- When updating a CRD, per-expression cost limit check are now skipped for `x-kubernetes-validations` rules of versions that are not mutated. ([#121460](https://github.com/kubernetes/kubernetes/pull/121460), [@jiahuif](https://github.com/jiahuif))

New alpha features include:
* Online volume resizing will increase the filesystem size of a resized volume without requiring a Pod restart.
* AWS EBS and GCE PD volumes support increased limits on the maximum number of attached volumes per node.
* Subpath volume directories can be created using DownwardAPI environment variables.

### SIG Windows

This release supports more of Kubernetes API for pods and containers on Windows, including:

  - `kubectl` outputs warnings to stderr, and accepts a `--warnings-as-errors` option to treat warnings as fatal errors
  - `k8s.io/client-go` outputs warnings to stderr by default; override this per-client by setting `config.WarningHandler`, or per-process with `rest.SetDefaultWarningHandler()`

You can read more in the official blog post [Kubernetes Release Cadence Change: Here’s What You Need To Know](https://blog.k8s.io/2021/07/20/new-kubernetes-release-cadence/).

	for i := 1; i < len(s); i++ {
		if !reflect.DeepEqual(s[i], s[0]) {
			return errSRIAMConfigMismatch(peers[0].Name, peers[i].Name, s[0], s[i])
		}
	}

	return nil
}

// Netperf for site-replication net perf
func (c *SiteReplicationSys) Netperf(ctx context.Context, duration time.Duration) (results madmin.SiteNetPerfResult, err error) {
	infos, err := globalSiteReplicationSys.GetClusterInfo(ctx)
	if err != nil {

- Improved `kubectl` display of invalid request errors returned by the API server. ([#112150](https://gi...

    /**
     * Get the value for the key 'suggest.update.doc.per.request'. <br>
     * The value is, e.g. 2 <br>
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getSuggestUpdateDocPerRequest();

    /**
     * Get the value for the key 'suggest.update.doc.per.request' as {@link Integer}. <br>
     * The value is, e.g. 2 <br>

  - Clone `kubernetes/kubernetes` in `update-vendor.sh` shallowly, instead of fetching all revisions
  - Speed up binpacking by reducing the number of PreFilter calls (call once per pod instead of #pods*#nodes times)
  - Speed up finding unneeded nodes by 5x+ in very large clusters by reducing the number of PreFilter calls
  - Expose `--max-nodes-total` as a metric

<code>len(x)</code> is <a href="#Length_and_capacity">constant</a>,
the range expression is not evaluated.
</p>

<p>
Function calls on the left are evaluated once per iteration.
For each iteration, iteration values are produced as follows
if the respective iteration variables are present:
</p>

<pre class="grammar">

 
## Changes by Kind

### Deprecation

- Reverted the `DisableNodeKubeProxyVersion` feature gate to default-off to give a full year from deprecation announcement in 1.29 to clearing the field by default, per the [Kubernetes deprecation policy](https://kubernetes.io/docs/reference/using-api/deprecation-policy/). ([#126720](https://github.com/kubernetes/kubernetes/pull/126720), [@liggitt](https://github.com/liggitt)) [SIG Architecture and Node]