Java remote debugging (JPDA) not working for me in Tomcat 9

Question

I\'m trying to remotely debug a Tomcat webapp on a recently upgraded Tomcat 9.0.13 and Open JDK 11.0.1. Server is Redhat Enterprise Linux 7.6 and I\'m using Eclipse on a Window

Answer 1

I had this exact same issue. I'm running an application from a centos vm and trying to debug from my windows machine.

I had to go into the catalina.sh file on the vm and make an edit. In the section that says that handles the jpda flag, the JPA_OPTS variable needed to be changed to JPDA_OPTS="-agentlib:jdwp=transport=$JPDA_TRANSPORT,address=*:$JPDA_ADDRESS,server=y,suspend=$JPDA_SUSPEND"

Note the *: before the JPDA variable. This allows any ip address to have access to remote debugging. I believe by default it only allows local host.

Hope this helps.