</p>

<p>
By construction, an interface's type set never contains an interface type.
</p>

<pre>
// An interface representing only the type int.
interface {
	int
}

// An interface representing all types with underlying type int.
interface {
	~int
}

// An interface representing all types with underlying type int that implement the String method.

  optional SecretKeySelector secretKeyRef = 4;
}

// An EphemeralContainer is a temporary container that you may add to an existing Pod for
// user-initiated activities such as debugging. Ephemeral containers have no resource or
// scheduling guarantees, and they will not be restarted when they exit or when a Pod is
// removed or restarted. The kubelet may evict a Pod if an ephemeral container causes the
// Pod to exceed its resource allocation.

* The `--node-name` flag for kubeadm now dictates the Node API object name the kubelet uses for registration, in all cases but where you might use an in-tree cloud provider. If you're not using an in-tree cloud provider, `--node-name` will set the Node API object name. If you're using an in-tree cloud provider, you MUST make `--node-name` match the name the in-tree cloud provider decides to use.

* Fixed binding of block PersistentVolumes / PersistentVolumeClaims when BlockVolume feature is off. ([#84049](https://github.com/kubernetes/kubernetes/pull/84049), [@jsafrane](https://github.com/jsafrane))

the server (`Table`) or fetching just the `ObjectMeta` for an object (as `PartialObjectMetadata`) are now beta as part of `meta.k8s.io/v1beta1`.  Clients may request alternate representations of normal Kubernetes objects by passing an `Accept` header like `application/json;as=Table;g=meta.k8s.io;v=v1beta1` or `application/json;as=PartialObjectMetadata;g=meta.k8s.io;v1=v1beta1`.  Older servers will ignore this representation or return an error if it is not available.  Clients may request fallback...

For more information, see [#53109](https://github.com/kubernetes/kubernetes/issues/53109).

## Deprecations

- Fixed an error when trying to expand a volume that does not require node expansion. ([#123055](https://github.com/kubernetes/kubernetes/pull/123055), [@gnufied](https://github.com/gnufied))
- Fixed an issue calculating total CPU usage reported for Windows nodes. ([#122999](https://github.com/kubernetes/kubernetes/pull/122999), [@marosset](https://github.com/marosset))

- The default delegating authorization options now allow unauthenticated access to healthz, readyz, and livez.  A system:masters user connecting to an authz delegator will not perform an authz check. ([#98325](https://github.com/kubernetes/kubernetes/pull/98325), ...

- Fixed an issue related to not draining all the pods in a namespace when an empty selector, i.e., "{}," is specified in a Pod Disruption Budget (PDB). ([#119732](https://github.com/kubernetes/kubernetes/pull/119732), [@sairameshv](https://github.com/sairameshv))

*   Fixed an issue where an Azure PersistentVolume object would crash because the value of `volumeSource.ReadOnly` was set to nil. ([#54607](https://github.com/kubernetes/kubernetes/pull/54607),[ @andyzhangx](https://github.com/andyzhangx))