependencies

### Added
_Nothing has changed._

### Changed

- HA improvements:
  - `kubeadm join --experimental-control-plane` can now be used to join control plane instances to an existing cluster.
  - `kubeadm upgrade node experimental-control-plane` can now be used for upgrading secondary control plane instances created with `kubeadm join --experimental-control-plane`.
Multi-arch support (EXPERIMENTAL):

- Kubeadm: added `show-join-command` as a new separate phase at the end of `kubeadm init`. You can skip printing the join information by using `kubeadm init --skip-phases=show-join-command`. Executing only this phase on demand will throw an error because the phase needs dependencies such as bootstrap tokens to be pre-populated. ([#111512](https://git...

- kubeadm: increased the verbosity of API client dry-run actions during the subcommands "init", "join", "upgrade" and "reset". It also allowed dry-run on 'kubeadm join' even if there was no existing cluster by utilizing a faked, in-memory cluster-info ConfigMap. ([#126776](https://github.com/kubernetes/kubernetes/pull/126776), [@neolit123](https://github.com/neolit123))

s=t.nextElementSibling;for(;s;){if(s.matches(e))return[s];s=s.nextElementSibling}return[]},focusableChildren(t){const e=["a","button","input","textarea","select","details","[tabindex]",'[contenteditable="true"]'].map((t=>`${t}:not([tabindex^="-"])`)).join(",");return this.find(e,t).filter((t=>!d(t)&&h(t)))},getSelectorFromElement(t){const e=R(t);return e&&K.findOne(e)?e:null},getElementFromSelector(t){const e=R(t);return e?K.findOne(e):null},getMultipleElementsFromSelector(t){const e=R(t);return e?...

		trace:      c.trace.subroute(s),
	}
}

// Subroute adds a subroute to the subroute.
// The subroutes are combined with '/'.
func (c *Subroute) Subroute(s string) *Subroute {
	route := strings.Join([]string{c.route, s}, "/")
	return &Subroute{
		Connection: c.Connection,
		route:      route,
		subID:      makeSubHandlerID(0, route),
		trace:      c.trace.subroute(route),
	}
}

* Fixes a bug in kubeadm that caused init and join to hang indefinitely in specific conditions. ([#85156](https://github.com/kubernetes/kubernetes/pull/85156), [@chuckha](https://github.com/chuckha))

### **Cluster Lifecycle**

*   You must either specify the `--discovery-token-ca-cert-hash` flag to `kubeadm join`, or opt out of the CA pinning feature using `--discovery-token-unsafe-skip-ca-verification`.
*   The default `auto-detect` behavior of the kubelet's `--cloud-provider` flag is removed.

- Kubeadm: when using '--v=1' or higher log verbosity, print information of the CA certificate used for discovery  when using 'kubeadm join'. ([#137102](https://github.com/kubernetes/kubernetes/pull/137102), [@sivchari](https://github.com/sivchari)) [SIG Cluster Lifecycle]
- Kubectl explain: when a schema or field includes an externalDocs section, it is now displayed as:
  

chValue","val","toLowerCase","close","searchResults","filter","name","includes","endResults","slice","result","_renderItem","encodeURI","path","open","itemObject","navLink","navTreeview","end","_trimText","push","newPath","concat","trim","_this4","join","decodeURI","regExp","RegExp","str","groupItemElement","decodeURIComponent","searchTitleElement","searchPathElement","keyCode","last","focus","$focused","prev","resetOnClose","NavbarSearch","POSITION_TOP_RIGHT","POSITION_TOP_LEFT","POSITION_BOTTO...