K8S 상의 Prometheus 와 Node-Exporter 연동

apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: node-exporter
  namespace: monitoring
spec:
  selector:
    matchLabels:
      app: node-exporter
  template:
    metadata:
      labels:
        app: node-exporter
    spec:
      containers:
      - name: node-exporter
        image: prom/node-exporter:latest
        ports:
        - containerPort: 9100
          hostPort: 9100
        resources:
          requests:
            memory: "50Mi"
            cpu: "100m"
---
apiVersion: v1
kind: Service
metadata:
  name: node-exporter
  namespace: monitoring
spec:
  selector:
    app: node-exporter
  ports:
  - name: metrics
    protocol: TCP
    port: 9100
    targetPort: 9100
  type: NodePort

scrape_configs:
  - job_name: 'node-exporter'
    kubernetes_sd_configs:
      - role: endpoints
    relabel_configs:
      - source_labels: [__meta_kubernetes_service_label_app]
        action: keep
        regex: node-exporter