opentelemetry

Overview

This example shows how to use Workit to create a simple Node.js application - e.g. a worker that executes a simple task. You will learn how to instrument your application and get traces.

Have fun!

Installation

First, start Jaeger with docker

docker run -d --name jaeger \
  -e COLLECTOR_ZIPKIN_HTTP_PORT=9411 \
  -p 5775:5775/udp \
  -p 6831:6831/udp \
  -p 6832:6832/udp \
  -p 5778:5778 \
  -p 16686:16686 \
  -p 14268:14268 \
  -p 9411:9411 \
  jaegertracing/all-in-one:latest

Be sure to have a Camunda platform running. Let's say, you have Camunda BPM (default):

docker run -d --name camunda -p 8080:8080 camunda/camunda-bpm-platform:latest

Then, with your terminal, go to examples/opentelemetry run:

npm i && npm run build

and in order to deploy your bpmn and create a process instance in Camunda, run:

npm run deploy && npm run create-instance

Finally, run the worker by running the following command:

npm run worker

You can then navigate to http://localhost:16686 to access the Jaeger UI. You should see something like:

By clicking on a trace, you should see something like:

👏 Congrats, you have finished the tracing section!

FAQ

error sending spans over UDP: Error: send EMSGSIZE [...]

related issue: jaegertracing/jaeger-client-node#124 In your terminal, you can do something like:

% sysctl net.inet.udp.maxdgram
net.inet.udp.maxdgram: 9216
% sudo sysctl net.inet.udp.maxdgram=65536
net.inet.udp.maxdgram: 9216 -> 65536
% sysctl net.inet.udp.maxdgram
net.inet.udp.maxdgram: 65536

Useful links

• For more information on OpenTelemetry, visit: https://opentelemetry.io/
• For more information on workit, visit: https://villedemontreal.github.io/workit/

LICENSE

MIT