apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  labels:
    app: nginx
  name: nginx
  namespace: monitoring
spec:
  endpoints:
  - interval: 30s
    port: prometheus
    relabelings:
    - action: replace
      regex: (.*)
      replacement: $1
      sourceLabels:
      - __meta_kubernetes_pod_node_name
      targetLabel: instance
    scheme: http
  jobLabel: nginx-exporter
  namespaceSelector:
    matchNames:
    - ingress-nginx
  selector:
    matchLabels:
      app.kubernetes.io/name: ingress-nginx