apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: node-exporter
  namespace: kube-monitoring
  labels:
    app.kubernetes.io/name: node-exporter
spec:
  selector:
    matchLabels:
      app.kubernetes.io/name: node-exporter
  template:
    metadata:
      name: node-exporter
      labels:
        app.kubernetes.io/name: node-exporter
    spec:
      hostNetwork: true
      hostPID: true
      containers:
      - name: node-exporter
        image: prom/node-exporter
        args:
        - "--path.procfs=/host/proc"
        - "--path.sysfs=/host/sys"
        ports:
        - containerPort: 9100
          name: http-metrics
        resources:
          requests:
            memory: 20Mi
            cpu: 100m
          limits:
            memory: 50Mi
            cpu: 500m
        volumeMounts:
        - name: proc
          readOnly:  true
          mountPath: /host/proc
        - name: sys
          readOnly: true
          mountPath: /host/sys
      tolerations:
        - effect: NoSchedule
          operator: Exists
      volumes:
      - name: proc
        hostPath:
          path: /proc
      - name: sys
        hostPath:
          path: /sys
---
apiVersion: v1
kind: Service
metadata:
  name: nodes-exporter
  labels:
    app.kubernetes.io/name: node-exporter
spec:
  selector:
    app.kubernetes.io/name: node-exporter
  ports:
  - name: http-metrics
    port: 9100
    targetPort: http-metrics