Centos 7 – Install Gnome

yum -y groupinstall "GNOME Desktop" "Desktop Platform" "X Window System" "Fonts" "Graphical Administration Tools" "Internet Browser" "General Purpose Desktop" "Office Suite and Productivity" "Graphics Creation Tools" -y
yum -y groupinstall "Legacy X Window System compatibility"
vi /etc/inittab
id:5:initdefault:

startx