kubectl top node `error: metrics not available yet` . Using metrics-server as Heapster Depricated

Use official metrics server – https://github.com/kubernetes-sigs/metrics-server

If you use one master node, run this command to create the metrics-server:

kubectl apply -f https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml

If you have HA (High availability) cluster, use this:

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

Then use can use kubectl top nodes or kubectl top pods -A and get something like:

NAME          CPU(cores)   CPU%   MEMORY(bytes)   MEMORY%