- Change `pod_preemption_victims` metric from Gauge to Histogram. ([#83603](https://github.com/kubernetes/kubernetes/pull/83603), [@Tabrizian](https://github.com/Tabrizian))
- Following metrics from kubelet are now marked as with the ALPHA stability level:
  `kubelet_container_log_filesystem_used_bytes`

That information will be included in the generated OpenAPI and used by the documentation user interfaces and external tools.

/// note

Keep in mind that different tools might have different levels of OpenAPI support.

Some of them might not show all the extra information declared yet, although in most of the cases, the missing feature is already planned for development.

///

You can add a `title`:

* go to the parent package (the directory `app/`)...
* then go to the parent of that package (there's no parent package, `app` is the top level 😱)...
* and in there, find the module `dependencies` (the file at `app/dependencies.py`)...
* and from it, import the function `get_token_header`.

	// Check if backend is writable and supports O_DIRECT
	uuid := mustGetUUID()
	filePath := pathJoin(s.drivePath, minioMetaTmpDeletedBucket, ".writable-check-"+uuid+".tmp")

	// Create top level directories if they don't exist.
	// with mode 0o777 mkdir honors system umask.
	mkdirAll(pathutil.Dir(filePath), 0o777, s.drivePath) // don't need to fail here

			Optional:    true,
			Type:        "none|snappy|gzip|lz4|zstd",
		},
		config.HelpKV{
			Key:         target.KafkaCompressionLevel,
			Description: "specify compression level of the Kafka cluster",
			Optional:    true,
			Type:        "number",
		},
		config.HelpKV{
			Key:         target.KafkaBatchSize,
			Description: "batch size of the events; used only when queue_dir is set",

scalability testing in a continuous integration (CI) environment. The SIG
defined a concrete process for scalability testing, created
documentation for the current scalability thresholds, and defined a new set of
Service Level Indicators (SLIs) and Service Level Objectives (SLOs) for the system.
Here's the release [scalability validation report].

[SIG Scalability]: https://github.com/kubernetes/community/tree/master/sig-scalability

upgrades or maintenance.
     * Custom Metrics for Autoscaling (HorizontalPodAutoscaler API in the Autoscaling
API group): The Horizontal Pod Autoscaling feature now supports custom metrics
(Alpha), allowing you to specify application-level metrics and thresholds to
trigger scaling up and down the number of pods in your application.
  * <strong>New GUI</strong> (dashboard) allows you to get started quickly and enables the same

  - [alpha] Alpha level support for DaemonSets in federation. ([docs](http://kubernetes.io/docs/user-guide/federation/daemonsets/)) ([kubernetes/features#101](https://github.com/kubernetes/enhancements/issues/101))

			args: []string{"--filename", validKubernetesJSONFile},
			expectedRegexp: regexp.MustCompile(`^".*" is valid
$`),
			wantError: false,
		},
		{
			name:           "invalid top-level key",
			args:           []string{"--filename", unsupportedKeyFilename},
			expectedRegexp: regexp.MustCompile(`.*unknown field "unexpected_junk"`),
			wantError:      true,
		},
		{

  val directoryPath: Path
    get() = cache.directory

  @JvmName("-deprecated_directory")
  @Deprecated(
    message = "moved to val",
    replaceWith = ReplaceWith(expression = "directory"),
    level = DeprecationLevel.ERROR,
  )
  fun directory(): File = cache.directory.toFile()

  @Synchronized internal fun trackResponse(cacheStrategy: CacheStrategy) {
    requestCount++