How to start Tomcat 9 on Ubuntu 18.04 as a service in debug mode?

kujaw

12/23/22, 7:42 AM

(looks like my question is evolving, after solving it I will edit it appropriately)

As in the title. I can run Tomcat as a service, but I have no idea how to run it in debug mode.

I've tried to run it in debug mode from terminal as in this question: https://stackoverflow.com/questions/16689274/how-to-start-debug-mode-from-command-prompt-for-apache-tomcat-server

For unix first export variables:

export JPDA_ADDRESS=8000
export JPDA_TRANSPORT=dt_socket

and to start server in debug mode:

%TOMCAT_HOME%/bin/catalina.sh jpda start

So I ran

$ export JPDA_ADDRESS=8000  
$ export JPDA_TRANSPORT=dt_socket
$ sudo /usr/share/tomcat9/bin/catalina.sh jpda start

I got in response

Using CATALINA_BASE:   /usr/share/tomcat9
Using CATALINA_HOME:   /usr/share/tomcat9
Using CATALINA_TMPDIR: /usr/share/tomcat9/temp
Using JRE_HOME:        /usr
Using CLASSPATH:       /usr/share/tomcat9/bin/bootstrap.jar:/usr/share/tomcat9/bin/tomcat-juli.jar
Tomcat started.

netstat -tpln | grep 8080 or 8000 shows me nothing.

However, when I'm running Tomcat as a service it starts listening on 8080 port. That's why I'm thinking that it would be nice to have it running in debug mode as a service, but I don't know how to do this.

374

0 + 2

java

tomcat

18.04

Rinzwind

12/23/22, 8:27 AM

Did you change `%TOMCAT_HOME%` to the dir that is `%TOMCAT_HOME%` or did you copy/paste `%TOMCAT_HOME%` into the service? Why run the service in debug mode? why not run tomcat in debug mode with the service off , fix the issue and then use the service?

kujaw

12/23/22, 8:39 AM

Yes, I changed the dir, in my case it's `/usr/share/tomcat9/bin/catalina.sh jpda start`. I'm trying to run the service because I don't know how where is the issue and I can't make it to run it with the service off. When I start it from terminal I'm getting `Tomcat started.` message but I can't access it from the broswer on 8080 port (when ran as a service, I can access it), which (the port) is written in server.xml file.

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: How to start Tomcat 9 on Ubuntu 18.04 as a service in debug mode?

TH: จะเริ่ม Tomcat 9 บน Ubuntu 18.04 เป็นบริการในโหมดดีบักได้อย่างไร

RO: Cum să porniți Tomcat 9 pe Ubuntu 18.04 ca serviciu în modul de depanare?

RU: Как запустить Tomcat 9 в Ubuntu 18.04 как службу в режиме отладки?

VI: Làm cách nào để khởi động Tomcat 9 trên Ubuntu 18.04 dưới dạng dịch vụ ở chế độ gỡ lỗi?

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