### API Priority and Fairness graduates to Beta

Initially introduced in 1.18, Kubernetes 1.20 now enables API Priority and Fairness (APF) by default. This allows `kube-apiserver` to [categorize incoming requests by priority levels](https://docs.k8s.io/concepts/cluster-administration/flow-control/).

### IPv4/IPv6 run

    * Default value for expendable pod priority cutoff in GCP deployment of Cluster Autoscaler changed from 0 to -10.
    * action required: users deploying workloads with priority lower than 0 may want to use priority lower than -10 to avoid triggering scale-up.

minioConsolePort: "9001" ## Update strategy for Deployments DeploymentUpdate: type: RollingUpdate maxUnavailable: 0 maxSurge: 100% ## Update strategy for StatefulSets StatefulSetUpdate: updateStrategy: RollingUpdate ## Pod priority settings ## ref: https://kubernetes.io/docs/concepts/configuration/pod-priority-preemption/ ## priorityClassName: "" ## Set default rootUser, rootPassword ## AccessKey and secretKey is generated when not set ## Distributed MinIO ref: https://docs.minio.io/docs/distributed-minio-quickstart-guide...

#### Scheduling

* [alpha] This version now supports pod priority and creation of PriorityClasses ([user doc](https://kubernetes.io/docs/concepts/configuration/pod-priority-preemption/))([design doc](https://github.com/kubernetes/community/blob/master/contributors/design-proposals/scheduling/pod-priority-api.md))

    frame.writeByte(255) // Heaviest weight, zero-indexed.
    frame.writeAll(headerBytes)
    reader.nextFrame(
      requireSettings = false,
      object : BaseTestHandler() {
        override fun priority(
          streamId: Int,
          streamDependency: Int,
          weight: Int,
          exclusive: Boolean,
        ) {
          assertThat(streamDependency).isEqualTo(0)

* Priority admission controller picks a global default with the lowest priority value if more than one such default PriorityClass exists. ([#59991](https://github.com/kubernetes/kubernetes/pull/59991), [@bsalamat](https://github.com/bsalamat))

minioConsolePort: "9001" ## Update strategy for Deployments DeploymentUpdate: type: RollingUpdate maxUnavailable: 0 maxSurge: 100% ## Update strategy for StatefulSets StatefulSetUpdate: updateStrategy: RollingUpdate ## Pod priority settings ## ref: https://kubernetes.io/docs/concepts/configuration/pod-priority-preemption/ ## priorityClassName: "" ## Set default rootUser, rootPassword ## AccessKey and secretKey is generated when not set ## Distributed MinIO ref: https://docs.minio.io/docs/distributed-minio-quickstart-guide...

minioConsolePort: "9001" ## Update strategy for Deployments DeploymentUpdate: type: RollingUpdate maxUnavailable: 0 maxSurge: 100% ## Update strategy for StatefulSets StatefulSetUpdate: updateStrategy: RollingUpdate ## Pod priority settings ## ref: https://kubernetes.io/docs/concepts/configuration/pod-priority-preemption/ ## priorityClassName: "" ## Set default rootUser, rootPassword ## AccessKey and secretKey is generated when not set ## Distributed MinIO ref: https://docs.minio.io/docs/distributed-minio-quickstart-guide...

minioConsolePort: "9001" ## Update strategy for Deployments DeploymentUpdate: type: RollingUpdate maxUnavailable: 0 maxSurge: 100% ## Update strategy for StatefulSets StatefulSetUpdate: updateStrategy: RollingUpdate ## Pod priority settings ## ref: https://kubernetes.io/docs/concepts/configuration/pod-priority-preemption/ ## priorityClassName: "" ## Set default rootUser, rootPassword ## AccessKey and secretKey is generated when not set ## Distributed MinIO ref: https://docs.minio.io/docs/distributed-minio-quickstart-guide...

minioConsolePort: "9001" ## Update strategy for Deployments DeploymentUpdate: type: RollingUpdate maxUnavailable: 0 maxSurge: 100% ## Update strategy for StatefulSets StatefulSetUpdate: updateStrategy: RollingUpdate ## Pod priority settings ## ref: https://kubernetes.io/docs/concepts/configuration/pod-priority-preemption/ ## priorityClassName: "" ## Set default rootUser, rootPassword ## AccessKey and secretKey is generated when not set ## Distributed MinIO ref: https://docs.minio.io/docs/distributed-minio-quickstart-guide...