pre-1.0 to 1.6 kubelet is not supported.
* Fluentd was migrated to Daemon Set, which targets nodes with
  beta.kubernetes.io/fluentd-ds-ready=true label. If you use fluentd in your
  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

message SELinuxOptions {
  // User is a SELinux user label that applies to the container.
  // +optional
  optional string user = 1;

  // Role is a SELinux role label that applies to the container.
  // +optional
  optional string role = 2;

  // Type is a SELinux type label that applies to the container.
  // +optional
  optional string type = 3;

    * Health check parameters are configurable to be bigger than default values.

  - ip-mask-agent addon starts to use the label `node.kubernetes.io/masq-agent-ds-ready` instead of `beta.kubernetes.io/masq-agent-ds-ready` as its node selector.
  - kube-proxy addon starts to use the label `node.kubernetes.io/kube-proxy-ds-ready` instead of `beta.kubernetes.io/kube-proxy-ds-ready` as its node selector.

  - The label reconciliation happens as part of periodic status update which can be configured via flag `--node-status-update-frequency` ([#104613](https://github.com/kubernetes/kubernetes/pull/104613),...

- '`metav1.LabelSelectors` specified in API objects are now validated to ensure
  they do not contain invalid label values that will error at time of use. Existing
  invalid objects can be updated, but new objects are required to contain valid
  label selectors.'
   ([#113699](https://github.com/kubernetes/kubernetes/pull/113699), [@liggitt](https://github.com/liggitt))

	out.Count = in.Count
	out.Type = in.Type
	out.EventTime = in.EventTime
	out.Series = (*core.EventSeries)(unsafe.Pointer(in.Series))
	out.Action = in.Action
	out.Related = (*core.ObjectReference)(unsafe.Pointer(in.Related))
	out.ReportingController = in.ReportingController
	out.ReportingInstance = in.ReportingInstance
	return nil
}

#### Extensibility

- The community has been asking for continuing support of extensibility, so this cycle features more work around CRDs and API Machinery. Most of the enhancements in this cycle were from SIG API Machinery and related areas.

	return common.OpenAPIDefinition{
		Schema: spec.Schema{
			SchemaProps: spec.SchemaProps{
				Description: "A label selector is a label query over a set of resources. The result of matchLabels and matchExpressions are ANDed. An empty label selector matches all objects. A null label selector matches no objects.",
				Type:        []string{"object"},
				Properties: map[string]spec.Schema{
					"matchLabels": {

  - Make "kubeadm upgrade apply" add the "node-role.kubernetes.io/control-plane" label on existing nodes that only have the "node-role.kubernetes.io/master" label during upgrade.
  - Please adapt your tooling built on top of kubeadm to use the "node-role.kubernetes.io/control-plane" label.