### Garbage Collector

- Fixes an issue that can result in namespaced custom resources being orphaned when their namespace is deleted, if the CRD defining the custom resource is removed concurrently with namespaces being deleted, then recreated. ([#93790](https://github.com/kubernetes/kubernetes/pull/93790), [@liggitt](https://github.com/liggitt)) [SIG API Machinery and Apps]

 and is deleted after 24 hours by default to limit the exposure of the
 valuable credential. You can create a new Bootstrap Token with
 `kubeadm token create` or make the default token permanently valid by specifying
 `--token-ttl 0` to `kubeadm init`. The default token can later be deleted with
 `kubeadm token delete`.

## Changelog since v1.18.14

## Changes by Kind

### Bug or Regression

- Fix Azure file share not deleted issue when the namespace is deleted ([#97417](https://github.com/kubernetes/kubernetes/pull/97417), [@andyzhangx](https://github.com/andyzhangx)) [SIG Cloud Provider and Storage]

- NodeLifecycleController: When node lease feature is enabled, node lease will be deleted when the corresponding node is deleted. ([#70034](https://github.com/kubernetes/kubernetes/pull/70034), [@wangzhen127](https://github.com/wangzhen127))

- To avoid soft-deleted pods incorrectly affecting scale up replica count calculations, the HPA controller will stop counting soft-deleted pods for scaling purposes. ([#67067](https://github.com/kubernetes/kubernetes/pull/67067), [@moonek](https://github.com/moonek))

- For vSphere Cloud Provider, If VM of worker node is deleted, the node will also be deleted by node controller ([#92608](https://github.com/kubernetes/kubernetes/pull/92608), [@lubronzhan](https://github.com/lubronzhan)) [SIG Cloud Provider]

* change azure disk host cache to ReadOnly by default ([#72229](https://github.com/kubernetes/kubernetes/pull/72229), [@andyzhangx](https://github.com/andyzhangx))
* Nodes deleted in the cloud provider with Ready condition `Unknown` should also be deleted on the API server.  ([#72559](https://github.com/kubernetes/kubernetes/pull/72559), [@andrewsykim](https://github.com/andrewsykim))

  Scheduling hints allow the scheduler to retry scheduling Pods that were previously rejected by the VolumeRestriction plugin if the Pod is deleted and the deleted Pod conflicts with the existing volumes of the current Pod. ([#125279](https://github.com/kubernetes/kubernetes/pull/125279), [@HirazawaUi](https://github.com/HirazawaUi)) [SIG Scheduling and Storage]
- Kube-scheduler implements scheduling hints for the VolumeRestriction plugin.

- Finalizer Protection for Service LoadBalancers (ServiceLoadBalancerFinalizer) has been added as an Alpha feature, which is disabled by default. This feature ensures the Service resource is not fully deleted until the correlating load balancer resources are deleted. ([#78262](https://github.com/kubernetes/kubernetes/pull/78262), [@MrHohn](https://github.com/MrHohn))