## Changes by Kind

### Bug or Regression

- An issues preventing volume expand controller to annotate the PVC with `volume.kubernetes.io/storage-resizer` when the PVC StorageClass is already updated to the out-of-tree provisioner is now fixed. ([#94489](https://github.com/kubernetes/kubernetes/pull/94489), [@ialidzhikov](https://github.com/ialidzhikov)) [SIG API Machinery, Apps and Storage]

[Documentation](https://docs.k8s.io) & [Examples](https://releases.k8s.io/release-1.6/examples)

## Known Issues for v1.6.5

* If you use the [GLBC Ingress Controller](https://github.com/kubernetes/ingress-nginx/tree/0.9.0-beta.1/controllers/gce),
  upgrading an existing pre-v1.6.4 cluster to Kubernetes v1.6.5 will cause an unintentional
  [overwrite of manual edits to GCP Health Checks](https://github.com/kubernetes/ingress/issues/842)

- Kubelet now tries to stop containers in unknown state once before restart or remove. ([#73802](https://github.com/kubernetes/kubernetes/pull/73802), [@Random-Liu](https://github.com/Random-Liu))

### SIG Openstack

The major theme for the SIG OpenStack release is the work-in-progress for removing the in-tree provider. This work, being done in conjunction with SIG Cloud Provider, is focusing on moving internal APIs that the OpenStack (and other providers) depends upon to staging to guarantee API stability. This work also included abstracting the in-tree Cinder API and refactoring code to the external Cinder provider to remove additional Cinder volume provider code.

	// to start, and allow all already-running pods to continue running.
	// Enforced by the scheduler.
	TaintEffectNoSchedule TaintEffect = "NoSchedule"
	// Like TaintEffectNoSchedule, but the scheduler tries not to schedule
	// new pods onto the node, rather than prohibiting new pods from scheduling
	// onto the node entirely. Enforced by the scheduler.
	TaintEffectPreferNoSchedule TaintEffect = "PreferNoSchedule"

// iteration support for a recursive tree data structure
type Tree[K cmp.Ordered, V any] struct {
	left, right *Tree[K, V]
	key         K
	value       V
}

func (t *Tree[K, V]) walk(yield func(key K, val V) bool) bool {
	return t == nil || t.left.walk(yield) && yield(t.key, t.value) && t.right.walk(yield)
}

func (t *Tree[K, V]) Walk(yield func(key K, val V) bool) {
	t.walk(yield)

## Changes by Kind

### Bug or Regression

- An issues preventing volume expand controller to annotate the PVC with `volume.kubernetes.io/storage-resizer` when the PVC StorageClass is already updated to the out-of-tree provisioner is now fixed. ([#94489](https://github.com/kubernetes/kubernetes/pull/94489), [@ialidzhikov](https://github.com/ialidzhikov)) [SIG API Machinery, Apps and Storage]

### Continued improvement of CSI

([#48848](https://github.com/kubernetes/kubernetes/issues/48848))

## **Deprecations**

### Cluster provisioning scripts
* cluster/ubuntu: Removed due to [deprecation](https://github.com/kubernetes/kubernetes/tree/master/cluster#cluster-configuration) and lack of maintenance. ([#44344](https://github.com/kubernetes/kubernetes/pull/44344), [@mikedanese](https://github.com/mikedanese))

  // reports this record in Assigned. Assigned only updates in the status after
  // the record has been checkpointed to disk. When the Kubelet is restarted,
  // it tries to make the Assigned config the Active config by loading and
  // validating the checkpointed payload identified by Assigned.
  // +optional
  optional NodeConfigSource assigned = 1;