Metrics unavailable: install metrics-server

A banner above the table says:

The CPU and memory bars are empty and show a dash. On the Dashboard, the top consumer panels say Metrics unavailable.

Glauco reads usage from the metrics.k8s.io API. metrics-server provides it. Glauco shows the banner when the API is missing or not ready yet.

kubectl top nodes
kubectl get apiservice v1beta1.metrics.k8s.io

If kubectl top fails, the cluster has no working metrics-server. Most managed clusters (GKE, AKS, and EKS with the add-on) have one. Local clusters often do not.

Ask your cluster admin first. To install it yourself:

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

• minikube: minikube addons enable metrics-server.
• kind and other local clusters: metrics-server may need the --kubelet-insecure-tls argument.

Glauco asks for metrics every 10 seconds. The values show without a restart once metrics-server is ready.

On the Nodes screen, set CPU & Memory: to Requests or Limits. These come from the pod specs and work without metrics-server. See CPU and memory bars.