- `--log-flush-frequency` had no effect in several commands or was missing. Help and warning texts were not always using the right format for a command (`add_dir_header` instead of `add-dir-header`). Fixing this included cleaning up flag handling in component-base/logs: that package no longer adds flags to the global flag sets. Commands which want the klog and `--log-flush-frequency` flags must explicitly call `logs.AddFlags`; the new...

### Other (Cleanup or Flake)

- A v2-level info log will be added, which will output the details of the pod being preempted, including victim and preemptor ([#117214](https://github.com/kubernetes/kubernetes/pull/117214), [@HirazawaUi](https://github.com/HirazawaUi)) [SIG Scheduling]

### Structured logging

SIG Instrumentation standardized the structure of log messages and references to Kubernetes objects. Structured logging makes parsing, processing, storing, querying and analyzing logs easier. New methods in the klog library enforce log message structure.

### EndpointSlices are now enabled by default

- Kubeadm: Strictly enabled only the supported klog flags, disallowing previously available but unrecommended options. This means that hidden flags about klog (including `--alsologtostderr`, `--log-backtrace-at`, `--log-dir`, `--logtostderr`, `--log-file`, `--log-file-max-size`, `--one-output`, `--skip-log-headers`, `--stderrthreshold` and `--vmodule`) are no longer allowed to be used. ([#125179](https://github.com/kubernet...

  fix: consolidate logs for instance not found error (#105365, @nilo19) [SIG Cloud Provider]
- Allow CSI drivers to just run offline expansion tests (#102740, @gnufied) [SIG Storage and Testing]
- Bump klog to v2.9.0, fixing log lines that render as byte arrays (#105407, @ehashman) [SIG Architecture, CLI, Cloud Provider, Cluster Lifecycle, Instrumentation and Storage]
- Fix overriding logs files on reboot. (#105614, @rphillips) [SIG Node]

- Text logging in Kubernetes components now uses [textlogger](https://pkg.go.dev/k8s.io/klog/v2@v2.120.0/textlogger). The same split streams of info and error log entries with buffering of info entries is now also supported for text output (off by default, alpha feature). Previously, this was only supported for JSON. Performance is better also without split streams. ([#114...

- github.com/envoyproxy/protoc-gen-validate: [v0.9.1 → v0.10.1](https://github.com/envoyproxy/protoc-gen-validate/compare/v0.9.1...v0.10.1)
- github.com/golang/glog: [v1.0.0 → v1.1.0](https://github.com/golang/glog/compare/v1.0.0...v1.1.0)
- google.golang.org/grpc: v1.54.0 → v1.56.3
- google.golang.org/protobuf: v1.30.0 → v1.31.0

### Removed
_Nothing has changed._



# v1.28.3

### Kubernetes release cadence change

* no ([#75820](https://github.com/kubernetes/kubernetes/pull/75820), [@YoubingLi](https://github.com/YoubingLi))
* Use stdlib to log stack trace when a panic occurs ([#75853](https://github.com/kubernetes/kubernetes/pull/75853), [@roycaihw](https://github.com/roycaihw))
* Fixes a NPD bug on GCI, so that it disables glog writing to files for log-counter ([#76211](https://github.com/kubernetes/kubernetes/pull/76211), [@wangzhen127](https://github.com/wangzhen127))

* `framework.ExpectNoError` no longer logs the error and instead relies on using the new `log.Fail` as Gomega fail handler. ([#80253](https://github.com/kubernetes/kubernetes/pull/80253), [@pohly](https://github.com/pohly))
* Audit events now log the existence and patch of mutating webhooks.  ([#77824](https://github.com/kubernetes/kubernetes/pull/77824), [@roycaihw](https://github.com/roycaihw))