* You *MUST* set `--anonymous-auth=false` flag on your kube-apiserver unless you are a developer testing this feature and understand it.
  If you do not, you risk allowing unauthorized users to access your apiserver.
  * You *MUST* set `--anonymous-auth=false` flag on your federation apiserver unless you are a developer testing this feature and understand it.
    If you do not, you risk allowing unauthorized users to access your federation apiserver.

  // ManagedFields maps workflow-id and version to the set of fields
  // that are managed by that workflow. This is mostly for internal
  // housekeeping, and users typically shouldn't need to set or
  // understand this field. A workflow can be the user's name, a
  // controller's name, or the name of a specific apply path like
  // "ci-cd". The set of fields is always in the version that the
  // workflow used when modifying the object.

	// to ignore TERM.)
	stderr := p.gccErrors(b.Bytes(), "-fdiagnostics-color=never")
	if strings.Contains(stderr, "unrecognized command line option") {
		// We're using an old version of GCC that doesn't understand
		// -fdiagnostics-color. Those versions can't print color anyway,
		// so just rerun without that option.
		stderr = p.gccErrors(b.Bytes())
	}
	if stderr == "" {

- Added metrics `authentication_attempts` that can be used to understand the attempts of authentication. ([#81509](https://github.com/kubernetes/kubernetes/pull/81509), [@RainbowMango](https://github.com/RainbowMango))

- Kube-scheduler removed the following plugins: 

- Kube-apiserver: Added metrics `authentication_latency_seconds` that can be used to understand the latency of authentication. ([#82409](https://github.com/kubernetes/kubernetes/pull/82409), [@RainbowMango](https://github.com/RainbowMango))

- The `--bind-address` parameter in kube-proxy is misleading, no port is opened with this address. Instead it is translated...

## Major Themes

- **Simplified User Experience**
  - Easier to get a cluster up and running (eg: `kubeadm`, intra-cluster bootstrapping)
  - Easier to understand a cluster (eg: API audit logs, server-based API defaults)
- **Stateful Application Support**
  - Enhanced persistence capabilities (eg: `StorageClasses`, new volume plugins)

### Documentation

- Added a new internal metric `kubelet_first_network_pod_start_sli_duration_second` in the kubelet that allowed developers to understand the source of the latency problems on node startups.
   ([#121720](https://github.com/kubernetes/kubernetes/pull/121720), [@aojea](https://github.com/aojea))

deployments`) and be called when any other version of that resource is modified (for example `extensions/v1beta1 deployments`). This allows new versions of a resource to be handled by admission webhooks without needing to update every webhook to understand the new version. See the API documentation for the `matchPolicy: Equivalent` option in MutatingWebhookConfiguration and ValidatingWebhookConfiguration types. ([#78135](https://github.com/kubernetes/kubernetes/pull/78135), [@liggitt](https://github.com/liggitt))...