Merge pull request #32504 from kargakis/top-pod-fixes

Automatic merge from submit-queue

kubectl: run validation for 'top pod'

@mksalawa @kubernetes/kubectl

pkg/kubectl/cmd/top_node.go

@@ -122,6 +122,9 @@ func (o TopNodeOptions) RunTopNode() error {
 	if err != nil {
 		return err
 	}
+	if len(metrics) == 0 {
+		return errors.New("metrics not available yet")
+	}
 
 	var nodes []api.Node
 	if len(o.ResourceName) > 0 {