Spring Boot Application with OTel Auto-Instrumentation

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.

Installation Steps

Install Docker

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 Dockerfile

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.

Docker Commands

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

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

Access App

• 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

Screenshots

Logs

Trace

Metrics