This is a sample application that utilizes OpenTelemetry (OTel) auto-instrumentation to seamlessly collect logs, traces, and metrics, and then send them to a specified endpoint. No code change is required for enabling OpenTelemetry instrumentation.

Make sure Docker is installed on your system. You can use the following commands for installation:

sudo apt update
sudo apt install docker.io
sudo su -
usermod -aG docker ubuntu

Update the Dockerfile with the necessary environment variables for OTel configuration. You can set the endpoint and, if applicable, provide authentication headers.

ENV OTEL_EXPORTER_OTLP_ENDPOINT="https://otel.kloudmate.com:4318"
ENV OTEL_EXPORTER_OTLP_HEADERS="Authorization=<YOUR_SECRET_KEY>"

# If no authentication is required, use the endpoint only
# ENV OTEL_EXPORTER_OTLP_ENDPOINT="https://webhook.site/ddd1f40d-e3f7-4178-93e2-5f35760feaca"

No code change is required within the application for enabling OpenTelemetry.

Build the Docker image and run the container with the following commands:

docker build -t <imageName> .
docker run -p 8080:8080 <imageName>:<tag>

• The application will be accessible on http://localhost:8080
• RollDice will be accessible on http://localhost:8080/rolldice
• To pass Player name use queryparameter ?player=<playername> i.e http://localhost:8080/rolldice?player=sanjay