- Kubeadm: fixed the bug where the v1beta4 Timeouts.EtcdAPICall field was not respected in etcd client operations, and the default timeout of 2 minutes was always used. ([#129862](https://github.com/kubernetes/kubernetes/pull/129862), [@neolit123](https://github.com/neolit123)) [SIG Cluster Lifecycle]

### Other (Cleanup or Flake)

		if len(policyBuf) > maxSVCSessionPolicySize {
			return auth.Credentials{}, time.Time{}, errSessionPolicyTooLarge
		}
	}

	// found newly requested service account, to be same as
	// parentUser, reject such operations.
	if parentUser == opts.accessKey {
		return auth.Credentials{}, time.Time{}, errIAMActionNotAllowed
	}
	if siteReplicatorSvcAcc == opts.accessKey && !opts.allowSiteReplicatorAccount {

containers are only an alpha feature. To allow using CSI storage on Windows nodes, [CSIProxy](https://github.com/kubernetes-csi/csi-proxy) enables CSI node plugins to be deployed as unprivileged pods, using the proxy to perform privileged storage operations on the node.

Another feature moving to GA in v1.22 is CSI Service Account Token support. This feature allows CSI drivers to use pods' [bound service account tokens](https://kubernetes.io/docs/reference/access-authn-authz/service-ac...

- Add `csi_operations_seconds` metric on kubelet that exposes CSI operations duration and status for node CSI operations. ([#98979](https://github.com/kubernetes/kubernetes/pull/98979), [@Jiawei0227](https://github.com/Jiawei0227)) [SIG Instrumentation and Storage]

   ([#122558](https://github.com/kubernetes/kubernetes/pull/122558), [@linxiulei](https://github.com/linxiulei))
- Fixed CEL estimated cost for expressions that perform operations on the result of `map()` operations (e.g., `.map(...).exists(...)` ) to have the correct estimated cost instead of an unbounded cost.
   ([#123562](https://github.com/kubernetes/kubernetes/pull/123562), [@jpbetz](https://github.com/jpbetz))

* Azure cloudprovider: Reduce the polling delay for all azure clients to 5 seconds. This should speed up some operations at the cost of some additional quota. ([#43699](https://github.com/kubernetes/kubernetes/pull/43699), [@colemickens](https://github.com/colemickens))

* Fixes a flaw (CVE-2019-11253) in json/yaml decoding where large or malformed documents could consume excessive server resources. Request bodies for normal API requests (create/delete/update/patch operations of regular resources) are now limited to 3MB. ([#83261](https://github.com/kubernetes/kubernetes/pull/83261), [@liggitt](https://github.com/liggitt))

* GCE provider: Log full contents of long operations ([#26962](https://github.com/kubernetes/kubernetes/pull/26962), [@zmerlynn](https://github.com/zmerlynn))

  The incorrect cost was evident when the result of a function was used in subsequent operations. ([#119800](https://github.com/kubernetes/kubernetes/pull/119800), [@jpbetz](https://github.com/jpbetz)) [SIG API Machinery, Auth and Cloud Provider]

## Changelog since v1.9.1

### Other notable changes

* Fixes authentication problem faced during various vSphere operations. ([#57978](https://github.com/kubernetes/kubernetes/pull/57978), [@prashima](https://github.com/prashima))