Monitoring/manifests/node-exporter/servicemonitor.yaml

apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: node-exporter
  namespace: monitoring
spec:
  selector:
    matchLabels:
      app.kubernetes.io/component: exporter
      app.kubernetes.io/name: node-exporter
  endpoints:
    - port: node-exporter
      path: /metrics
      relabelings:
      - sourceLabels: [__meta_kubernetes_pod_node_name]
        targetLabel: instance