* After a kubelet rotates its client cert, it now closes its connections to the API server to force a handshake using the new cert. Previously, the kubelet could keep its existing connection open, even if the cert used for that connection was expired and rejected by the API server. ([#49899](https://github.com/kubernetes/kubernetes/pull/49899), [@ericchiang](https://github.com/ericchiang))

*   Load Balancer (Octavia) V2 is now supported, in addition to Neutron LBaaS V2.
*   Neutron LBaas V1 support has been removed.

This work enables Kubernetes to take full advantage of the relevant services as exposed by OpenStack clouds. Refer to the [Cloud Providers](https://kubernetes.io/docs/concepts/cluster-administration/cloud-providers/#openstack) documentation for more information.

### Storage

- Fixes a regression exposed in 1.27 by kubectl switching to openapi v3 by making apiregistration.k8s.io discoverable in openapi/v3 ([#119841](https://github.com/kubernetes/kubernetes/pull/119841), [@atiratree](https://github.com/atiratree)) [SIG API Machinery]

- Kube-proxy: delete stale conntrack UDP entries for loadbalancer ingress IP. ([#104151](https://github.com/kubernetes/kubernetes/pull/104151), [@aojea](https://github.com/aojea)) [SIG Network]
- Metrics changes: Fix exposed buckets of `scheduler_volume_scheduling_duration_seconds_bucket` metric ([#100720](https://github.com/kubernetes/kubernetes/pull/100720), [@dntosas](https://github.com/dntosas)) [SIG Apps, Instrumentation, Scheduling and Storage]

* Kubelet will set extended resource capacity to zero after it restarts. If the extended resource is exported by a device plugin, its capacity will change to a valid value after the device plugin re-connects with the Kubelet. If the extended resource is exported by an external component through direct node status capacity patching, the component should repatch the field after kubelet becomes ready again. During the time gap, pods...

- Exposed `rest.DefaultServerUrlFor` function. ([#118055](https://github.com/kubernetes/kubernetes/pull/118055), [@timofurrer](https://github.com/timofurrer))

- The DynamicKubeletConfig and SelfHosting functionality was moved outside of `kubeadm init` and feature gates and is now exposed under `kubeadm alpha`.
- Kubeadm init phase certs now support the `--csr-only` option, simplifying custom CA creation.

- Kube-apiserver now deletes expired kube-apiserver Lease objects:
  - The feature is under feature gate `APIServerIdentity`.

- Azure auth module for kubectl now requests login after refresh token expires. ([#86481](https://github.com/kubernetes/kubernetes/pull/86481), [@tdihp](https://github.com/tdihp)) [SIG API Machinery and Auth]

- Fixed an issue blocking azure auth to prompt to device code authentication flow when refresh token expires. ([#102063](https://github.com/kubernetes/kubernetes/pull/102063), [@tdihp](https://github.com/tdihp))