Remote debugging in Netbeans

How to enable debuggning in netbeans on a remote server, to enable break points. 

 The server 

 Enable remote debugging in Tomcat. Edit the service file 

 sudo nano /etc/systemd/system/tomcat[VERSION].service 

 Copy the "CATALINA_OPTS" line and comment the old one out 

 Add the following add the end of the line (before the ending ping) 

 -XX:+UseParallelGC -Xdebug -Xrunjdwp:transport=dt_socket,address=*:9999,server=y,suspend=n 

 Save and exit nano 

 Reload the service 

 sudo systemctl daemon-reload 

 Restart tomcat 

 ts restart-webserver 

 Ensure that a process now is listening on port 9999 

 ss -lntu 

 Open port 9999 in the firewall using the IaaS providers interface 

 Netbeans 

 Ensure that you are running the same version of the software as the server, otherwise the break points wont make sense. 

 Attatch to the remote server 

 Select "Debug" and "Attach Debugger..." 

 

 Input the host and port 9999 

 

 Click OK 

 Find the "Debugger Console", normally in the bottom of the window, in the "Output" tab. 

 The console should read "User program running" 

 Try adding a break point and see if it works