kubectl get --raw '/apis/custom.metrics.k8s.io/v1beta1/namespaces/default/pods/*/app_request_count_per_second'| jq

{
  "kind": "MetricValueList",
  "apiVersion": "custom.metrics.k8s.io/v1beta1",
  "metadata": {},
  "items": [
    {
      "describedObject": {
        "kind": "Pod",
        "namespace": "default",
        "name": "hello-pod",
        "apiVersion": "/v1"
      },
      "metricName": "app_request_count_per_second",
      "timestamp": "2024-05-29T08:38:20Z",
      "value": "5914m",
      "selector": null
    }
  ]
}

this is ready for custom.metrics.k8s.io api. And this is my hpa.yaml

cat hpa.yaml 
apiVersion: autoscaling/v2
kind: HorizontalPodAutoscaler
metadata:
  name: hello-hpa 
  namespace: prometheus
spec:
  minReplicas: 1
  maxReplicas: 3
  scaleTargetRef:
    apiVersion: apps/v1
    kind: Deployment
    name: hello-pod
  metrics:
  - type: Pods
    pods:
      metric:
        name: app_request_count_per_second
      target:
        type: AverageValue
        averageValue: 4

but I get this error in hpa describe. “FailedGetPodsMetric the HPA was unable to compute the replica count: unable to get metric app_request_count_per_second: no metrics returned from custom metrics API”

Events:
“Warning FailedComputeMetricsReplicas 26m (x12 over 29m) horizontal-pod-autoscaler invalid metrics (1 invalid out of 1), first error is: failed to get pods metric value: unable to get metric app_request_count_per_second: no metrics returned from custom metrics API
Warning FailedGetPodsMetric 3m55s (x101 over 29m) horizontal-pod-autoscaler unable to get metric app_request_count_per_second: no metrics returned from custom metrics API”