## New Features

- kubelet: When node lease feature is enabled, kubelet reports node status to api server only if there is some change or it didn't report over last report interval. ([#69753](https://github.com/kubernetes/kubernetes/pull/69753), [@wangzhen127](https://github.com/wangzhen127))

* The formerly publicly-available cAdvisor web UI that the kubelet ran on port 4194 by default is now turned off by default. The flag configuring what port to run this UI on `--cadvisor-port` was deprecated in v1.10. Now the default is `--cadvisor-port=0`, in other words, to not run the web server. If you still need to run cAdvisor, the recommended way to run it is via a DaemonSet. Note that the `--cadvisor-port` will be removed in v1.12 ([#63881](https://github.com/kubernetes/kubernetes/pull/63881),...

- Fix counting error in service/nodeport/loadbalancer quota check ([#97451](https://github.com/kubernetes/kubernetes/pull/97451), [@pacoxu](https://github.com/pacoxu)) [SIG API Machinery, Network and Testing]
- Fix kubectl-convert import known versions ([#97754](https://github.com/kubernetes/kubernetes/pull/97754), [@wzshiming](https://github.com/wzshiming)) [SIG CLI and Testing]

* 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))

- E2e framework: added `--report-complete-ginkgo` and `--report-complete-junit` parameters. They work like `ginkgo --json-report <report dir>/ginkgo/report.json --junit-report <report dir>/ginkgo/report.xml`. ([#115678](https://github.com/kubernetes/kubernetes/pull/115678), [@pohly](https://github.com/pohly)) [SIG Testing]

* Fixes issue where subpath readOnly mounts failed ([#63045](https://github.com/kubernetes/kubernetes/pull/63045), [@msau42](https://github.com/msau42))
* Fix in vSphere Cloud Provider to report disk is detach when VM is not found. ([#62220](https://github.com/kubernetes/kubernetes/pull/62220), [@abrarshivani](https://github.com/abrarshivani))

Here's the release [scalability validation report].

[SIG Scalability]: https://github.com/kubernetes/community/tree/master/sig-scalability
[scalability validation report]: https://github.com/kubernetes/sig-release/blob/master/releases/release-1.8/scalability_validation_report.md

### SIG Scheduling

- client-go discovery clients constructed using `NewDiscoveryClientForConfig` or `NewDiscoveryClientForConfigOrDie` default...

- 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://github.com/sttts))...

- 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/k...