client.networkInterceptors().add(loggingInterceptor);
    ```

    **Warning:** Avoid `Level.HEADERS` and `Level.BODY` in production because
    they could leak passwords and other authentication credentials to insecure
    logs.

 *  **WebSocket API now uses `RequestBody` and `ResponseBody` for messages.**
    This is a backwards-incompatible API change.

 *  **The DNS service is now pluggable.** In some situations this may be useful

* federation: Updating KubeDNS to try finding a local service first for federation query ([#27708](https://github.com/kubernetes/kubernetes/pull/27708), [@nikhiljindal](https://github.com/nikhiljindal))
* Support journal logs in fluentd-gcp on GCI ([#27981](https://github.com/kubernetes/kubernetes/pull/27981), [@a-robinson](https://github.com/a-robinson))

* Add Simplified Chinese translation for kubectl ([#45573](https://github.com/kubernetes/kubernetes/pull/45573), [@shiywang](https://github.com/shiywang))

### **kubectl (CLI)**
* Features

  * `kubectl logs` supports specifying a container name when using label selectors ([#44282](https://github.com/kubernetes/kubernetes/pull/44282), [@derekwaynecarr](https://github.com/derekwaynecarr))

* Upgrade Stackdriver Logging Agent addon image to 0.6-1.6.0-1 to use Fluentd v1.2. This provides nanoseconds timestamp granularity for logs. ([#70954](https://github.com/kubernetes/kubernetes/pull/70954), [@qingling128](https://github.com/qingling128))

### Runtime log sanitation

Logs can now be configured to use runtime protection from leaking sensitive data. [Details for this experimental feature is available in documentation](https://docs.k8s.io/concepts/cluster-administration/system-logs/#log-sanitization).

### Pod resource metrics

	Event     string
	APIName   string
	Status    string
	Bucket    string
	Object    string
	VersionID string
	Error     string
	Tags      map[string]string
}

// sends audit logs for internal subsystem activity
func auditLogInternal(ctx context.Context, opts AuditLogOptions) {
	if len(logger.AuditTargets()) == 0 {
		return
	}

	entry := audit.NewEntry(globalDeploymentID())

* Advanced audit policy now supports matching subresources and resource names, but the top level resource no longer matches the subresouce. For example "pods" no longer matches requests to the logs subresource of pods. Use "pods/logs" to match subresources. ([#48836](https://github.com/kubernetes/kubernetes/pull/48836), [@ericchiang](https://github.com/ericchiang))

									<location>${project.basedir}</location>
									<includes>
										<include>plugin.xml</include>
									</includes>
								</source>
							</sources>
						</mapping>
						<!-- logs (empty) -->
						<mapping>
							<directory>${packaging.fess.log.dir}</directory>
						</mapping>
						<!-- temp (empty) -->
						<mapping>
							<directory>${packaging.fess.temp.dir}</directory>

		Value:  10 * humanize.MiByte,
		EnvVar: "MINIO_LOG_SIZE",
		Hidden: true,
	},
	cli.BoolFlag{
		Name:   "log-compress",
		Usage:  "specify if we want the rotated logs to be gzip compressed or not",
		EnvVar: "MINIO_LOG_COMPRESS",
		Hidden: true,
	},
	cli.StringFlag{
		Name:   "log-prefix",
		Usage:  "specify the log prefix name for the server log",

- kubeadm: Use generic terminology in logs instead of direct mentions of YAML/JSON  ([#130345](https://github.com/kubernetes/kubernetes/pull/130345), [@HirazawaUi](https://github.com/HirazawaUi))