In K8s inorder to create the HPA we just need to give a below kubectl command like below: # kubectl autoscale deployment myapp --min=1 --max=4 --cpu-percent=80 But this will give a series of errors like below if metrics API is not registered. ######################################## ubuntu@namenode:~$ kubectl get hpa NAME REFERENCE TARGETS MINPODS MAXPODS REPLICAS AGE myapp Deployment/myapp < unknown> /80% 1 4 2 43h ubuntu@namenode:~$ kubectl describe horizontalpodautoscaler.autoscaling/myapp | grep Warning Warning FailedComputeMetricsReplicas 32m (x10333 over 43h) horizontal-pod-autoscaler invalid metrics (1 inva...