Since i am modifying a lot of .jar files on daily basis (due to the fact we deploy them with jboss application server but we don’t have the source) at my workplace i’ve decided to make a little experiment with the graylog installation.
I strongly advise to NOT do anything from the below if you’re not confident what are you doing exactly.
Here’s a few steps that if you follow up carefully you will succeed in changing the default background.
0. Stop the graylog-server service
- Most important step is to take a backup of graylog.jar (for debian ubuntu it’s located here : /usr/share/graylog-server
- Download graylog.jar via FTP/SFTP to your local computer
- Open graylog.jar with 7zip (this is very important to do , otherwise you can break the integrity of the jar file)
- While inside of graylog.jar locate any files that have extension .jpg (for my case it was the selected one)
- Drag\n\Drop them from the .jar to your local folder and check them until you see the default background
- Pick up your new background and rename it onto exactly the same name as it is in the graylog.jar
- Drag\n\Drop the desired background from your local folder to graylog.jar in 7zip
- Upload the graylog.jar back to the server
- Start the graylog-server service and wait for it to fully start
- Enjoy your new background