- Client-ca bundles for the all generic-apiserver based servers will dynamically reload from disk on content changes ([#83579](https://github.com/kubernetes/kubernetes/pull/83579), [@deads2k](https://github.com/deads2k))

* Bug fix: Clusters with GCE feature 'DiskAlphaAPI' enabled were unable to dynamically provision GCE PD volumes. ([#59447](https://github.com/kubernetes/kubernetes/pull/59447), [@verult](https://github.com/verult))



# v1.8.9

- Updated the feature MultiCIDRServiceAllocator to beta (disabled by default). Users need to enable the feature gate and the networking v1beta1 group to be able to use this new feature, that allows to dynamically reconfigure Service CIDR ranges. ([#125021](https://github.com/kubernetes/kubernetes/pull/125021), [@aojea](https://github.com/aojea)) [SIG API Machinery, Apps, CLI, Etcd, Instrumentation, Network and Testing]

* Allows extension API server to dynamically discover the requestheader CA certificate when the core API server doesn't use certificate based authentication for it's clients ([#66394](https://github.com/kubernetes/kubernetes/pull/66394), [@rtripat](https://github.com/rtripat))

- Fixed a bug that prevented deletion of dynamically provisioned volumes in Quobyte backends. ([#68925](https://github.com/kubernetes/kubernetes/pull/68925), [@casusbelli](https://github.com/casusbelli))

### Testing

- The extension API server can now dynamically discover the requestheader CA certificate when the core API server doesn't use certificate based authentication for it's clients. ([#66394](https://github.com/kubernetes/kubernetes/pull/66394), [@rtripat](https://github.com/rtripat))

  // persistentVolumeReclaimPolicy defines what happens to a persistent volume when released from its claim.
  // Valid options are Retain (default for manually created PersistentVolumes), Delete (default
  // for dynamically provisioned PersistentVolumes), and Recycle (deprecated).
  // Recycle must be supported by the volume plugin underlying this PersistentVolume.

During server startup, prior to the server reporting healthy (via `/healthz`), not all API groups may be reported.
Wait for the server to report healthy (via `/healthz`) before depending on the information provided by the discovery APIs.
Additionally, since the information returned from the discovery APIs may change dynamically, a cache of the results should not be considered authoritative.

- Expose `/debug/flags/v` to allow dynamically setting log level for kube-proxy. ([#98306](https://github.com/kubernetes/kubernetes/pull/98306), [@borgerli](https://github.com/borgerli)) [SIG Network]

* A smaller fix for the apiserver panic. ([#67552](https://github.com/kubernetes/kubernetes/pull/67552), [@wgliang](https://github.com/wgliang))
* Allows extension API server to dynamically discover the requestheader CA certificate when the core API server doesn't use certificate based authentication for it's clients ([#66394](https://github.com/kubernetes/kubernetes/pull/66394), [@rtripat](https://github.com/rtripat))