apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: node-exporter
  labels:
    app.kubernetes.io/name: node-exporter
spec:
  selector:
    matchLabels:
      app.kubernetes.io/name: node-exporter
  updateStrategy:
    type: RollingUpdate
  template:
    metadata:
      labels:
        app.kubernetes.io/name: node-exporter
    spec:
      automountServiceAccountToken: false
      hostNetwork: true
      hostPID: true
      tolerations:
        - operator: Exists
      containers:
        - name: node-exporter
          image: quay.io/prometheus/node-exporter:v1.9.1@sha256:d00a542e409ee618a4edc67da14dd48c5da66726bbd5537ab2af9c1dfc442c8a
          imagePullPolicy: IfNotPresent
          args:
            - --path.procfs=/host/proc
            - --path.sysfs=/host/sys
            - --path.rootfs=/host/root
            - --web.listen-address=[$(HOST_IP)]:9100
          env:
            - name: HOST_IP
              valueFrom:
                fieldRef:
                  fieldPath: status.hostIP
          ports:
            - name: metrics
              containerPort: 9100
              hostPort: 9100
          resources:
            requests:
              cpu: 20m
              memory: 32Mi
            limits:
              cpu: 200m
              memory: 128Mi
          securityContext:
            allowPrivilegeEscalation: false
            capabilities:
              drop: ["ALL"]
            readOnlyRootFilesystem: true
            runAsNonRoot: true
            runAsUser: 65534
          volumeMounts:
            - name: proc
              mountPath: /host/proc
              readOnly: true
            - name: sys
              mountPath: /host/sys
              readOnly: true
            - name: root
              mountPath: /host/root
              mountPropagation: HostToContainer
              readOnly: true
      securityContext:
        runAsNonRoot: true
        seccompProfile:
          type: RuntimeDefault
      volumes:
        - name: proc
          hostPath:
            path: /proc
        - name: sys
          hostPath:
            path: /sys
        - name: root
          hostPath:
            path: /
---
apiVersion: v1
kind: Service
metadata:
  name: node-exporter
  labels:
    app.kubernetes.io/name: node-exporter
spec:
  type: ClusterIP
  clusterIP: None
  selector:
    app.kubernetes.io/name: node-exporter
  ports:
    - name: metrics
      port: 9100
      targetPort: metrics