[CentOS] text-mode system and /media

I'm running a headless server, so no GUI, just ssh logins. I don't seem to 
have the mechanism that automounts USB drives to a subdirectory of /media, 
and from googling around I think that's a feature of a GUI-based system. 
What implements it? Right now I manually create a mountpoint in /mnt and 
then manually mount by label from /dev/disk/by-label after plugging the 
drive in. It would be convenient if the drive automounted when plugged in.