kahirul/otel-test

Local verification

NodeJS

1. Run the lgtm container docker-compose up
2. Build this autoinstrumentation npm install
3. Modify your service npm start script to look something like

   {
       ...
       "scripts": {
           "start": "tsc && node dist/src/server.js",
           "start:otel": "tsc && node --require <path-to-this-repo>/build/workspace/autoinstrumentation.js dist/src/server.js",
           ...
       }        
       ...
   }

4. Export following env variable (Optional)

   export OTEL_SERVICE_NAME=foo-local
   export OTEL_PROPAGATORS=tracecontext,baggage
   export OTEL_NODE_RESOURCE_DETECTORS=env,host,os,process

5. Run your service

   npm run start:otel

6. Trigger request or workflow so your app start sending metrics to Tempo
7. Open http://localhost:3000
   • Login with admin and admin for username and password
   • Go to Explore
   • Select Tempo as datasource (for Trace)
   • Search traceId you found in your log

JVM

1. Run the lgtm container docker-compose up

2. Download OTel agent

   curl -LO https://github.com/open-telemetry/opentelemetry-java-instrumentation/releases/latest/download/opentelemetry-javaagent.jar    

3. Export following env variable

   Optional

   export OTEL_SERVICE_NAME=foo-local
   export OTEL_PROPAGATORS=tracecontext,baggage
   export OTEL_NODE_RESOURCE_DETECTORS=env,host,os,process

   Mandatory

   export JAVA_TOOL_OPTIONS=-javaagent:opentelemetry-javaagent.jar

4. Run your service

   java -jar build/libs/foo-1.2.3.jar

5. Trigger request or workflow so your app start sending metrics to Tempo

6. Open http://localhost:3000

   • Login with admin and admin for username and password
   • Go to Explore
   • Select Tempo as datasource (for Trace)
   • Search traceId you found in your log