Enable tracing with Jaeger on Sentinel by installing the opennms-core-tracing-jaeger feature. Configurations has to be made in the etc directory relative to the Sentinel home directory. Depending on your operating system the home directory is in /usr/share/sentinel for Debian/Ubuntu or /opt/sentinel for CentOS/RHEL. Create a file to load the tracing feature on startup sudo vi etc/featuresBoot.d/jaeger.boot Add the Jaeger feature and save the file opennms-core-tracing-jaeger Uninstalling the opennms-core-tracing-jaeger feature at runtime is not yet supported. To disable tracing with Jaeger, remove the reference from the features boot file and restart Sentinel. Create a configuration file for tracing settings sudo vi etc/custom.system.properties Add configuration properties for tracing with Jaeger JAEGER_AGENT_HOST=my-jaeger-host(1) 1 Replace the my-jaeger-host with your Jaeger instance where you collect the tracing information Available configuration options are listed in the Jaeger Core Readme. The Jaeger service name is the Instance-ID from Sentinel. Restart Sentinel to apply the changes sudo systemctl restart sentinel