How to run multiple applications in a microservice architecture on one Tomcat server?

Hi,

We have migrated from Netbeans to IntelliJ ultimate. We have a microservice architecture using tomcats. We figured out how to deploy multiple wars in one tomcat configuration. But when we want to do a modification in one of the modules, we now have to restart the complete server. In Netbeans we could run all of the applications on the same tomcat and redeploy without restarting the entire server.

People on stackoverflow suggest using different tomcats on different ports for each application or JRebel. That seems like a lot of configuration to set up for me. What do you guys suggest?