Kubernetes HPA on AKS is failing with error 'missing request for cpu'

resources appears twice in your pod spec.

        resources:         # once here          requests:            cpu: 250m          limits:            cpu: 500m                    ports:        - containerPort: 80        resources: {}      # another here, clearing it

This is typically related to the metrics server.

Make sure you are not seeing anything unusual about the metrics server installation:

# This should show you metrics (they come from the metrics server)$ kubectl top pods$ kubectl top nodes

or check the logs:

$ kubectl logs <metrics-server-pod>

Also, check your kube-controller-manager logs for HPA events related entries.

Furthermore, if you'd like to explore more on whether your pods have missing requests/limits you can simply see the full output of your running pod managed by the HPA:

$ kubectl get pod <pod-name> -o=yaml

Some other people have had luck deleting and renaming the HPA too.

I was able to resolve the issue by changing the following in my kubernetes manifest file from this:

resources:          requests:            cpu: 250m          limits:            cpu: 500m 

to the following:

resources:          requests:            cpu: "250m"          limits:            cpu: "500m" 

HPA worked after that. Following is the GitHub link which gave the solution:https://github.com/kubernetes-sigs/metrics-server/issues/237But I did not add any Internal IP address command or anything else.