// +optional
  optional ContainerStateWaiting waiting = 1;

  // Details about a running container
  // +optional
  optional ContainerStateRunning running = 2;

  // Details about a terminated container
  // +optional
  optional ContainerStateTerminated terminated = 3;
}

// ContainerStateRunning is a running state of a container.
message ContainerStateRunning {

- Kubelet metrics gathered through metrics-server or prometheus should no longer timeout for Windows nodes running more than 3 pods. ([#87730](https://github.com/kubernetes/kubernetes/pull/87730), [@marosset](https://github.com/marosset)) [SIG Node, Testing and Windows]

  cluster please make sure that the nodes with version 1.6+ contains this
  label.

### kubectl
* Running `kubectl taint` (alpha in 1.5) against a 1.6 server requires upgrading kubectl to version 1.6
* Running `kubectl taint` (alpha in 1.5) against a 1.5 server requires a kubectl version of 1.5
* Running `kubectl create secret` no longer accepts passing multiple values to a single --from-literal flag using comma separation

* kubectl port-forward now allows using resource name (e.g., deployment/www) to select a matching pod, as well as the use of --pod-running-timeout to wait until at least one pod is running. ([#59705](https://github.com/kubernetes/kubernetes/pull/59705), [@phsiao](https://github.com/phsiao))

		* Restored the ability of kubectl running inside a pod to consume resource files specifying a different namespace than the one the pod is running in. ([#44862](https://github.com/kubernetes/kubernetes/pull/44862), [@liggitt](https://github.com/liggitt))

    * [metatada-proxy addon] Bump prometheus-to-sd v0.5.0 to pick up security fixes.

* kubeadm: print required flags when running kubeadm upgrade plan ([#65802](https://github.com/kubernetes/kubernetes/pull/65802), [@xlgao-zju](https://github.com/xlgao-zju))
* Fix `RunAsGroup` which doesn't work since 1.10. ([#65926](https://github.com/kubernetes/kubernetes/pull/65926), [@Random-Liu](https://github.com/Random-Liu))

- `kubectl exec` now allows using the resource name to select a matching pod and `--pod-running-timeout` flag to wait till at least one pod is running. ([#73664](https://github.com/kubernetes/kubernetes/pull/73664), [@prksu](https://github.com/prksu))

- Adds feature gate `KubeletInUserNamespace` which enables support for running kubelet in a user namespace.
  
  The user namespace has to be created before running kubelet.
  All the node components such as CRI need to be running in the same user namespace.
  

- Fixed port-forward memory leak for long-running and heavily used connections. ([#99839](https://github.com/kubernetes/kubernetes/pull/99839), [@saschagrunert](https://github.com/saschagrunert)) [SIG API Machinery and Node]