apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: istiod-gloo
  namespace: istio-system
spec:
  selector:
    matchLabels:
      app: istiod
      istio.io/rev: gloo
  endpoints:
  - port: http-monitoring   # port 15014
    interval: 15s
    path: /metrics