Disable Ctrl-Alt-Del to restart the system in CentOS

In Linux, for security considerations, we allow anyone to press Ctrl-Alt-Del to restart the system. However, in the production environment, press Ctrl-Alt-Del to restart the system. In this article, we will introduce how to disable the hotkey in RHEL and CentOS. In RHEL5.X and CentOS5.X

In Linux, we allow anyone to pressCtrl-Alt-DelComeRestartSystem. However, in the production environment, press Ctrl-Alt-Del to restart the system. In this article, we will introduce how to disable the hotkey in RHEL and CentOS. ### Under RHEL 5.x and CentOS 5.x ### ProtectionInitProcess exemptionCtrl-Alt-Del, As shown below'/Etc/inittab'In Roy'Ca: ctrlaltdel: 'The first line: [root@localhost ~]# cat /etc/inittab# Trap CTRL-ALT-DELETE#ca::ctrlaltdel:/sbin/shutdown -t3 -r now We can also change the 'CA: ctrlaltdel: 'line to output logs. if anyone wants to use this hotkey to restart the server, there will be logs, [root@localhost ~]# cat /etc/inittab# Trap CTRL-ALT-DELETEca::ctrlaltdel:/bin/logger -p authpriv.warning -t init "Console-invoked Ctrl-Alt-Del was ignored" Under RHEL6.X and CentOS 6. X In RHEL6.X and CentOS 6. X, the actions of the hotkey are as follows'/Etc/init/control-alt-delete.conf'Control. Step 1Before changing, use the following command to back up the configuration [root@localhost ~]# cp -v /etc/init/control-alt-delete.conf /etc/init/control-alt-delete.override Step 2Edit the file and replace the 'exec/sbin/shutdown 'line with the following configuration. this configuration will output the log every time you press Ctrl-Alt-Del: [root@localhost ~]# cat /etc/init/control-alt-delete.confexec /usr/bin/logger -p authpriv.notice -t init "Ctrl-Alt-Del was pressed and ignored" Via: http://www.linuxtechi.com/disable-reboot-using-ctrl-alt-del-keys/ Author: Pradeep Kumar translator: 2q1w2007 proofreader: wxy This article was originally translated by LCTT and launched with the Linux honor in China