apiVersion: apps/v1beta2
kind: DaemonSet
metadata:
  name: node-exporter
  namespace: monitoring
spec:
  updateStrategy:
    type: RollingUpdate
    rollingUpdate:
      maxUnavailable: 1
  selector:
    matchLabels:
      name: node-exporter
      phase: prod
  template:
    metadata:
      labels:
        name: node-exporter
        phase: prod
    spec:
      serviceAccountName: node-exporter
      securityContext:
        runAsNonRoot: true
        runAsUser: 65534
      hostNetwork: true
      hostPID: true
      containers:
      - name: node-exporter
        image: quay.io/prometheus/node-exporter:v0.15.2
        args:
          - "--path.procfs=/host/proc"
          - "--path.sysfs=/host/sys"
        ports:
          - name: metrics
            containerPort: 9100
            hostPort: 9100
        resources:
          requests:
            memory: 30Mi
            cpu: 100m
          limits:
            memory: 50Mi
            cpu: 200m
        volumeMounts:
          - name: proc
            mountPath: /host/proc
            readOnly:  true
          - name: sys
            mountPath: /host/sys
            readOnly: true
      tolerations:
        - effect: NoSchedule
          operator: Exists
      volumes:
        - name: proc
          hostPath:
            path: /proc
        - name: sys
          hostPath:
            path: /sys