K8S中Prometheus使用serviceMoniter监控blackbox-exporter

使用Prometheus原生yaml配置blackbox-exporter的教程遍地都是，使用serviceMonitor进行配置的却比较少，为了让大家少踩坑，现将完整配置贴下，一贴搞定！

首先配置configmap

apiVersion: v1
kind: ConfigMap
metadata:
  name: blackbox-exporter
  namespace: product-coc-monitor
  labels:
    app: blackbox-exporter
data:
  blackbox.yml: |-
    modules:
      http_2xx:
        prober: http
        timeout: 2s
        http:
          valid_http_versions: ["HTTP/1.1", "HTTP/2"]
          valid_status_codes: [200,301,302]
          method: GET
          preferred_ip_protocol: "ip4"
      tcp_connect:
        prober: tcp
        timeout: 2s

配置ingress

apiVersion: extensions/v1beta1
kind: Ingress
metadata:
  name: blackbox-exporter
  namespace: kube-system
status:
  loadBalancer:
    ingress:
      - ip: 自动生成的ip
spec:
  rules:
    - host: blackbox.od.com
      http:
        paths:
          - path: /
            pathType: ImplementationSpecific
            backend:
              serviceName: blackbox-exporter
              servicePort: blackbox-port

配置deployment

apiVersion: apps/v1
kind: Deployment
metadata:
  name: blackbox-exporter
  namespace: product-coc-monitor
  labels:
    app: blackbox-exporter
spec:
  replicas: 1
  selector:
    matchLabels:
      app: blackbox-exporter
  template:
    metadata:
      creationTimestamp: null
      labels:
        app: blackbox-exporter
      annotations:
        kubectl.kubernetes.io/restartedAt: '2022-06-28T04:26:04Z'
    spec:
      volumes:
        - name: config
          configMap:
            name: blackbox-exporter
            defaultMode: 420
      containers:
        - name: blackbox-exporter
          image: harbor.ceclouddyn.com/intranet/blackbox-exporter:v0.21.1
          args:
            - '--config.file=/etc/blackbox_exporter/blackbox.yml'
            - '--log.level=info'
            - '--web.listen-address=:9115'
          ports:
            - name: blackbox-port
              containerPort: 9115
              protocol: TCP
          resources:
            limits:
              cpu: 200m
              memory: 256Mi
            requests:
              cpu: 100m
              memory: 50Mi
          volumeMounts:
            - name: config
              mountPath: /etc/blackbox_exporter
          readinessProbe:
            tcpSocket:
              port: 9115
            initialDelaySeconds: 5
            timeoutSeconds: 5
            periodSeconds: 10
            successThreshold: 1
            failureThreshold: 3
          terminationMessagePath: /dev/termination-log
          terminationMessagePolicy: File
          imagePullPolicy: IfNotPresent
      restartPolicy: Always
      terminationGracePeriodSeconds: 30
      dnsPolicy: ClusterFirst
      securityContext: {}
      schedulerName: default-scheduler
  strategy:
    type: RollingUpdate
    rollingUpdate:
      maxUnavailable: 25%
      maxSurge: 25%
  revisionHistoryLimit: 10
  progressDeadlineSeconds: 600

 配置service

apiVersion: v1
kind: Service
metadata:
  name: blackbox-exporter
  namespace: product-coc-monitor
  labels:
    app: org0-orderer1
spec:
  ports:
    - name: blackbox-port
      protocol: TCP
      port: 9115
      targetPort: 9115
  selector:
    app: blackbox-exporter
  clusterIP: 自动生成的IP
  type: ClusterIP
  sessionAffinity: None

配置serviceMoniter

apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: prometheus-blackbox-exporter
  namespace: product-coc-monitor
spec:
  endpoints:
    - params:
        module:
          - http_2xx
        target:
          - web:3000
      path: /probe
      port: blackbox-port
    - params:
        module:
          - icmp
        target:
          - 10.253.16.17
      path: /probe
      port: blackbox-port
  namespaceSelector:
    matchNames:
      - product-coc-monitor
  selector:
    matchLabels:
      app: org0-orderer1

按照以上配置即可在Prometheus的页面看到blackbox-exporter的配置啦