//
  // * Un-prefixed protocol names - reserved for IANA standard service names (as per
  // RFC-6335 and https://www.iana.org/assignments/service-names).
  //
  // * Kubernetes-defined prefixed names:
  //   * 'kubernetes.io/h2c' - HTTP/2 over cleartext as described in https://www.rfc-editor.org/rfc/rfc7540
  //
  // * Other protocols should use implementation-defined prefixed names such as
  // mycompany.com/my-custom-protocol.

struct {
	T1        // field name is T1
	*T2       // field name is T2
	P.T3      // field name is T3
	*P.T4     // field name is T4
	x, y int  // field names are x and y
}
</pre>

<p>
The following declaration is illegal because field names must be unique
in a struct type:
</p>

<pre>
struct {
	T     // conflicts with embedded field *T and *P.T

- The Pod API field `.spec.schedulingGates[*].name` now requires qualified names (like `example.com/mygate`), matching validation for names of `.spec.readinessGates[*].name`. Any uses of the alpha scheduling gate feature prior to 1.27 that do not match that validation must be renamed or deleted before upgrading to 1.27. ([#115821](https://github.com/kuberne...

- Fixed EndpointSlice port name validation to match Endpoint port name validation (allowing port names longer than 15 characters) ([#84481](https://github.com/kubernetes/kubernetes/pull/84481), [@robscott](https://github.com/robscott))

* Restores the pre-1.10 behavior of the openstack cloud provider which uses the instance name as the Kubernetes Node name. This requires instances be named with RFC-1123 compatible names. ([#63903](https://github.com/kubernetes/kubernetes/pull/63903), [@liggitt](https://github.com/liggitt))

- The names of ResourceClaims generated from ResourceClaimTemplate are now generated. The base name is still `<pod>-<claim name>`, but a random suffix will avoid name collisions. ([#117351](https://github.com/kubernetes/kubernetes/pull/117351), [@pohly](https://github.com/pohly)) [SIG API Machinery, Apps, Auth, Node, Scheduling and Testing]...

* The options passed to a flexvolume plugin's mount command now contains the pod name (`kubernetes.io/pod.name`), namespace (`kubernetes.io/pod.namespace`), uid (`kubernetes.io/pod.uid`), and service account name (`kubernetes.io/serviceAccount.name`). ([#39488](https://github.com/kubernetes/kubernetes/pull/39488), [@liggitt](https://github.com/liggitt))

*   DaemonSet status includes a new field named `conditions`, making it consistent with other workloads controllers. ([#55272](https://github.com/kubern...

### Feature

- ACTION REQUIRED : In CoreDNS v1.7.0, [metrics names have been changed](https://github.com/coredns/coredns/blob/master/notes/coredns-1.7.0.md#metric-changes) which will be backward incompatible with existing reporting formulas that use the old metrics' names. Adjust your formulas to the new names before upgrading. 
  
  Kubeadm now includes CoreDNS version v1.7.0. Some of the major changes include:

- Shell completion now knows to continue suggesting resource names when the command supports it.  For example `kubectl get pod pod1 <TAB>` will suggest more Pod names. ([#105711](https://github.com/kubernetes/kubernetes/pull/105711), [@marckhouzam](https://github.com/marckhouzam))