Posted on Sunday March 13, 2016 by Eric Potvin
You don't want to reboot your server if you accidentally hit the CTRL+ALT+DELETE key combo.
To disable the reboot action, edit the control-alt-delete.conf file:
sudo vi /etc/init/control-alt-delete.conf
and delete or comment out the following line:
#exec shutdown -r now "Control-Alt-Delete pressed"