opentelemetry-go-example

README

https://github.com/open-telemetry/opentelemetry-go-contrib/tree/main/examples/otel-collector

Prerequisites

Ensure you have Docker Compose V2 installed before proceeding with this demo.

Deploying with Docker Compose

Use the following command to start up the OpenTelemetry Collector, Jaeger, and Prometheus, while exposing the necessary ports for accessing the data:

docker compose up -d

Running the Application

The complete code for this example is located in the main.go file. To run it, make sure you have a recent version of Go (preferably >= 1.13), then execute:

go run main.go

This example simulates an application performing tasks for ten seconds before finishing.

Viewing Instrumentation Data

Now for the exciting part—let's explore the telemetry data produced by the sample application!

Jaeger UI

To view the generated traces, open your web browser and go to http://localhost:16686.

Prometheus

To view the generated metrics, such as testapp_run_total, open your browser and navigate to http://localhost:9090.

Shutting Down

To stop and clean up the example, run:

docker compose down

Deploy collector

https://opentelemetry.io/docs/collector/installation/#manual-linux-installation