- New Metrics Added for Encryption Configuration Controller
  
  This release adds new metrics to the Encryption Configuration Controller to help monitor the automatic reloading of encryption configuration. The new metrics include:
  
  - `apiserver_encryption_config_controller_automatic_reload_failures_total`: Total number of failed automatic reloads of encryption configuration.

- The API server now re-uses data encryption keys while the kms v2 plugin's key ID is stable.  Data encryption keys are still randomly generated on server start but an atomic counter is used to prevent nonce collisions. ([#116155](https://github.com/kubernetes/kubernetes/pull/116155), [@enj](https://github.com/enj)) [SIG API Machinery, Auth and Testing]

* Fix garbage collection and resource quota when the controller-manager uses --leader-elect=false ([#57340](https://github.com/kubernetes/kubernetes/pull/57340), [@jmcmeek](https://github.com/jmcmeek))
* Fixed encryption key and encryption provider rotation ([#58375](https://github.com/kubernetes/kubernetes/pull/58375), [@liggitt](https://github.com/liggitt))



# v1.8.7

  - The `--experimental-encryption-provider-config` flag is deprecated in favor of `--encryption-provider-config`. The old flag is accepted with a warning but will be removed in 1.14. ([#71206](https://github.com/kubernetes/kubernetes/pull/71206), [@stlaz](https://github.com/stlaz))

* Encryption key and encryption provider rotation now works properly. ([#58375](https://github.com/kubernetes/kubernetes/pull/58375), [@liggitt](https://github.com/liggitt))

* Fixed encryption key and encryption provider rotation ([#58375](https://github.com/kubernetes/kubernetes/pull/58375), [@liggitt](https://github.com/liggitt))

* `AlwaysCheckAllPredicates` is deprecated in scheduler Policy API. ([#86369](https://github.com/kubernetes/kubernetes/pull/86369), [@Huang-Wei](https://github.com/Huang-Wei))
* Kubernetes KMS provider for data encryption now supports disabling the in-memory data encryption key (DEK) cache by setting cachesize to a negative value. ([#86294](https://github.com/kubernetes/kubernetes/pull/86294), [@enj](https://github.com/enj))

- Fix: azure disk detach failure if node not exists ([#82640](https://github.com/kubernetes/kubernetes/pull/82640), [@andyzhangx](https://github.com/andyzhangx))
- Add azure disk encryption(SSE+CMK) support ([#84605](https://github.com/kubernetes/kubernetes/pull/84605), [@andyzhangx](https://github.com/andyzhangx))

  `apiserver_envelope_encryption_key_id_hash_total`, `apiserver_envelope_encryption_key_id_hash_last_timestamp_seconds`, `apiserver_envelope_encryption_key_id_hash_status_last_timestamp_seconds`, `apiserver_encryption_config_controller_automatic_reload_failures_total`, `apiserver_encryption_config_controller_automatic_reload_success_total`, `apiserver_encryption_config_controller_automatic_reload_last_timestamp_seconds`.
  

- Added a new metric `apiserver_encryption_config_controller_automatic_reloads_total` to measure the total number of API server encryption configuration reload successes and failures.  This metric now contains the `status` label with a value that is either `success` or `failure`. Deprecated the metrics `apiserver_encryption_config_controller_automatic_reload_success_total` and `apiserver_encryption_config_controller_automatic_reload_failure_total`. Please use `ap...