- Added CEL runtime cost calculation into ValidatingAdmissionPolicy, matching the evaluation cost
  restrictions that already apply to CustomResourceDefinition.
  If rule evaluation uses more compute than the limit, the API server aborts the evaluation and the
  admission check that was being performed is aborted; the `failurePolicy` for the ValidatingAdmissionPolicy

- Remove the deprecated metrics "scheduling_algorithm_preemption_evaluation_seconds" and "binding_duration_seconds", suggest to use "scheduler_framework_extension_point_duration_seconds" instead. ([#96447](https://github.com/kubernetes/kubernetes/pull/96447), [@chendave](https://github.com/chendave)) [SIG Cluster Lifecycle,...

      - `scheduler_scheduling_algorithm_predicate_evaluation` -> `scheduler_scheduling_algorithm_predicate_evaluation_seconds`
      - `scheduler_scheduling_algorithm_priority_evaluation` -> `scheduler_scheduling_algorithm_priority_evaluation_seconds`
      - `scheduler_scheduling_algorithm_preemption_evaluation` -> `scheduler_scheduling_algorithm_preemption_evaluation_seconds`

  `scheduler_e2e_scheduling_latency_microseconds`
  `scheduler_scheduling_algorithm_latency_microseconds`
  `scheduler_scheduling_algorithm_predicate_evaluation`
  `scheduler_scheduling_algorithm_priority_evaluation`
  `scheduler_scheduling_algorithm_preemption_evaluation`
  `scheduler_scheduling_binding_latency_microseconds ([#83838](https://github.com/kubernetes/kubernetes/pull/83838`), [@RainbowMango](https://github.com/RainbowMango))

- Added `apiserver_admission_match_condition_evaluation_seconds` and `apiserver_admission_match_condition_exclusions_total` metrics. ([#119311](https://github.com/kubernetes/kubernetes/pull/119311), [@ivelichkovich](https://github.com/ivelichkovich))

* Fixed unmounting of vSphere volumes when kubelet runs in a container. ([#49111](https://github.com/kubernetes/kubernetes/pull/49111), [@jsafrane](https://github.com/jsafrane))
* use informers for quota evaluation of core resources where possible ([#49230](https://github.com/kubernetes/kubernetes/pull/49230), [@deads2k](https://github.com/deads2k))

- Scheduler alpha metrics binding_duration_seconds and scheduling_algorithm_preemption_evaluation_seconds are deprecated, Both of those metrics are now covered as part of framework_extension_point_duration_seconds, the former as a PostFilter the latter and a Bind plugin. The plan is to remove both in 1.21 ([#95001](https://github.com/kubern...

  - *apiserver_cache_list_fetched_objects_total*: Counter of objects read from watch cache in the course of serving a LIST request, broken down by resource_prefix and index_name
  - *apiserver_cache_list_evaluated_objects_total*: Counter of objects tested in the course of serving a LIST request from watch cache, broken down by resource_prefix

    the ability of the controller to replace pods because the controllers do not
    reuse pod names (they use generate-name).
  * User-written controllers that reuse names of pod objects should evaluate this change.
  * When deleting an object with `kubectl delete ... --grace-period=0`, the client will
    begin a graceful deletion and wait until the resource is fully deleted.  To force

- Kube-apiserver: jsonpath expressions with consecutive recursive descent operators are no longer evaluated for custom resource printer columns ([#93408](https://github.com/kubernetes/kubernetes/pull/93408), [@joelsmith](https://github.com/joelsmith)) [SIG API Machinery]