### (No, really, you MUST read this before you upgrade)

		}
	case "limits.memory", "requests.memory":
		if !validContainerResourceDivisorForMemory.Has(divisor.String()) {
			allErrs = append(allErrs, field.Invalid(fldPath.Child("divisor"), rName, "only divisor's values 1, 1k, 1M, 1G, 1T, 1P, 1E, 1Ki, 1Mi, 1Gi, 1Ti, 1Pi, 1Ei are supported with the memory resource"))
		}

### Windows support improved

### CSI Service Account Token

if(p==="grid-auto-columns"){t.warn("grid-auto-columns is not supported by IE",{node:f});return}else if(p==="grid-auto-rows"){t.warn("grid-auto-rows is not supported by IE",{node:f});return}else if(p==="grid-auto-flow"){let x=d.some(w=>w.prop==="grid-template-rows"),y=d.some(w=>w.prop==="grid-template-columns");Zo(f)?t.warn("grid-auto-flow is not supported by IE",{node:f}):m.includes("dense")?t.warn("grid-auto-flow: dense is not supported by IE",{node:f}):!x&&!y&&t.warn("grid-auto-flow works only if...

`kubectl alpha debug` graduates from alpha to beta in 1.20, becoming `kubectl debug`.
`kubectl debug` provides support for common debugging workflows directly from kubectl. Troubleshooting scenarios supported in this release of `kubectl` include:
Troubleshoot workloads that crash on startup by creating a copy of the pod that uses a different container image or command.

## Changelog since v1.8.10

### Action Required

* ACTION REQUIRED: In-place node upgrades to this release from versions 1.7.14, 1.8.9, and 1.9.4 are not supported if using subpath volumes with PVCs.  Such pods should be drained from the node first. ([#61373](https://github.com/kubernetes/kubernetes/pull/61373), [@msau42](https://github.com/msau42))

### Other notable changes

feature gate is enabled, user should not upgrade to Kubernetes v1.22. vSphere CSI Driver does not support Kubernetes v1.22 yet because it uses v1beta1 CRD APIs. Support for v1.22 will be added at a later release. Check the following document for supported Kubernetes releases for a given [vSphere CSI Driver version](https://vsphere-csi-driver.sigs.k8s.io/compatiblity_matrix.html#compatibility-matrix-for-vsphere-csi-driver).

### Workloads that saturate nodes with pods may see pods that...

All StorageClass parameters for volume provisioning and all features supported with PersistentVolumeClaims are supported.

### Skip Volume Ownership change graduates to GA

The feature to configure volume permission and ownership change policy for Pods moved to GA in 1.23.

- In `kube-proxy`: The "userspace" proxy mode (deprecated for over a year) is no
  longer supported on either Linux or Windows. Users should use "iptables" or "ipvs"
  on Linux, or "kernelspace" on Windows.
   ([#112133](https://github.com/kubernetes/kubernetes/pull/112133), [@knabben](https://github.com/knabben))