apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: node-exporter
  namespace: {{ taskserv.namespace }}
  labels:
    app: node-exporter
    app.kubernetes.io/managed-by: provisioning
spec:
  selector:
    matchLabels:
      app: node-exporter
  updateStrategy:
    type: RollingUpdate
    rollingUpdate:
      maxUnavailable: 1
  template:
    metadata:
      labels:
        app: node-exporter
        app.kubernetes.io/managed-by: provisioning
    spec:
      serviceAccountName: node-exporter
      hostPID: true
      hostNetwork: {{ taskserv.params.host_network | default(value=false) }}
      {% if taskserv.params.host_network | default(value=false) %}dnsPolicy: ClusterFirstWithHostNet{% endif %}
      tolerations:
        - key: node-role.kubernetes.io/control-plane
          operator: Exists
          effect: NoSchedule
      securityContext:
        runAsNonRoot: true
        runAsUser: 65534
      containers:
        - name: node-exporter
          image: {{ taskserv.image }}
          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/.+)($$|/)
            - --web.listen-address=:{{ taskserv.provides.port | default(value=9100) }}
          ports:
            - containerPort: {{ taskserv.provides.port | default(value=9100) }}
              name: metrics
          volumeMounts:
            - name: proc
              mountPath: /host/proc
              readOnly: true
            - name: sys
              mountPath: /host/sys
              readOnly: true
            - name: root
              mountPath: /host/root
              mountPropagation: HostToContainer
              readOnly: true
          readinessProbe:
            httpGet:
              path: /
              port: {{ taskserv.provides.port | default(value=9100) }}
            initialDelaySeconds: 5
            periodSeconds: 10
          livenessProbe:
            httpGet:
              path: /
              port: {{ taskserv.provides.port | default(value=9100) }}
            initialDelaySeconds: 15
            periodSeconds: 15
            failureThreshold: 3
          resources:
            requests:
              cpu: 50m
              memory: 50Mi
            limits:
              cpu: 250m
              memory: 128Mi
      volumes:
        - name: proc
          hostPath:
            path: /proc
        - name: sys
          hostPath:
            path: /sys
        - name: root
          hostPath:
            path: /