### Immutable Secrets and ConfigMaps

Immutable Secrets and ConfigMaps graduates to GA. This feature allows users to specify that the contents of a particular Secret or ConfigMap is immutable for its object lifetime. For such instances, Kubelet will not watch/poll for changes and therefore reducing apiserver load.

- The alpha feature `ImmutableEphemeralVolumes` enables an `immutable` field in both Secret and ConfigMap objects to mark their contents as immutable. ([#86377](https://github.com/kubernetes/kubernetes/pull/86377), [@wojtek-t](https://github.com/wojtek-t)) [SIG Apps, CLI and Testing]

#### Other API changes:

* Allow PSP's to specify a whitelist of allowed paths for host volume ([#50212](https://github.com/kubernetes/kubernetes/pull/50212), [@jhorwit2](https://github.com/jhorwit2))

- kubectl: When an object can't be updated and must be deleted by force, kubectl will now recreating resources for immutable fields.([#66602](https://github.com/kubernetes/kubernetes/pull/66602), [@dixudx](https://github.com/dixudx))

 a consistent way. This restriction may be lifted in the future, but
 it is likely that that selectors will remain immutable after the move to v1.
 You can continue to use code that depends on mutable selectors by calling
 the apps/v1beta1 API in this release, but you should start planning for code
 that does not depend on mutable selectors.

 - Extended Resources are fully-qualified resource names outside the

- Relaxed API validation to allow pod node selector to be mutable for gated pods (additions only, no deletions or mutations). ([#116161](https://github.com/kubernetes/kubernetes/pull/116161), [@danielvegamyhre](https://github.com/danielvegamyhre))

* Include kms-plugin-container.manifest to master manifests tarball. ([#65035](https://github.com/kubernetes/kubernetes/pull/65035), [@immutableT](https://github.com/immutableT))
* kubeadm - Increase the manifest upgrade timeout to make upgrades more reliable. ([#65029](https://github.com/kubernetes/kubernetes/pull/65029), [@detiber](https://github.com/detiber))

* Included kms-plugin-container.manifest to master nifests tarball. ([#65035](https://github.com/kubernetes/kubernetes/pull/65035), [@immutableT](https://github.com/immutableT))
* Fixed missing nodes lines when kubectl top nodes ([#64389](https://github.com/kubernetes/kubernetes/pull/64389), [@yue9944882](https://github.com/yue9944882)) sig-cli

- github.com/hashicorp/go-cleanhttp: [v0.5.1](https://github.com/hashicorp/go-cleanhttp/tree/v0.5.1)
- github.com/hashicorp/go-immutable-radix: [v1.0.0](https://github.com/hashicorp/go-immutable-radix/tree/v1.0.0)
- github.com/hashicorp/go-msgpack: [v0.5.3](https://github.com/hashicorp/go-msgpack/tree/v0.5.3)

* Mirror pods must now indicate the nodeName they are bound to on creation. The mirror pod annotation is now treated as immutable and cannot be added to an existing pod, removed from a pod, or modified. ([#45775](https://github.com/kubernetes/kubernetes/pull/45775), [@liggitt](https://github.com/liggitt))