To start, stop, or restart Retain, you must start, stop, or restart Tomcat.
In Windows, Retain runs as a service. Open Services, select the Retain service then start, stop, or restart that service.
Use the following commands at the terminal prompt to start and stop Tomcat:
systemctl start retain-tomcat.service
systemctl stop retain-tomcat.service
systemctl restart retain-tomcat.service
systemctl status retain-tomcat.service