vSphere releases less than 67u3 are deprecated as of v1.21. Please consider upgrading vSphere to 67u3 or above. vSphere CSI Driver requires minimum vSphere 67u3.
  

* Fix in vSphere Cloud Provider to handle upgrades from kubernetes version less than v1.9.4 to v1.9.4 and above. ([#62919](https://github.com/kubernetes/kubernetes/pull/62919), [@abrarshivani](https://github.com/abrarshivani))

* removed unsafe double RLock in cpumanager ([#62464](https://github.com/kubernetes/kubernetes/pull/62464), [@choury](https://github.com/choury))
* Fix in vSphere Cloud Provider to handle upgrades from kubernetes version less than v1.9.4 to v1.9.4 and above. ([#62919](https://github.com/kubernetes/kubernetes/pull/62919), [@abrarshivani](https://github.com/abrarshivani))

* Fixed in vSphere Cloud Provider to handle upgrades from kubernetes version less than v1.9.4 to v1.9.4 and above. ([#62919](https://github.com/kubernetes/kubernetes/pull/62919), [@abrarshivani](https://github.com/abrarshivani))

* kubeadm: Implemented preflight check to ensure that number of CPUs ([#70048](https://github.com/kubernetes/kubernetes/pull/70048), [@bart0sh](https://github.com/bart0sh))
    * on the master node is not less than required.
* Reduce memory utilization of admission webhook metrics by removing resource related labels. ([#69895](https://github.com/kubernetes/kubernetes/pull/69895), [@jpbetz](https://github.com/jpbetz))

- Count pod overhead against an entity's ResourceQuota ([#99600](https://github.com/kubernetes/kubernetes/pull/99600), [@gjkim42](https://github.com/gjkim42)) [SIG API Machinery and Node]
- EndpointSlice controller is now less likely to emit FailedToUpdateEndpointSlices events. ([#100146](https://github.com/kubernetes/kubernetes/pull/100146), [@robscott](https://github.com/robscott)) [SIG Apps and Network]

  to fetch the OpenAPI may be slower. ([#118808](https://github.com/kubernetes/kubernetes/pull/118808), [@Jefftree](https://github.com/Jefftree))
- Shrank the `OpenAPI v2` spec by more than 50%, especially for less CPU resource consumption. ([#118204](https://github.com/kubernetes/kubernetes/pull/118204), [@sttts](https://github.com/sttts))

* Disabled ScheduleDaemonSetPods if kubelet version less than 1.11; and ScheduleDaemonSetPods is not supported on a 1.13 control plane / 1.10 kubelet split. ([#69566](https://github.com/kubernetes/kubernetes/pull/69566), [@k82cn](https://github.com/k82cn))

allows the client to continue the previous list call repeatedly until all results are retrieved.  The resulting list is identical to a list call that does not perform chunking, thanks to capabilities provided by etcd3.  This allows the server to use less memory and CPU when very large lists are returned. This feature is gated as APIListChunking and is not enabled by default. The 1.9 release will begin using this by default.([#48921](https://github.com/kubernetes/kubernetes/pull/48921))

*...

- EndpointSlice controller is now less likely to emit FailedToUpdateEndpointSlices events. ([#100114](https://github.com/kubernetes/kubernetes/pull/100114), [@robscott](https://github.com/robscott)) [SIG Apps and Network]