It is possible to migrate an exising game server to LinuxGSM.
Install the LinuxGSM server of choice as normal.
Once installed there will be a vanilla install in
Backup the serverfiles
mv serverfiles serverfilesbak
create a new serverfiles directory
Copy your existing server in to the empty serverfiles directory.
Ensure that the file structure matches that of
serverfilesbak i.e the executable, maps, etc. are in the same place.
Ensure the correct user permissions are used
chown -r gameserver:gameserver serverfiles
Copy the game server config to the new config file location found in
Run update to make sure you are up-to-date
Test that the server works.
Once complete delete