- 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:

// This hash must be used in-memory and not externalized to the process because it has no cross-release stability guarantees.
func computeEncryptionConfigHash(data []byte) string {
	return fmt.Sprintf("k8s:enc:unstable:1:%x", sha256.Sum256(data))
}

var _ storagevalue.ResourceTransformers = &DynamicTransformers{}

// the DaemonSet and StatefulSet controllers for update and rollback, this object is beta. However,
// it may be subject to name and representation changes in future releases, and clients should not
// depend on its stability. It is primarily for internal use by controllers.
message ControllerRevision {
  // Standard object's metadata.
  // More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata

// the DaemonSet and StatefulSet controllers for update and rollback, this object is beta. However,
// it may be subject to name and representation changes in future releases, and clients should not
// depend on its stability. It is primarily for internal use by controllers.
message ControllerRevision {
  // Standard object's metadata.
  // More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata

  // May only be set when `deprecated` is true.
  // The default warning indicates this version is deprecated and recommends use
  // of the newest served version of equal or greater stability, if one exists.
  // +optional
  optional string deprecationWarning = 8;

  // schema describes the schema used for validation, pruning, and defaulting of this version of the custom resource.
  // +optional

(kernel or iptables versions are insufficient), the kube-proxy will fall-back
to userspace mode. Kube-proxy is much more performant and less
resource-intensive in ‘iptables’ mode.
  * Node stability can be improved by reserving [resources](https://github.com/kubernetes/kubernetes/blob/release-1.2/docs/proposals/node-allocatable.md) for the base operating system using --system-reserved and --kube-reserved Kubelet flags

- Kube-apiserver: Fixed a `1.27`+ regression in watch stability by serving watch requests without a `resourceVersion` from the watch cache by default, as in <`1.27` (disabling the change in PR 115096 by default). This mitigates the impact of an etcd watch bug (https://github.com/etcd-io/etcd/pull/17555). If the 1.27 change in PR 115096 to serve these requests from underlying storage is still desired despite the impact on watch stability, it can be re-enabled with a `WatchFromStorageWithoutResourceVersion`...

SIG Scalability has mostly focused on stability and deflaking our tests, investing into framework for writing scalability tests (ClusterLoader v2) with a goal to migrate all tests to it by the end of 2018 and on the work towards extending definition of Kubernetes scalability by providing more/better user-friendly SLIs/SLOs.

### SIG Scheduling

* Schritte vor dem Start

## Arbeitsspeicher

Wenn Sie **einen einzelnen Prozess pro Container** ausführen, wird von jedem dieser Container (mehr als einer, wenn sie repliziert werden) eine mehr oder weniger klar definierte, stabile und begrenzte Menge an Arbeitsspeicher verbraucht.

  // May only be set when `deprecated` is true.
  // The default warning indicates this version is deprecated and recommends use
  // of the newest served version of equal or greater stability, if one exists.
  // +optional
  optional string deprecationWarning = 8;

  // schema describes the schema used for validation and pruning of this version of the custom resource.