* Liveness and readiness probes now support more configuration parameters:
periodSeconds, successThreshold, failureThreshold
  * The new ReplicaSet API (Beta) in the Extensions API group is similar to

- Kube-apiserver: Each unique set of etcd server overrides specified with `--etcd-servers-overrides` surfaced health checks named `etcd-override-<index>` and `etcd-override-readiness-<index>`. These checks were still excluded by the `?exclude=etcd` and `?exclude=etcd-readiness` directives. ([#129438](https://github.com/kubernetes/kubernetes/pull/129438), [@pacoxu](https://github.com/pacoxu)) [SIG API Machinery and Testing]

- [Conformance tests](https://github.com/kubernetes/kubernetes/pull/108592) added support for Windows
- New repository created for [Windows Operational Readiness](https://github.com/kubernetes-sigs/windows-operational-readiness)

### Moved container registry service from k8s.gcr.io to registry.k8s.io

specified) is `1s` which may be too small for some exec probes. Ensure that pods relying on this behavior are updated to correctly handle probe timeouts. See [configure probe](https://docs.k8s.io/tasks/configure-pod-container/configure-liveness-readiness-startup-probes/#configure-probes) section of the documentation for more details.

  - This change in behavior may be unexpected for some clusters and can be disabled by turning off the `ExecProbeTimeout` feature gate. This gate will be...

* Skip safe to detach check if node API object no longer exists ([#30737](https://github.com/kubernetes/kubernetes/pull/30737), [@saad-ali](https://github.com/saad-ali))
* Nodecontroller doesn't flip readiness on pods if kubeletVersion < 1.2.0 ([#30828](https://github.com/kubernetes/kubernetes/pull/30828), [@bprashanth](https://github.com/bprashanth))

- Removed `/livez` livezchecks for KMS v1 and v2 to ensure KMS health does not cause `kube-apiserver` restart. KMS health checks are still in place as a healthz and readiness checks. ([#120583](https://github.com/kubernetes/kubernetes/pull/120583), [@ritazh](https://github.com/ritazh))

## Changelog since v1.16.0

### Other notable changes

* Limit the body length of exec readiness/liveness probes. remote CRIs and Docker shim read a max of 16MB output of which the exec probe itself inspects 10kb. ([#82514](https://github.com/kubernetes/kubernetes/pull/82514), [@dims](https://github.com/dims))

- Pods will now post their readiness during termination. ([#110417](https://github.com/kubernetes/kubernetes/pull/110417), [@aojea](https://github.com/aojea)) [SIG Network, Node and Testing]

### EndpointSlices are now enabled by default

EndpointSlices are an exciting new API that provides a scalable and extensible alternative to the Endpoints API. EndpointSlices track IP addresses, ports, readiness, and topology information for Pods backing a Service.

- Added readiness gates in extended output for pods ([#70775](https://github.com/kubernetes/kubernetes/pull/70775), [@freehan](https://github.com/freehan))