k8s 安裝node_exporter

基於控制器DaemonSet

apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: node-exporter-daemonset
spec:
  selector:
    matchLabels:
      app: prometheus
  template:
    metadata:
      labels:
        app: prometheus
    spec:
      hostNetwork: true
      containers:
      - name: node-exporter
        image: prom/node-exporter
        imagePullPolicy: IfNotPresent
        command:
        - /bin/node_exporter
        - --path.procfs
        - /host/proc
        - --path.sysfs
        - /host/sys
        - --collector.filesystem.ignored-mount-points
        - ^/(sys|proc|dev|host|etc)($|/)
        volumeMounts:
        - name: proc
          mountPath: /host/proc
        - name: sys
          mountPath: /host/sys
        - name: root
          mountPath: /rootfs
      volumes:
      - name: proc
        hostPath:
          path: /proc
      - name: sys
        hostPath:
          path: /sys
      - name: root
        hostPath:
          path: /

docker 安裝

docker run -d \
  -v "/proc:/host/proc" \
  -v "/sys:/host/sys" \
  -v "/:/rootfs" \
  --net=host \  prom/node-exporter \
  --path.procfs /host/proc \
  --path.sysfs /host/sys \
  --collector.filesystem.ignored-mount-points "^/(sys|proc|dev|host|etc)($|/)"