- Migrate cmd/proxy/app and pkg/proxy/meta_proxier to structured logging ([#104928](https://github.com/kubernetes/kubernetes/pull/104928), [@jyz0309](https://github.com/jyz0309))

A new [v1beta3 configuration API](https://github.com/kubernetes/kubeadm/issues/1796). It [iterates over v1beta2](https://pkg.go.dev/k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/v1beta3) by adding some long requested features and deprecating some existing ones. The `V1beta3` is now the preferred API version; the `v1beta2` API also remains available and is not yet deprecated.

## Dependencies

### Added
_Nothing has changed._

### Changed
- sigs.k8s.io/kustomize/api: v0.8.5 → v0.8.8
- sigs.k8s.io/kustomize/cmd/config: v0.9.7 → v0.9.10
- sigs.k8s.io/kustomize/kustomize/v4: v4.0.5 → v4.1.2
- sigs.k8s.io/kustomize/kyaml: v0.10.15 → v0.10.17

### Removed
_Nothing has changed._



# v1.21.0

- Fixed EDITOR/KUBE_EDITOR with double-quoted paths with spaces when on Windows cmd.exe. ([#112104](https://github.com/kubernetes/kubernetes/pull/112104), [@oldium](https://github.com/oldium)) [SIG CLI and Windows]

* Add `metrics-port` to kube-proxy cmd flags. ([#72682](https://github.com/kubernetes/kubernetes/pull/72682), [@whypro](https://github.com/whypro))

- Fixed OpenAPI serialization of the x-kubernetes-validations field ([#107970](https://github.com/kubernetes/kubernetes/pull/107970), [@liggitt](https://github.com/liggitt))
- Fixed failed flushing logs in defer function when kubelet cmd exit 1. ([#104774](https://github.com/kubernetes/kubernetes/pull/104774), [@kerthcet](https://github.com/kerthcet))

### Other Deprecations
* Remove cmd/kube-discovery from the tree since it's not necessary anymore ([#42070](https://github.com/kubernetes/kubernetes/pull/42070), [@luxas](https://github.com/luxas))

## Changes to API Resources
### ABAC

- go.opentelemetry.io/contrib/instrumentation/github.com/emicklei/go-restful/otelrestful: v0.20.0
- go.opentelemetry.io/contrib/propagators: v0.20.0
- google.golang.org/grpc/cmd/protoc-gen-go-grpc: v1.1.0

### Changed
- bitbucket.org/bertimus9/systemstat: 0eeff89 → v0.5.0
- cloud.google.com/go: v0.81.0 → v0.97.0

   * Support kube-master-url flag without kubeconfig

   * Fix concurrent R/Ws in dns.go

   * Fix confusing logging when initialize server

   * Fix printf in cmd/kube-dns/app/server.go

   * Fix version on startup and `--version` flag

   * Support specifying port number for nameserver in stubDomains

#### kube-proxy
* Features:

* fix Azure Container Registry anonymous repo image pull error ([#74715](https://github.com/kubernetes/kubernetes/pull/74715), [@andyzhangx](https://github.com/andyzhangx))
* Add `metrics-port` to kube-proxy cmd flags. ([#72682](https://github.com/kubernetes/kubernetes/pull/72682), [@whypro](https://github.com/whypro))