My metrics-server was sudden not working and got below information:

$ kubectl get apiservices |egrep metrics
v1beta1.metrics.k8s.io kube-system/metrics-server False (MissingEndpoints)

I tried to implement below but still not okay:

$ git clone https://github.com/kubernetes-incubator/metrics-server.git
$ cd metrics-server
$ kubectl apply -f deploy/1.8+/

Please advise, thanks.