- Added a new container based image for running e2e tests ([#69368](https://github.com/kubernetes/kubernetes/pull/69368), [@dims](https://github.com/dims))
- The `LC_ALL` and `LC_MESSAGES` env vars can now be used to set desired locale for `kubectl` while keeping `LANG` unchanged. ([#69500](https://github.com/kubernetes/kubernetes/pull/69500), [@m1kola](https://github.com/m1kola))

- Update klog v2.9.0. ([#102332](https://github.com/kubernetes/kubernetes/pull/102332), [@pacoxu](https://github.com/pacoxu))
- Updated the Graceful Node Shutdown Pod termination reason and message.
  Updated the Graceful Node Shutdown Pod rejection reason and message. ([#102840](https://github.com/kubernetes/kubernetes/pull/102840), [@Kissy](https://github.com/Kissy))

- Modified log messages that were logged with `"v":0` in JSON output although they were debug messages with a higher verbosity. ([#106978](https://github.com/kubernetes/kubernetes/pull/106978), [@p...

### 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.

* NodeController waits for informer sync before doing anything ([#34809](https://github.com/kubernetes/kubernetes/pull/34809), [@gmarek](https://github.com/gmarek))
* azure: lower log priority for skipped nic update message ([#34730](https://github.com/kubernetes/kubernetes/pull/34730), [@colemickens](https://github.com/colemickens))

- JSON log output is configurable and now supports writing info messages to stdout and error messages to stderr. Info messages can be buffered in memory. The default is to write both to stdout without buffering, as before. ([#104873](https://github.com/kubernetes/kubernetes/pull/104873), [@pohly](https://github.com/pohly))

* etcd: stop watcher when watch channel is closed ([#33003](https://github.com/kubernetes/kubernetes/pull/33003), [@hongchaodeng](https://github.com/hongchaodeng))
* etcd3: dereference the UID pointer for a readable error message. ([#33349](https://github.com/kubernetes/kubernetes/pull/33349), [@madhusudancs](https://github.com/madhusudancs))

- Fixes the flooding warning messages about setting volume ownership for configmap/secret volumes ([#92878](https://github.com/kubernetes/kubernetes/pull/92878), [@jvanz](https://github.com/jvanz)) [SIG Instrumentation, Node and Storage]

- Do not include preemptor pod metadata in the event message ([#115023](https://github.com/kubernetes/kubernetes/pull/115023), [@mimowo](https://github.com/mimowo)) [SIG Scheduling]

- When using `kubectl logs <pod-name>` and the pod is not found, the error message now includes the namespace. Previously, the message would be "Error from server (NotFound): pods "my-pod-name" not found". Now, it reflects the namespace in the message as follows: "Error from server (NotFound): pods "my-pod-name" not found in namespace "default"".