- Node Problem Detector is now available for GCE Windows nodes. ([#101539](https://github.com/kubernetes/kubernetes/pull/101539), [@jeremyje](https://github.com/jeremyje)) [SIG Cloud Provider, Node and Windows]

    // Set up the server to ignore the socket. It won't respond to pings!
    server.enqueue(MockResponse.Builder().onRequestStart(Stall).build())

    // Make a call. It'll fail as soon as our pings detect a problem.
    val call = client.newCall(Request(server.url("/")))
    val executeAtNanos = System.nanoTime()
    assertFailsWith<StreamResetException> {
      call.execute()
    }.also { expected ->

    * Logging Agent Improvements
    * Bump logging agent version to 0.2-1.5.33-1-k8s-1.
    * Appropriately set log severity for k8s_container.
    * Fix detect exceptions plugin to analyze message field instead of log field.
    * Fix detect exceptions plugin to analyze streams based on local resource id.
    * Disable the metadata agent for monitored resource construction in logging.

### Apps

- Users can now specify a DataSource/Kind of type `PersistentVolumeClaim` in their PVC spec.  This can then be detected by the external csi-provisioner and plugins if capable. ([#76913](https://github.com/kubernetes/kubernetes/pull/76913), [@j-griffith](https://github.com/j-griffith))

- On compatible systems, a mounter's Unmount implementation is changed to not return an error when the specified target can be detected as not a mount point. On Linux, the behavior of detecting a mount point depends on `umount` command is validated when the mounter is created. Additionally, mount point checks will be skipped in CleanupMountPoint/CleanupMountWithForce if the mounter's...

- Kube-proxy, will restart in case it detects that the Node assigned pod.Spec.PodCIDRs have changed ([#113258](https://github.com/kubernetes/kubernetes/pull/113258), [@code-elinka](https://github.com/code-elinka)) [SIG Network]

  1. If you experienced problems with Services not syncing to iptables correctly, you can disable the feature by passing `--feature-gates=MinimizeIPTablesRestore=false` to kube-proxy (and file a bug if this fixes it). (This might also be detected by seeing the value of kube-proxy's `sync_proxy_rules_iptables_partial_restore_failures_total` metric rising.)

    * [fluentd-gcp addon] Bump prometheus-to-sd to v0.5.0 to pick up security fixes.
    * [metatada-proxy addon] Bump prometheus-to-sd v0.5.0 to pick up security fixes.
* Node-Problem-Detector configuration is now decoupled from the Kubernetes release on GKE/GCE. ([#73288](https://github.com/kubernetes/kubernetes/pull/73288), [@wangzhen127](https://github.com/wangzhen127))

Promoted the `ServerSideFieldValidation` feature gate to beta (on by default). This allows optionally triggering schema validation on the API server that errors when unknown fields are detected. This allows the removal of client-side validation from kubectl while maintaining the same core functionality of erroring out on requests that contain unknown or invalid fields.


###  Introduced KMS v2

- Node-Problem-Detector v0.7.1 is used on GCI ([#80726](https://github.com/kubernetes/kubernetes/pull/80726), [@wangzhen127](https://github.com/wangzhen127))
- Node-Problem-Detector v0.7.1 is used for addon daemonset. ([#82140](https://github.com/kubernetes/kubernetes/pull/82140), [@wangzhen127](https://github.com/wangzhen127))