### Structured Logging in Kubelet

Kubelet has adopted structured logging, thanks to community effort in accomplishing this within the release timeline. Structured logging in the project remains an ongoing effort -- for folks interested in participating, [keep an eye / chime in to the mailing list discussion](https://groups.google.com/g/kubernetes-dev/c/y4WIw-ntUR8).

### Native. C Export

- [`KT-56182`](https://youtrack.jetbrains.com/issue/KT-56182) [K2/N] C export doesn't work for non-root packages with K2

### Native. C and ObjC Import

- [`KT-59642`](https://youtrack.jetbrains.com/issue/KT-59642) Remove ability to import forward declaration by library package name

## Detailed Bug Fixes And Changes

### API Machinery

- client-go: `PortForwarder.GetPorts()` now contain correct local port if no local port was initially specified when setting up the port forwarder ([#73676](https://github.com/kubernetes/kubernetes/pull/73676), [@martin-helmich](https://github.com/martin-helmich))

syntax = "proto2";

package k8s.io.api.core.v1;

import "k8s.io/apimachinery/pkg/api/resource/generated.proto";
import "k8s.io/apimachinery/pkg/apis/meta/v1/generated.proto";
import "k8s.io/apimachinery/pkg/runtime/generated.proto";
import "k8s.io/apimachinery/pkg/runtime/schema/generated.proto";
import "k8s.io/apimachinery/pkg/util/intstr/generated.proto";

### Internal Storage Layer

## 0.51.0

* Re-export utils from Starlette:
    * This allows using things like `from fastapi.responses import JSONResponse` instead of `from starlette.responses import JSONResponse`.
    * It's mainly syntax sugar, a convenience for developer experience.

## Other notable changes

### API Machinery

- Added port configuration to Admission webhook configuration service reference.
- Added port configuration to AuditSink webhook configuration service reference.
- Added port configuration to CRD Conversion webhook configuration service reference.

* The behavior of the default handler for 404 requests fro the GCE Ingress load balancer is slightly modified in the sense that it now exports metrics using prometheus. The metrics exported include:  ([#79106](https://github.com/kubernetes/kubernetes/pull/79106), [@vbannai](https://github.com/vbannai))
    * - http_404_request_total  (the number of 404 requests handled)

* Stackdriver cluster logging now deploys a new component to export Kubernetes events. ([#46700](https://github.com/kubernetes/kubernetes/pull/46700), [@crassirostris](https://github.com/crassirostris))

* Stackdriver Logging deployment exposes metrics on node port 31337 when enabled. ([#47402](https://github.com/kubernetes/kubernetes/pull/47402), [@crassirostris](https://github.com/crassirostris))

Here's the release [scalability validation report].

[SIG Scalability]: https://github.com/kubernetes/community/tree/master/sig-scalability
[scalability validation report]: https://github.com/kubernetes/sig-release/blob/master/releases/release-1.8/scalability_validation_report.md

### SIG Scheduling