How-To: Set up Zipkin for distributed tracing

Set up Zipkin for distributed tracing

Configure self hosted mode

For self hosted mode, on running dapr init the following YAML files are created by default and they are referenced by default on dapr run calls unless otherwise overridden.

  1. The following file in $HOME/dapr/components/zipkin.yaml or %USERPROFILE%\dapr\components\zipkin.yaml:
  • zipkin.yaml
apiVersion: dapr.io/v1alpha1
kind: Component
metadata:
  name: zipkin
  namespace: default
spec:
  type: exporters.zipkin
  metadata:
  - name: enabled
    value: "true"
  - name: exporterAddress
    value: "http://localhost:9411/api/v2/spans"
  1. The following file in $HOME/dapr/config.yaml or %USERPROFILE%\dapr\config.yaml:
  • config.yaml
apiVersion: dapr.io/v1alpha1
kind: Configuration
metadata:
  name: daprConfig
  namespace: default
spec:
  tracing:
    samplingRate: "1"
  1. The openzipkin/zipkin docker container is launched on running dapr init or it can be launched with the following code.

Launch Zipkin using Docker:

docker run -d -p 9411:9411 openzipkin/zipkin
  1. The applications launched with dapr run will by default reference the config file in $HOME/dapr/config.yaml or %USERPROFILE%\dapr\config.yaml and can be overridden with the Dapr CLI using the --config param:
dapr run --app-id mynode --app-port 3000 node app.js

Viewing Traces

To view traces, in your browser go to http://localhost:9411 and you will see the Zipkin UI.

Configure Kubernetes

The following steps shows you how to configure Dapr to send distributed tracing data to Zipkin running as a container in your Kubernetes cluster, how to view them.

Setup

First, deploy Zipkin:

kubectl create deployment zipkin --image openzipkin/zipkin

Create a Kubernetes service for the Zipkin pod:

kubectl expose deployment zipkin --type ClusterIP --port 9411

Next, create the following YAML files locally:

  • zipkin.yaml component
apiVersion: dapr.io/v1alpha1
kind: Component
metadata:
  name: zipkin
  namespace: default
spec:
  type: exporters.zipkin
  metadata:
  - name: enabled
    value: "true"
  - name: exporterAddress
    value: "http://zipkin.default.svc.cluster.local:9411/api/v2/spans"
  • tracing.yaml configuration
apiVersion: dapr.io/v1alpha1
kind: Configuration
metadata:
  name: tracing
  namespace: default
spec:
  tracing:
    samplingRate: "1"

Finally, deploy the the Dapr component and configuration files:

kubectl apply -f tracing.yaml
kubectl apply -f zipkin.yaml

In order to enable this configuration for your Dapr sidecar, add the following annotation to your pod spec template:

annotations:
  dapr.io/config: "tracing"

That’s it! your sidecar is now configured for use with Open Census and Zipkin.

Viewing Tracing Data

To view traces, connect to the Zipkin Service and open the UI:

kubectl port-forward svc/zipkin 9411:9411

In your browser, go to http://localhost:9411 and you will see the Zipkin UI.

zipkin

References