istioctl experimental envoy-stats <pod-name[.namespace]> --output prom-merged

  # Retrieve Envoy cluster metrics
  istioctl experimental envoy-stats <pod-name[.namespace]> --type clusters
`,
		Aliases: []string{"es"},
		Args: func(cmd *cobra.Command, args []string) error {
			if len(args) != 1 && (labelSelector == "") {
				cmd.Println(cmd.UsageString())
				return fmt.Errorf("stats requires pod name or label selector")
			}