4.MD

k config  use-context cluster1-admin@cluster1

# vim 4.yaml

apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: app
  namespace: prod
spec:
  selector:
    matchLabels:
      app: app
  endpoints:
  - port: metrics
    path: /metrics

k apply -f 4.yaml