apiVersion: apps/v1
kind: Deployment
metadata:
  name: prometheus-node-exporter
  namespace: prometheus
  labels:
    app: prometheus-node-exporter
spec:
  replicas: 2
  selector:
    matchLabels:
      app: prometheus-node-exporter
  template:
    metadata:
      labels:
        app: prometheus-node-exporter
      annotations:
        prometheus.io/scrape: "true"
        prometheus.io/path: '/metrics'
        prometheus.io/port: "9100"
    spec:
      hostNetwork: true
      hostPID: true
      hostIPC: true
      enableServiceLinks: false
      topologySpreadConstraints:
        - maxSkew: 1
          topologyKey: kubernetes.io/hostname
          whenUnsatisfiable: DoNotSchedule
          labelSelector:
            matchLabels:
              app: prometheus-node-exporter
      containers:
        - name: prometheus-node-exporter
          image: prom/node-exporter
          args:
            - "--path.rootfs=/root"
            - "--path.sysfs=/host/sys"
            - --collector.filesystem.ignored-mount-points=^/(dev|proc|sys|var/lib/docker/.+|var/lib/kubelet/pods/.+)($|/)
            - --collector.netclass.ignored-devices=^(veth.*)$
          ports:
            - containerPort: 9100
              protocol: TCP
          volumeMounts:
            - name: sys
              mountPath: /host/sys
              mountPropagation: HostToContainer
            - name: root
              mountPath: /root
              readOnly: true
              mountPropagation: HostToContainer
          securityContext:
            privileged: true
      volumes:
        - name: sys
          hostPath:
            path: /sys
        - name: root
          hostPath:
            path: /