pkg io/fs, type ReadFileFS interface, Open(string) (File, error)
pkg io/fs, type ReadFileFS interface, ReadFile(string) ([]uint8, error)
pkg io/fs, type StatFS interface { Open, Stat }
pkg io/fs, type StatFS interface, Open(string) (File, error)
pkg io/fs, type StatFS interface, Stat(string) (FileInfo, error)
pkg io/fs, type SubFS interface { Open, Sub }
pkg io/fs, type SubFS interface, Open(string) (File, error)

  // +optional
  optional NamespaceSpec spec = 2;

  // Status describes the current status of a Namespace.
  // More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#spec-and-status
  // +optional
  optional NamespaceStatus status = 3;
}

  - Added `allocatedResources` field to container status in pod status that describes the node resources allocated to a pod.
  - Added `resources` field to container status that reports actual resources applied to running containers.
  - Added `resize` field to pod status that describes the state of a requested pod resize.

### Bug or Regression

- Fix a scheduler preemption issue where the victim pod was not deleted due to incorrect status patching. This issue occurred when the preemptor and victim pods had different QoS classes in their status, causing the preemption to fail entirely. ([#126694](https://github.com/kubernetes/kubernetes/pull/126694), [@Huang-Wei](https://github.com/Huang-Wei)) [SIG Scheduling]

  - 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), [@ravisantoshgudimetla](https://github.com/ravisantoshgudimetla)) [SIG Node, Testing and Windows]

### Bug or Regression

- Fix a scheduler preemption issue where the victim pod was not deleted due to incorrect status patching. This issue occurred when the preemptor and victim pods had different QoS classes in their status, causing the preemption to fail entirely. ([#126693](https://github.com/kubernetes/kubernetes/pull/126693), [@Huang-Wei](https://github.com/Huang-Wei)) [SIG Scheduling]

- Reduce default NodeStatusReportFrequency to 5 minutes. With this change, periodic node status updates will be send every 5m if node status doesn't change (otherwise they are still send with 10s).

### **Application Autoscaling**
#### Horizontal Pod Autoscaler
* [alpha] [HPA Status Conditions](https://kubernetes.io/docs/tasks/run-application/horizontal-pod-autoscale-walkthrough/#appendix-horizontal-pod-autoscaler-status-conditions).


### **Cluster Lifecycle**
#### kubeadm

* Use Cluster Autoscaler 0.5.1, which fixes an issue in Cluster Autoscaler 0.5 where the cluster may be scaled up unnecessarily. Also the status of Cluster Autoscaler is now exposed in kube-system/cluster-autoscaler-status config map. ([#43745](https://github.com/kubernetes/kubernetes/pull/43745), [@mwielgus](https://github.com/mwielgus))



# v1.6.0

- Pod Log stats for windows now reports metrics ([#99221](https://github.com/kubernetes/kubernetes/pull/99221), [@jsturtevant](https://github.com/jsturtevant)) [SIG Node, Storage, Testing and Windows]