04-01 04:51 阅读 176

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Prometheus 之 Kubernetes节点的监控

一、方法分析

• 每个节点都需要监控，因此可以使用DaemonSet类型来管理node_exporter

• 添加节点的容忍配置（因当前master节点设置了污点）

• 挂载宿主机中的系统文件信息（用以获取每个节点的主机的系统信息）

二、pod的yaml文件

apiVersion: apps/v1kind: DaemonSetmetadata:
  name: node-exporter  namespace: monitor  labels:
    app: node-exporterspec:
  selector:
    matchLabels:
      app: node-exporter  template:
    metadata:
      labels:
        app: node-exporter    spec:
      hostPID: true
      hostIPC: true
      hostNetwork: true
      nodeSelector:
        kubernetes.io/os: linux      containers:
      - name: node-exporter        image: prom/node-exporter:v1.0.1
        args:
        - --web.listen-address=$(HOSTIP):9100
        - --path.procfs=/host/proc
        - --path.sysfs=/host/sys
        - --path.rootfs=/host/root
        - --collector.filesystem.ignored-mount-points=^/(dev|proc|sys|var/lib/docker/.+)($|/)
        - --collector.filesystem.ignored-fs-types=^(autofs|binfmt_misc|cgroup|configfs|debugfs|devpts|devtmpfs|fusectl|hugetlbfs|mqueue|overlay|proc|procfs|pstore|rpc_pipefs|securityfs|sysfs|tracefs)$
        ports:
        - containerPort: 9100             对外暴露接口
        env:
        - name: HOSTIP
          valueFrom:
            fieldRef:
              fieldPath: status.hostIP
        resources:
          requests:
            cpu: 150m
            memory: 180Mi
          limits:
            cpu: 150m
            memory: 180Mi
        securityContext:
          runAsNonRoot: true
          runAsUser: 65534
        volumeMounts:
        - name: proc
          mountPath: /host/proc
        - name: sys
          mountPath: /host/sys
        - name: root
          mountPath: /host/root
          mountPropagation: HostToContainer
          readOnly: true
      tolerations:
      - operator: "Exists"       #设置亏点
      volumes:
      - name: proc
        hostPath:
          path: /proc
      - name: dev
        hostPath:
          path: /dev
      - name: sys
        hostPath:
          path: /sys
      - name: root
        hostPath:
          path: /

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