- [<code>kubectl debug</code> graduates to Beta](#kubectl-debug-graduates-to-beta)
    - [Removing deprecated flags in kubeadm](#removing-deprecated-flags-in-kubeadm)
    - [Pod Hostname as FQDN graduates to Beta](#pod-hostname-as-fqdn-graduates-to-beta)
    - [<code>TokenRequest</code> / <code>TokenRequestProjection</code> graduates to General Availability](#tokenrequest--tokenrequestprojection-graduates-to-general-availability)

- Automatically copy `topology.k8s.io/zone`, `topology.k8s.io/region` and `kubernetes.io/hostname` labels from Node objects to Pods when they are scheduled to a node (via the `pods/binding` endpoint) to allow applications that need to be explicitly aware of their assigned node topology to access this information via the downward API, rather than...

- Allowed setting the `hostnameOverride` field in `PodSpec` to specify any RFC 1123 DNS subdomain as the pod's hostname. The `HostnameOverride` feature gate was introduced to control enablement of this functionality. ([#132558](https://github.com/kubernetes/kubernetes/pull/132558), [@HirazawaUi](https://github.com/HirazawaUi)) [SIG API Machinery, Apps, Network, Node...

- kubelet: change `node-lease-renew-interval` to 0.25 of lease-renew-duration ([#80429](https://github.com/kubernetes/kubernetes/pull/80429), [@gaorong](https://github.com/gaorong))
- Attempt to set the kubelet's hostname & internal IP if `--cloud-provider=external` and no node addresses exists ([#75229](https://github.com/kubernetes/kubernetes/pull/75229), [@andrewsykim](https://github.com/andrewsykim))

### Scheduling

- Node Problem Detector is now available for GCE Windows nodes. ([#101539](http...

## Changelog since v1.8.1

### Other notable changes

* Allow for configuring etcd hostname in the manifest ([#54403](https://github.com/kubernetes/kubernetes/pull/54403), [@wojtek-t](https://github.com/wojtek-t))

pkg os, func Getgroups() ([]int, error)
pkg os, func Getpagesize() int
pkg os, func Getpid() int
pkg os, func Getppid() int
pkg os, func Getuid() int
pkg os, func Getwd() (string, error)
pkg os, func Hostname() (string, error)
pkg os, func IsExist(error) bool
pkg os, func IsNotExist(error) bool
pkg os, func IsPathSeparator(uint8) bool
pkg os, func IsPermission(error) bool
pkg os, func Lchown(string, int, int) error