kubernetes - 连接Redis导出器和Prometheus运算符

Question

我在Kubernetes集群的同一 namespace 中的两个单独的部署中都有一个Redis集群和Redis-exporter。我正在使用Prometheus运算符监视群集，但是找不到设置导出程序和运算符的方法。我已经设置了一个针对Redis导出器的服务(在下面检查)和一个ServiceMonitor(也在下面)。如果我转发到Redis导出器服务，则可以看到指标。另外，Redis导出器日志不会显示问题。

apiVersion: apps/v1
kind: Deployment
metadata:
  namespace: foo
  name: redis-exporter
  labels:
    app: redis-exporter
spec:
  replicas: 1
  selector:
    matchLabels:
      app: redis-exporter
  template:
    metadata:
      annotations:
        prometheus.io/scrape: "true"
        prometheus.io/port: "9121"
      labels:
        app: redis-exporter
    spec:
      containers:
      - name: redis-exporter
        image: oliver006/redis_exporter:latest
        resources:
          requests:
            cpu: 100m
            memory: 100Mi
        env:
        - name: REDIS_ADDR
          value:  redis-cluster.foo.svc:6379
        ports:
        - containerPort: 9121

我的服务和服务监视器

kind: Service
metadata:
  name: redis-external-exporter
  namespace: foo
  labels:
    app: redis
    k8s-app: redis-ext
  annotations:
    prometheus.io/scrape: 'true'
    prometheus.io/port: "9121"
spec:
  ports:
  - name: redis-ext
    port: 9121
    protocol: TCP
    targetPort: 9121
  selector:
    app: redis-exporter
---
apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: redis-external-exporter
  namespace: bi-infra
  labels:
    app: redis-external-exporter
    k8s-app: redis-monitor
spec:
  jobLabel: app
  selector:
    matchLabels:
      app: redis-ext
  namespaceSelector:
    matchNames:
    - foo
  endpoints:
  - port: redis-ext
    interval: 30s
    honorLabels: true

如果我切换到Redis集群旁边的Sidecar Redis导出器，则一切正常。有没有人遇到过这样的问题？

Answer 1

我在ServiceMonitor上缺少spec.endpoints.path
这是添加新的抓取目标并对tutorial进行故障排除的示例 list 。

apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: monitoring-pili
  namespace: monitoring
  labels:
    app: pili-service-monitor
spec:
  selector:
    matchLabels:
      # Target app service
      app: pili
  endpoints:
  - interval: 15s
    path: /metrics    <---
    port: uwsgi
  namespaceSelector:
    matchNames:
    - default