5.10. 使用 Prometheus 配置内置监控

先决条件

• 使用 Operator SDK 生成基于 Go 的 Operator
• 基于 Kubernetes 的集群已部署 Prometheus Operator

流程

• 在生成的 Operator 的 cmd/manager/main.go 文件中，在以下行中更改 metricsPort 的值：

  var metricsPort int32 = 8383

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先决条件

• 使用 Operator SDK 生成基于 Go 的 Operator
• 基于 Kubernetes 的集群已部署 Prometheus Operator

流程

• 将 metrics.CreateServiceMonitor() 帮助函数添加至您的 Operator 代码中：

  import(
      "k8s.io/api/core/v1"
      "github.com/operator-framework/operator-sdk/pkg/metrics"
      "machine.openshift.io/controller-runtime/pkg/client/config"
  )
  func main() {
  
      ...
      // Populate below with the Service(s) for which you want to create ServiceMonitors.
      services := []*v1.Service{}
      // Create one ServiceMonitor per application per namespace.
      // Change the below value to name of the Namespace you want the ServiceMonitor to be created in.
      ns := "default"
      // restConfig is used for talking to the Kubernetes apiserver
      restConfig := config.GetConfig()
  
      // Pass the Service(s) to the helper function, which in turn returns the array of ServiceMonitor objects.
      serviceMonitors, err := metrics.CreateServiceMonitors(restConfig, ns, services)
      if err != nil {
          // Handle errors here.
      }
      ...
  }

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