度量

Observing Dapr metrics in Kubernetes

Dapr 公开了一个 Prometheus 指标终结点，您可以扫描该终结点，以更深入地了解 Dapr 的行为方式，针对特定条件设置警报。

Configuration (配置)

默认情况下，指标终结点处于启用状态，您可以通过命令行参数 --enable-metrics=false 传递给 Dapr 系统进程来禁用它。

默认指标端口为 9090。 This can be overridden by passing the command line argument --metrics-port to Daprd. Additionally, the metrics exporter can be disabled for a specific application by setting the dapr.io/enable-metrics: "false" annotation to your application deployment. With the metrics exporter disabled, daprd will not open the metrics listening port.

  1. apiVersion: apps/v1
  2. kind: Deployment
  3. metadata:
  4.   name: nodeapp
  5.   labels:
  6.     app: node
  7. spec:
  8.   replicas: 1
  9.   selector:
  10.     matchLabels:
  11.       app: node
  12.   template:
  13.     metadata:
  14.       labels:
  15.         app: node
  16.       annotations:
  17.         dapr.io/enabled: "true"
  18.         dapr.io/app-id: "nodeapp"
  19.         dapr.io/app-port: "3000"
  20.         dapr.io/enable-metrics: "true"
  21.         dapr.io/metrics-port: "9090"
  22.     spec:
  23.       containers:
  24.       - name: node
  25.         image: dapriosamples/hello-k8s-node:latest
  26.         ports:
  27.         - containerPort: 3000
  28.         imagePullPolicy: Always

To disable the metrics collection in the Dapr side cars running in a specific namespace, you can use the metric spec configuration and set enabled: false to disable the metrics in the Dapr runtime.

  1. apiVersion: dapr.io/v1alpha1
  2. kind: Configuration
  3. metadata:
  4.   name: tracing
  5.   namespace: default
  6. spec:
  7.   tracing:
  8.     samplingRate: "1"
  9.   metric:
  10.     enabled: true

度量

默认情况下，每个 Dapr 系统进程都会发出 Go 运行时/进程指标，并有自己的指标：

参考资料