- Kubeadm: Added the `HTTPEndpoints` field to `ClusterConfiguration.Etcd.ExternalEtcd` to configure HTTP endpoints for etcd communication in v1beta4. This separates HTTP traffic (e.g., `/metrics`, `/health`) from gRPC traffic, improving access control. Mirrors etcd’s `--listen-client-http-urls` behavior; if not set, the `Endpoints` field handles...

has entered beta and is available by default. You can now [configure startup, liveness, and readiness probes](https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-startup-probes/#configure-probes) for your gRPC app
natively within Kubernetes, without exposing an HTTP endpoint or
using an extra executable.

* promote sourceRange into service spec ([#25826](https://github.com/kubernetes/kubernetes/pull/25826), [@freehan](https://github.com/freehan))
* kube-controller-manager: Add configure-cloud-routes option ([#25614](https://github.com/kubernetes/kubernetes/pull/25614), [@justinsb](https://github.com/justinsb))

* Set kernel.softlockup_panic =1 based on the flag. ([#38001](https://github.com/kubernetes/kubernetes/pull/38001), [@dchen1107](https://github.com/dchen1107))
* Configure local-up-cluster.sh to handle auth proxies ([#36838](https://github.com/kubernetes/kubernetes/pull/36838), [@deads2k](https://github.com/deads2k))

### Feature

- AWS cloudprovider supports auto-discovering subnets without any kubernetes.io/cluster/<clusterName> tags. It also supports additional service annotation service.beta.kubernetes.io/aws-load-balancer-subnets to manually configure the subnets. ([#97431](https://github.com/kubernetes/kubernetes/pull/97431), [@kishorj](https://github.com/kishorj)) [SIG Cloud Provider]

      MockResponse
        .Builder()
        .inTunnel()
        .body("bogus proxy connect response content")
        .build(),
    )
    server.enqueue(MockResponse(body = "response"))

    // Configure a single IP address for the host and a single configuration, so we only need one
    // failure to fail permanently.
    client =
      client
        .newBuilder()
        .sslSocketFactory(

- The deprecated flag `--lock-object-namespace` and `--lock-object-name` have been removed from kube-scheduler. Please use `--leader-elect-resource-namespace` and `--leader-elect-resource-name` or ComponentConfig instead to configure those parameters. ([#119130](https://github.com/kubernetes/kubernetes/pull/119130), [@SataQiu](https://github.com/SataQiu)) [SIG Scheduling]

All StorageClass parameters for volume provisioning and all features supported with PersistentVolumeClaims are supported.

### Skip Volume Ownership change graduates to GA

The feature to configure volume permission and ownership change policy for Pods moved to GA in 1.23.
This allows users to skip recursive permission changes on mount and speeds up the pod start up time.

* fix azure disk list corruption issue ([#77187](https://github.com/kubernetes/kubernetes/pull/77187), [@andyzhangx](https://github.com/andyzhangx))

### Ephemeral Containers Graduate to Stable