This is used as a message queue service to connect the checkout service with the accounting and fraud detection services.
The agent is passed into the process using the
-javaagent command line
argument. Command line arguments are added through the
KAFKA_OPTS in the
ENV KAFKA_OPTS="-javaagent:/tmp/opentelemetry-javaagent.jar -Dotel.jmx.target.system=kafka-broker"