- Newly provisioned PVs by EBS plugin will no longer use the deprecated "failure-domain.beta.kubernetes.io/zone" and "failure-domain.beta.kubernetes.io/region" labels. It will use "topology.kubernetes.io/zone" and "topology.kubernetes.io/region" labels instead. ([#99130](https://github.com/kubernetes/kubernetes/pull/99130), [@ayberk](https://github.com/ayberk))...

* Added anti-affinity to kube-dns pods. Otherwise the "no single point of failure" setting doesn't actually work (a single node failure can still take down the entire cluster). ([#57683](https://github.com/kubernetes/kubernetes/pull/57683), [@vainu-arto](https://github.com/vainu-arto))

### API-Machinery

- The job controller back-off logic is now decoupled from workqueue. In case of parallelism > 1, if there are multiple new failures in a reconciliation cycle, all the failures are taken into account to compute the back-off. Previously, the back-off kicked in for all types of failures; with this change, only pod failures are taken into account. If the back-off limits exceeds, the job is marked as failed immediately; before this change, the job is marked as failed in the...

* fix the create azure file pvc failure if there is no storage account in current resource group ([#56557](https://github.com/kubernetes/kubernetes/pull/56557), [@andyzhangx](https://github.com/andyzhangx))
* Increase allowed lag for ssh key sync loop in tunneler to allow for one failure ([#60068](https://github.com/kubernetes/kubernetes/pull/60068), [@wojtek-t](https://github.com/wojtek-t))

    * If the serialization type is 'application/json':
    * If serialization fails, and the original status code was an failure (e.g. 4xx or 5xx), the original status code will be returned.

- Kube-apiserver adds two new alpha metrics `conversion_webhook_request_total` and `conversion_webhook_duration_seconds` that allow users to monitor requests to CRD conversion webhooks, split by result, and failure_type (In case of failure). ([#118292](https://github.com/kubernetes/kubernetes/pull/118292), [@cchapla](https://github.com/cchapla)) [SIG API Machinery, Architecture and Instrumentation]

        * `beta.kubernetes.io/instance-type`
        * `beta.kubernetes.io/os`
        * `beta.kubernetes.io/arch`
        * `failure-domain.kubernetes.io/zone`
        * `failure-domain.kubernetes.io/region`
        * `failure-domain.beta.kubernetes.io/zone`
        * `failure-domain.beta.kubernetes.io/region`
        * `[*.]kubelet.kubernetes.io/*`
        * `[*.]node.kubernetes.io/*`

* Deprecate the beta labels for zones ("failure-domain.beta.kubernetes.io/zone") and  ([#81431](https://github.com/kubernetes/kubernetes/pull/81431), [@andrewsykim](https://github.com/andrewsykim))
    * regions ("failure-domain.beta.kubernetes.io/region") in favor of their GA equivalents:
    * "topology.kubernetes.io/zone" and "topology.kubernetes.io/region".

* Ensure Azure load balancer cleaned up on 404 or 403 when deleting LoadBalancer services. ([#75256](https://github.com/kubernetes/kubernetes/pull/75256), [@feiskyer](https://github.com/feiskyer))
* Fix kubelet start failure issue on Azure Stack due to InstanceMetadata setting ([#74936](https://github.com/kubernetes/kubernetes/pull/74936), [@rjaini](https://github.com/rjaini))

* fix azure disk mount failure on coreos and some other distros ([#54334](https://github.com/kubernetes/kubernetes/pull/54334), [@andyzhangx](https://github.com/andyzhangx))
* Fix for service controller so that it won't retry on doNotRetry service update failure. ([#54184](https://github.com/kubernetes/kubernetes/pull/54184), [@MrHohn](https://github.com/MrHohn))