- Introduce a churn operator to scheduler perf testing framework. ([#98900](https://github.com/kubernetes/kubernetes/pull/98900), [@Huang-Wei](https://github.com/Huang-Wei)) [SIG Scheduling and Testing]

pkg debug/elf, const DT_MIPS_MSYM DynTag
pkg debug/elf, const DT_MIPS_OPTIONS = 1879048233
pkg debug/elf, const DT_MIPS_OPTIONS DynTag
pkg debug/elf, const DT_MIPS_PERF_SUFFIX = 1879048238
pkg debug/elf, const DT_MIPS_PERF_SUFFIX DynTag
pkg debug/elf, const DT_MIPS_PIXIE_INIT = 1879048227
pkg debug/elf, const DT_MIPS_PIXIE_INIT DynTag
pkg debug/elf, const DT_MIPS_PLTGOT = 1879048242

- For raw block CSI volumes on Kubernetes, kubelet was incorrectly calling CSI NodeStageVolume for every single "map" (i.e. raw block "mount") operation for a volume already attached to the node. This PR ensures it is only called once per volume per node. ([#112403](https://github.com/kubernetes/kubernetes/pull/112403), [@akankshakumari393](https://github.com/akankshakumari393)) [SIG Storage]

  // the ReadOnly setting in VolumeMounts.
  // +optional
  optional bool readOnly = 5;

  // kind expected values are Shared: multiple blob disks per storage account  Dedicated: single blob disk per storage account  Managed: azure managed data disk (only in managed availability set). defaults to shared
  optional string kind = 6;
}

- The `apiserver` exposes 4 new metrics that allow to track the status of the Service CIDRs allocations:
      - current number of available IPs per Service CIDR
      - current number of used IPs per Service CIDR
      - total number of allocation per Service CIDR
      - total number of allocation errors per ServiceCIDR ([#104119](https://github.com/kubernetes/kubernetes/pull/104119), [@aojea](https://github.com/aojea))

    String INDEX_REINDEX_BODY = "index.reindex.body";

    /** The key of the configuration. e.g. adaptive */
    String INDEX_REINDEX_requests_per_second = "index.reindex.requests_per_second";

    /** The key of the configuration. e.g. false */
    String INDEX_REINDEX_REFRESH = "index.reindex.refresh";

    /** The key of the configuration. e.g. 1m */

## Changelog since v1.8.12

### Other notable changes

* Add MAX_PODS_PER_NODE env so that user can use it to specify the default max pods per node for the cluster. IP_ALIAS_SIZE will be changed accordingly. Must have ip alias enabled. ([#63466](https://github.com/kubernetes/kubernetes/pull/63466), [@grayluck](https://github.com/grayluck))

- github.com/hashicorp/mdns: [v1.0.0](https://github.com/hashicorp/mdns/tree/v1.0.0)
- github.com/hashicorp/memberlist: [v0.1.3](https://github.com/hashicorp/memberlist/tree/v0.1.3)
- github.com/hashicorp/serf: [v0.8.2](https://github.com/hashicorp/serf/tree/v0.8.2)
- github.com/jpillora/backoff: [v1.0.0](https://github.com/jpillora/backoff/tree/v1.0.0)
- github.com/jstemmer/go-junit-report: [v0.9.1](https://github.com/jstemmer/go-junit-report/tree/v0.9.1)

- github.com/hashicorp/mdns: [v1.0.0](https://github.com/hashicorp/mdns/tree/v1.0.0)
- github.com/hashicorp/memberlist: [v0.1.3](https://github.com/hashicorp/memberlist/tree/v0.1.3)
- github.com/hashicorp/serf: [v0.8.2](https://github.com/hashicorp/serf/tree/v0.8.2)
- github.com/magiconair/properties: [v1.8.5](https://github.com/magiconair/properties/tree/v1.8.5)
- github.com/mattn/go-colorable: [v0.0.9](https://github.com/mattn/go-colorable/tree/v0.0.9)

You can read more in the official blog post [Kubernetes Release Cadence Change: Here’s What You Need To Know](https://blog.k8s.io/2021/07/20/new-kubernetes-release-cadence/).