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.

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nodeapp
  labels:
    app: node
spec:
  replicas: 1
  selector:
    matchLabels:
      app: node
  template:
    metadata:
      labels:
        app: node
      annotations:
        dapr.io/enabled: "true"
        dapr.io/app-id: "nodeapp"
        dapr.io/app-port: "3000"
        dapr.io/enable-metrics: "true"
        dapr.io/metrics-port: "9090"
    spec:
      containers:
      - name: node
        image: dapriosamples/hello-k8s-node:latest
        ports:
        - containerPort: 3000
        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.

apiVersion: dapr.io/v1alpha1
kind: Configuration
metadata:
  name: tracing
  namespace: default
spec:
  tracing:
    samplingRate: "1"
  metric:
    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：

Dapr metric list

参考资料

May 29, 2021: New Crowdin updates (#72) (602a67f8)