- Secure serving on port 10258 to cloud-controller-manager (configurable via `--secure-port`) is now enabled. Delegated authentication and authorization are to be configured using the same flags as for aggregated API servers. Without configuration, the secure port will only allow access to `/healthz`. ([#67069](https://github.com/kubernetes/kubernetes/pull/67069), [@sttts](https...

* The ability to use the insecure HTTP port of kube-controller-manager and cloud-controller-manager has been deprecated, and will be removed in a future release. Use `--secure-port` and `--bind-address` instead. ([#59582](https://github.com/kubernetes/kubernetes/pull/59582), [@sttts](https://github.com/sttts))

### Feature

- Kubernetes is now built with Golang 1.16.9 (#105672, @cpanato) [SIG Cloud Provider, Instrumentation, Release and Testing]

### Failing Test

- Backport: e2e.test now uses the secure port to retrieve metrics data to ensure compatibility with 1.21 and 1.22 (for upgrade tests) (#104328, @pohly) [SIG API Machinery, Instrumentation, Storage and Testing]

### Bug or Regression

#### kubectl:

* The formerly publicly-available cAdvisor...

- GCERegionalPersistentDisk feature is GA now! ([#70716](https://github.com/kubernetes/kubernetes/pull/70716), [@jingxu97](https://github.com/jingxu97))
- Added secure port 10259 to the kube-scheduler (enabled by default) and deprecate old insecure port 10251. Without further flags self-signed certs are created on startup in memory. ([#69663](https://github.com/kubernetes/kubernetes/pull/69663), [@sttts](https://github.com/sttts))

zz_generated_*_test.go

# Just in time generated data in the source, should never be committed
/test/e2e/generated/bindata.go

# This file used by some vendor repos (e.g. github.com/go-openapi/...) to store secret variables and should not be ignored
!\.drone\.sec

/bazel-*
*.pyc

# generated by verify-vendor.sh

- Kubeadm: add the deprecated flag --port=0 to kube-controller-manager and kube-scheduler manifests to disable insecure serving. Without this flag the components by default serve (e.g. /metrics) insecurely on the default node interface (controlled by --address). Users that wish to override this behavior and enable insecure serving can pass a custom --port=X via kubeadm's "extraArgs" mechanic for these components. ([#92720](https://github.com/kubernetes/kubernetes/pull/92720),...

- The Scheduler did not run the plugin Score method when its PreScore method returned a Skip status. In other words, the PreScore/Score plugin could return a Skip status in PreScore if the plugin did nothing in Score for that Pod. ([#115652](https://github.com/kubernetes/kubernetes/pull/115652), [@AxeZhan](https://github.com/AxeZhan))

* Adds --append-hash flag to kubectl create configmap/secret, which will append a short hash of the configmap/secret contents to the name during creation. ([#49961](https://github.com/kubernetes/kubernetes/pull/49961), [@mtaufen](https://github.com/mtaufen))