- Resolves regression generating informers for packages whose names contain `.` characters ([#82410](https://github.com/kubernetes/kubernetes/pull/82410), [@nikhita](https://github.com/nikhita))
- Resolves issue with `/readyz` and `/livez` not including etcd and kms health checks ([#82713](https://github.com/kubernetes/kubernetes/pull/82713), [@logicalhan](https://github.com/logicalhan))

* The `rbac/v1alpha1`, `settings/v1alpha1`, and `scheduling/v1alpha1` APIs are disabled by default.

## Changelog since v1.18.18

## Changes by Kind

### API Change

- We have added a new Priority & Fairness rule that exempts all probes (/readyz, /healthz, /livez) to prevent 
  restarting of "healthy" kube-apiserver instance(s) by kubelet. ([#101114](https://github.com/kubernetes/kubernetes/pull/101114), [@tkashem](https://github.com/tkashem)) [SIG API Machinery]

### Bug or Regression

  kube-proxy is responsible for, rather than only counting the number of rules
  that it re-synced on the last sync. The new `sync_proxy_rules_iptables_last`
  metric now gives the latter number. ([#119140](https://github.com/kubernetes/kubernetes/pull/119140), [@danwinship](https://github.com/danwinship)) [SIG Network]

- The [Service Plan Defaults](https://svc-cat.io/docs/service-plan-defaults/) feature is in alpha and is under active development. This feature gives operators the ability to define defaults for when someone provisions a service.
- We now support [filtering which services are exposed by Service Catalog](https://svc-cat.io/docs/catalog-restrictions/).

# Files that should be ignored by tools which do not want to consider generated
# code.
#
# https://github.com/kubernetes/test-infra/blob/master/prow/plugins/size/size.go
#
# This file is a series of lines, each of the form:
#     <type> <name>
#
# Type can be:
#    path - an exact path to a single file
#    file-name - an exact leaf filename, regardless of path
#    path-prefix - a prefix match on the file path

  fix: consolidate logs for instance not found error (#105365, @nilo19) [SIG Cloud Provider]
- Allow CSI drivers to just run offline expansion tests (#102740, @gnufied) [SIG Storage and Testing]
- Bump klog to v2.9.0, fixing log lines that render as byte arrays (#105407, @ehashman) [SIG Architecture, CLI, Cloud Provider, Cluster Lifecycle, Instrumentation and Storage]
- Fix overriding logs files on reboot. (#105614, @rphillips) [SIG Node]

*   Fixed a bug where error log messages were breaking into two lines. ([#49826](https://github.com/kubernetes/kubernetes/pull/49826),[ @dixudx](https://github.com/dixudx))

- Fixes bug where OpenAPIV2 config was used instead of V3, and gives clear error message about OpenAPIV3 requirement ([#120612](https://github.com/kubernetes/kubernetes/pull/120612), [@alexzielenski](https://github.com/alexzielenski)) [SIG API Machinery]

### Azure