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LinuxGSM requires tmux => 1.6
Tmux is a key component of LinuxGSM and replaced screen which was used on earlier versions. tmux has a few improvements over screen; mainly being better at handling standard Linux users, this was a major issue when developing with screen. tmux allows LinuxGSM to call up a game server running in the background so you can see what it is doing; this feature is available with console feature.
LinuxGSM using tmux in console
Some server admins have attempted to run LinuxGSM within a
screensession. As LinuxGSM calls tmux it is not possible to run LinuxGSM within a tmux or screen session.
tmux 1.8 has an issue that prevents console logging from working. This is because the
pipe-panefeature is broken in tmux 1.8 causing it not to output the console to the console log files. The only solution is to use another version of tmux.
tmux 1.8 is installed on CentOS 7 by default see guide below to installed a newer version
This issue normally occuires with CentOS and is caused by the standard user not having permissions to user
create session failed: ./srcds_linux -game csgo: Operation not permitted
To fix this the user needs to be part of the
usermod -G tty csgoserver
To confirm the user has been added check
grep tty /etc/group
Install Ghettoforge with the following command.
yum install http://mirror.ghettoforge.org/distributions/gf/gf-release-latest.gf.el7.noarch.rpm
Install tmux using the Ghettoforge repo.
yum --enablerepo=gf-plus install tmux
Once installed restart the server to complete the upgrade.