apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: node-exporter
  namespace: monitoring
  labels:
    app.kubernetes.io/name: node-exporter
spec:
  selector:
    matchLabels:
      app.kubernetes.io/name: node-exporter
  template:
    metadata:
      labels:
        app.kubernetes.io/name: node-exporter
      annotations:
        prometheus.io/scrape: "true"
        prometheus.io/port: "9100"
        prometheus.io/path: /metrics
    spec:
      hostNetwork: true
      hostPID: true
      tolerations:
        - operator: Exists
      containers:
        - name: node-exporter
          image: quay.io/prometheus/node-exporter:v1.8.2
          args:
            - --path.procfs=/host/proc
            - --path.sysfs=/host/sys
            - --path.rootfs=/host/root
            - --collector.filesystem.mount-points-exclude=^/(dev|proc|sys|var/lib/docker/.+|var/lib/kubelet/pods/.+)($|/)
            - --collector.filesystem.fs-types-exclude=^(autofs|binfmt_misc|bpf|cgroup2?|configfs|debugfs|devpts|devtmpfs|fusectl|hugetlbfs|iso9660|mqueue|nsfs|overlay|proc|procfs|pstore|rpc_pipefs|securityfs|selinuxfs|squashfs|sysfs|tracefs)$
            - --web.listen-address=0.0.0.0:9100
          ports:
            - name: metrics
              containerPort: 9100
              hostPort: 9100
              protocol: TCP
          resources:
            requests:
              cpu: 50m
              memory: 32Mi
            limits:
              memory: 128Mi
          securityContext:
            runAsNonRoot: true
            runAsUser: 65534
            allowPrivilegeEscalation: false
            readOnlyRootFilesystem: true
            capabilities:
              drop: ["ALL"]
          volumeMounts:
            - name: proc
              mountPath: /host/proc
              readOnly: true
            - name: sys
              mountPath: /host/sys
              readOnly: true
            - name: root
              mountPath: /host/root
              mountPropagation: HostToContainer
              readOnly: true
      volumes:
        - name: proc
          hostPath:
            path: /proc
        - name: sys
          hostPath:
            path: /sys
        - name: root
          hostPath:
            path: /