springboot2x-dd-tracer

Spring Boot 2.7.5 + Java 8 — Datadog APM Instrumentation

Instrument a deployed Spring Boot 2.7.5 application with Datadog APM using the Java tracer.

Prerequisites

• Skill setup-springboot2x has been completed successfully
• Datadog Agent running
• Datadog API key configured

Instructions

1. Download the Datadog Java tracer

wget -O dd-java-agent.jar https://dtdg.co/latest-java-tracer

2. Run with the tracer attached

java -javaagent:dd-java-agent.jar \
  -Ddd.service=springboot2x-app \
  -Ddd.env=sandbox \
  -Ddd.agent.host=localhost \
  -jar target/*.jar

3. Generate traffic

for i in $(seq 1 20); do
  curl -s http://localhost:8080/api/data > /dev/null
  curl -s -X POST http://localhost:8080/api/submit -H "Content-Type: application/json" -d '{"key":"test"}' > /dev/null
done

Validation

In the Datadog UI: APM > Services — look for springboot2x-app with env:sandbox.

Troubleshooting

Tracer not attaching (no DATADOG TRACER CONFIGURATION in logs)

Cause: -javaagent flag not before -jar in the command. Fix: Ensure -javaagent:dd-java-agent.jar comes before -jar.

Java 8 compatibility issues

Cause: Tracer version too new for Java 8. Fix: The latest dd-java-agent.jar supports Java 8. Verify with java -version.