Prometheus operator中的服务监控问题

Question

我有如下定义的service和servicemonitor，

kind: Service
apiVersion: v1
metadata:
  name: example-application
  labels:
    app: example-application
    teamname: neon
spec:
  selector:
    app: example-application
  ports:
  - name: backend
    port: 8080

apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: example-application
  namespace: monitoring
spec:
  selector:
    matchLabels:
      app: example-application
  endpoints:
  - port: backend
    path: /prometheus
  namespaceSelector:
    matchNames:
    - testns
  targetLabels:
    - teamname

Pod全部可用，我已经测试过了。

但是目标在Prometheus.Please中显示为DOWN，让我知道我错过了什么。

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Answer 1

我找到了缺失的部分。我必须在该路径上公开应用程序中的指标。

所以我关注了这篇文章https://medium.com/kubernetes-tutorials/simple-management-of-prometheus-monitoring-pipeline-with-the-prometheus-operator-b445da0e0d1a

出于示例目的，我使用本文中给出的相同图像作为deployment对象中指标的侧车容器，如下所示：

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: example-application
spec:
  replicas: 4
  template:
    metadata:
      labels:
        app: example-application
    spec:
      containers:
      - name: example-application
        image: nginx
        ports:
        - name: backend
          containerPort: 80
      - name: rpc-app-cont
        image: supergiantkir/prometheus-test-app
        ports:
        - name: web
          containerPort: 8081

然后将这个端口"web“添加到服务监视器。

现在它工作得很好..

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