- HPA controller starts to expose metrics from the kube-controller-manager.\n- `reconciliations_total`: Number of reconciliation of HPA controller. \n- `reconciliation_duration_seconds`: The time(seconds) that the HPA controller takes to reconcile once. ([#116010](https://github.com/kubernetes/kubernetes/pull/116010), [@sanposhiho](https://github.com/sanposhiho))

      - [Storage](#storage)
    - [Cluster Federation](#cluster-federation)
      - [[alpha] Federated Jobs](#alpha-federated-jobs)
      - [[alpha] Federated Horizontal Pod Autoscaling (HPA)](#alpha-federated-horizontal-pod-autoscaling-hpa)
    - [Node Components](#node-components)
      - [Autoscaling and Metrics](#autoscaling-and-metrics)
        - [Cluster Autoscaler](#cluster-autoscaler)

- Added HPA support to pod-level resource specifications. When the pod-level resource feature was enabled, HPAs configured with `Resource` type metrics calculated the pod resources from `pod.Spec.Resources` field, if specified. ([#132430](https://github.com/ku...

* When HPAScaleToZero feature gate is enabled HPA supports scaling to zero pods based on object or external metrics. HPA remains active as long as at least one metric value available. ([#74526](https://github.com/kubernetes/kubernetes/pull/74526), [@DXist](https://github.com/DXist))
    * To downgrade the cluster to version that does not support scale-to-zero feature:

   ([#123492](https://github.com/kubernetes/kubernetes/pull/123492), [@carlory](https://github.com/carlory))
- Added metric name along with the utilization information when running `kubectl get hpa`. ([#122804](https://github.com/kubernetes/kubernetes/pull/122804), [@sreeram-venkitesh](https://github.com/sreeram-venkitesh))

- Client-go impersonation config can specify a UID to pass impersonated uid information through in requests. ([#104483](https://github.com/kubernetes/kubernetes/pull/104483), [@margocrawf](https://github.com/margocrawf))
- Create HPA v2 from v2beta2 with some fields changed. ([#102534](https://github.com/kubernetes/kubernetes/pull/102534), [@wangyysde](https://github.com/wangyysde)) [SIG API Machinery, Apps, Auth, Autoscaling and Testing]

- Increase default value of discovery cache TTL for kubectl to 6 hours. ([#107141](https://github.com/kubernetes/kubernetes/pull/107141), [@mk46](https://github.com/mk46))
- Introduce policy to allow the HPA to consume the `external.metrics.k8s.io` API group. ([#104244](https://github.com/kubernetes/kubernetes/pull/104244), [@dgrisonnet](https://github.com/dgrisonnet))

3370          ; mapped                 ; 0032 0034 70B9 #1.1  IDEOGRAPHIC TELEGRAPH SYMBOL FOR HOUR TWENTY-FOUR
3371          ; mapped                 ; 0068 0070 0061 #1.1  SQUARE HPA
3372          ; mapped                 ; 0064 0061     # 1.1  SQUARE DA
3373          ; mapped                 ; 0061 0075     # 1.1  SQUARE AU
3374          ; mapped                 ; 0062 0061 0072 #1.1  SQUARE BAR