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Tracing setup

This sections shows how to enable tracing for tekton reconcilers and capture traces in Jaeger

Prerequisites

Jaeger should be installed and accessible from the cluster. The easiest way to set it up is using helm as below

the following command installs Jaeger in jaeger namespace

helm repo add jaegertracing https://jaegertracing.github.io/helm-charts
helm upgrade -i jaeger jaegertracing/jaeger -n jaeger --create-namespace

Use port-forwarding to open the jaeger query UI or adjust the service type to Loadbalancer for accessing the service directly

kubectl port-forward svc/jaeger-query -n jaeger 8080:80

Check the official Jaeger docs on how to work with Jaeger

Enabling tracing

Tekton pipelines controller expects the following environment variables to be able to connect to jaeger:

  • OTEL_EXPORTER_JAEGER_ENDPOINT is the HTTP endpoint for sending spans directly to a collector.
  • OTEL_EXPORTER_JAEGER_USER is the username to be sent as authentication to the collector endpoint.
  • OTEL_EXPORTER_JAEGER_PASSWORD is the password to be sent as authentication to the collector endpoint.

OTEL_EXPORTER_JAEGER_ENDPOINT is the only manadatory variable to enable tracing. You can find these variables in the controller manifest as well.