- `scheduler_async_api_call_execution_total`: tracks executed API calls by call type and result (success/error)
    - `scheduler_async_api_call_duration_seconds`: histogram of API call execution duration by call type and result

- Kubeadm: during execution of the "check expiration" command, treat the etcd CA as external if there is a missing etcd CA key file (etcd/ca.key) and perform the proper validation on certificates signed by the etcd CA. Additionally, make sure that the CA for all entries in...

- The scheduler's metric `plugin_execution_duration_seconds` now records `PreEnqueue` plugins execution seconds. ([#116201](https://github.com/kubernetes/kubernetes/pull/116201), [@sanposhiho](https://github.com/sanposhiho))

* fluentd config for GKE clusters updated: detect exceptions in container log streams and forward them as one log entry. ([#39656](https://github.com/kubernetes/kubernetes/pull/39656), [@thomasschickinger](https://github.com/thomasschickinger))

- Verify that CRD default values in OpenAPI specs are pruned, with the exceptions of values under `metadata`. ([#78829](https://github.com/kubernetes/kubernetes/pull/78829), [@sttts](https://github.com/sttts))

- Client-go: Optimized leaders renewing leases by updating leader lock optimistically without getting the record from the API server first. Also, a new metric `leader_election_slowpath_total` was added to allow users to monitor how many leader elections are updated non-optimistically.
   ([#122069](https://github.com/kubernetes/kubernetes/pull/122069), [@linxiulei](https://github.com/linxiulei))
- Locked the GA feature-gate `ConsistentHTTPGetHandlers` to default.

- Kubeadm: during execution of the `certs check-expiration` command, treat the etcd CA as external if there is a missing etcd CA key file (etcd/ca.key) and perform the proper validation on certificates signed by the etcd CA. Additionally, make sure that the CA for all entries...

encryption // streams to be done in parallel, which is achieved by interleaving // vcipher instructions from each stream. This is also referred to as // stitching, and provides significant performance improvements. // Some macros are defined which enable execution for big or little // endian as well as different ISA targets. //func (g *gcmAsm) counterCrypt(out, in []byte, counter *[gcmBlockSize]byte, key[gcmBlockSize]uint32) //func counterCryptASM(xr, out, in, counter, key) TEXT ·counterCryptASM(SB), NOSPLIT,...

- Fixed a bug that mistake use newObj as oldObj in endpoint slice update. ([#92339](https://github.com/kubernetes/kubernetes/pull/92339), [@fatkun](https://github.com/fatkun)) [SIG Apps and Network]

* Fix kubectl describe CronJobs error of `Successful Job History Limit`. ([#77347](https://github.com/kubernetes/kubernetes/pull/77347), [@danielqsj](https://github.com/danielqsj))
* Remove extra pod creation exceptions when daemonset fails to create pods in batches. ([#74856](https://github.com/kubernetes/kubernetes/pull/74856), [@draveness](https://github.com/draveness))