Update: Run this instead:
yum -y groupinstall 'GNOME Desktop Environment'
Sometimes I’ll do a basic install without any window manager (like gnome) and then want to add it after I’m done. This is most easily done by doing:
yum -y install gnome-desktop gnome-session gnome-applets gnome-panel gnome-utils gnome-screensaver
Once done do:
And you’re good!