Centmin Mod is for installation on CentOS only. It is a modified version of Centmin original script written by George Liu (eva2000) which auto installs Nginx server and some software on image

Preferably, use CentOS 6.0 - 6.3 operating system where possible. If possible, setup a test server or virtualised server via Virtualbox or VMWare to test out Centmin Mod before doing install on live server. For quick tests, you can easily setup a 512MB memory, 16GB hard disk.

Step 1: Download latest version of Centmin Mod from (you can find latest version info here) and download at http://vbtechsupport.com/920/. Download link will later move to centminmod.com domain.

cd /usr/local/src
wget http://vbtechsupport.com/centminmenu/centmin-v1.2.2-eva2000.21.zip

Step 2: Extract files and change to centmin-v1.2.2mod directory and chmod +x centmin.sh bash script.
unzip centmin-v1.2.2-eva2000.21.zip
cd centmin-v1.2.2mod
chmod +x centmin.sh

Step 3: Run centmin.sh menu based installer and if this is first time installing, select option #1 for Centmin Install. If you are upgrading a server which already previously had Centmin Mod installed, you DO NOT need to run option #1, instead run option #4 and then #5 for upgrading Nginx web server and upgrading PHP.
./centmin.sh

More installs:

Setup phpmyadmin:
  1. Download phpmyadmin to /usr/local/nginx/html and unzip it
  2. Open phpmyadmin folder and change file name config.simple.inc.php to config.inc.php
  3. Run http://you-ip-web-server/phpmyadmin admin login with mysql root password (when install centmin it'll ask you for changing mysql root password).
Add Nginx vhost (add domain name to web server):
  1. Run ./centmin.sh again
  2. Choose #2 menu
  3. Input your domain name without www
  4. Change your domain A record to web server IP.
  5. All file at /home/nginx/domains/youdomainname.com/

Source: http://centminmod.com