设置 Prometheus Operator 以监控 .net 核心应用程序

Question

我已经在我的 kubernetes 开发集群上成功设置了 prometheus 和 grafana（如下所示：https://itnext.io/kubernetes-monitoring-with-prometheus-in-15-minutes-8e54d1de2e13）。

为我的示例 .net 核心应用程序将此添加到 Startup.cs：

    public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
    {
        var counter = Metrics.CreateCounter("PathCounter", "Counts requests to endpoints", new CounterConfiguration
        {
            LabelNames = new[] { "method", "endpoint" }
        });
        app.Use((context, next) =>
        {
            counter.WithLabels(context.Request.Method, context.Request.Path).Inc();
            return next();
        });
        app.UseMetricServer();

我应该为 app.UseMetricServer（此处？）指定任何内容吗？

我已经应用此 yaml 来添加我要抓取的应用程序：

apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: buygroup
  labels:
    app: buygroup
    release: prom
spec:
  namespaceSelector:
    any: true
  selector:
    matchLabels:
      app: buygroup
  endpoints:
  - port: web
    interval: 10s

我没有在目标中看到任何收集的内容：http://localhost:9090/targets

已安装 .net 仪表板但未显示任何结果：

我需要做什么才能从我的应用程序中抓取结果 "buygroup"？

服务 yaml：

apiVersion: v1
kind: Service
metadata:
  name: buygroup
  labels:
    name: buygroup
spec:
  type: NodePort
  selector:
    app.kubernetes.io/instance: buygroup
    app.kubernetes.io/name: buygroup
  ports:
  - name: http
    port: 80
    nodePort: 30601
    targetPort: http

服务监视器：

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

Answer 1

我想通了：

服务监控：

apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: prometheus-operator-buygroup
  namespace: monitoring
  labels:
    app: prometheus-operator-buygroup
    release: prometheus-operator
spec:
  selector:
    matchLabels:
      # Target app service
      app.kubernetes.io/instance: buygroup
      app.kubernetes.io/name: buygroup
  endpoints:
  - interval: 15s
    path: /metrics
    port: http
  namespaceSelector:
    any: true

服务：

apiVersion: v1
kind: Service
metadata:
  name: prometheus-operator-buygroup
  labels:
    app: buygroup
    app.kubernetes.io/instance: buygroup
    app.kubernetes.io/name: buygroup
spec:
  type: ClusterIP
  ports:
  - name: http
    protocol: TCP
    port: 80
    targetPort: http
  selector:
    app: buygroup
    app.kubernetes.io/instance: buygroup
    app.kubernetes.io/name: buygroup

设置 Prometheus Operator 以监控 .net 核心应用程序

Setup Prometheus Operator to monitor .net core app

.net

.net-core

prometheus-operator