
https://github.com/kubernetes-sigs/metrics-server/blob/master/KNOWN_ISSUES.md


kubectl -nkube-system create configmap front-proxy-ca --from-file=front-proxy-ca.crt=/etc/kubernetes/pki/front-proxy-ca.crt -o yaml | kubectl -nkube-system replace configmap front-proxy-ca -f -



  - args:
        - --requestheader-client-ca-file=/ca/front-proxy-ca.crt // ADD THIS!
        - --cert-dir=/tmp
        - --secure-port=4443
        volumeMounts:
        - mountPath: /tmp
          name: tmp-dir
        - mountPath: /ca // ADD THIS!
          name: ca-dir

      volumes:
      - emptyDir: {}
        name: tmp-dir
      - configMap: // ADD THIS!
          defaultMode: 420
          name: front-proxy-ca
        name: ca-dir



--- 

https://github.com/kubernetes-sigs/metrics-server

High Availability
 
 kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/high-availability.yaml


so that requests sent to Metrics Server are load balanced between the 2 instances.
add to kube-apiserver.yaml

--enable-aggregator-routing=true 
