- Kubelet now exposes `/debug/flags/v` to allow dynamically setting glog logging level.  For example, to change glog level to 3, you only have to send a PUT request like `curl -X PUT http://127.0.0.1:8080/debug/flags/v -d "3"`. ([#64601](https://github.com/kubernetes/kubernetes/pull/64601), [@hzxuzhonghu](https://github.com/hzxuzhonghu))

### SIG OpenStack

* Exposed `/debug/flags/v` to allow dynamically set glog logging level.  For example, to change glog level to 3, send a PUT request such as `curl -X PUT http://127.0.0.1:8080/debug/flags/v -d "3"`. ([#63777](https://github.com/kubernetes/kubernetes/pull/63777), [@hzxuzhonghu](https://github.com/hzxuzhonghu))

- Kubeadm: make sure that `kubeadm init/join` always use a URL scheme (unix:// on Linux and npipe:// on Windows) when passing a value to the `--container-runtime-endpoint` kubelet flag. This flag's value is taken from the kubeadm configuration `criSocket` field or the `--cri-socket` CLI flag. Automatically add a missing URL scheme to the user configuration in memory, but warn them that they should also update their configuration on disk manually....

    url = ""
    content_type_level = "0"
    if override1:
        url += "/level1"
        content_type_level = "1"
    if override2:
        url += "/level2"
        content_type_level = "2"
    if override3:
        url += "/override3"
        content_type_level = "3"
    else:
        url += "/default3"
    url += "?level3=foo"
    response = client.get(url)

    /** The key of the configuration. e.g. expires */
    String INDEX_FIELD_EXPIRES = "index.field.expires";

    /** The key of the configuration. e.g. url */
    String INDEX_FIELD_URL = "index.field.url";

    /** The key of the configuration. e.g. doc_id */
    String INDEX_FIELD_doc_id = "index.field.doc_id";

    /** The key of the configuration. e.g. _id */

*   It is now possible to set multiple manifest URL headers with the kubelet's `--manifest-url-header` flag. Multiple headers for the same key will be added in the order provided. The ManifestURLHeader field in KubeletConfiguration object (kubeletconfig/v1alpha1) is now a map[string][]string, which facilitates writing JSON...

* 🔧 Update sponsors: add Fine. PR [#11784](https://github.com/tiangolo/fastapi/pull/11784) by [@tiangolo](https://github.com/tiangolo).
* 🔧 Tweak sponsors: Kong URL. PR [#11765](https://github.com/tiangolo/fastapi/pull/11765) by [@tiangolo](https://github.com/tiangolo).
* 🔧 Tweak sponsors: Kong URL. PR [#11764](https://github.com/tiangolo/fastapi/pull/11764) by [@tiangolo](https://github.com/tiangolo).

- Kubeadm: external etcd endpoints passed in the `ClusterConfiguration` that have Unicode characters are no longer IDNA encoded (converted to Punycode). They are now just URL encoded as per Go's implementation of RFC-3986, have duplicate "/" removed from the URL paths, and passed like that directly to the `kube-apiserver` `--etcd-servers` flag. If you have etcd endpoints that have Unicode characters, it is advisable to encode them in advance with tooling that is fully...

  * Implement `kubectl get controllerrevisions` ([#46655](https://github.com/kubernetes/kubernetes/pull/46655), [@janetkuo](https://github.com/janetkuo))

  * `kubectl create clusterrole` supports `--non-resource-url` ([#45809](https://github.com/kubernetes/kubernetes/pull/45809), [@CaoShuFeng](https://github.com/CaoShuFeng))

### Feature

- API request throttling (due to a high rate of requests) is now reported in client-go logs at log level 2.  The messages are of the form:`Throttling request took 1.50705208s, request: GET:<URL>` The presence of these messages may indicate to the administrator the need to tune the cluster accordingly. ([#87740](https://github.com/kubernetes/kubernetes/pull/87740), [@jennybuckley](https://github.com/jennybuckley)) [SIG API Machinery]