If you need a pure Debian/Ubuntu system, please see: One-click script to install pure Debian/Ubuntu version under Linux network

Only works with KVM, not OpenVZ.
Installation on CentOS 7 is not supported.
The default root password is Vicer

1. Make sure the required software is installed
1. Upgrade the system

Debian/Ubuntu:

 apt-get update

RedHat/CentOS:

 yum update

2. Install the required software

Debian/Ubuntu:

 apt-get install -y xz-utils openssl gawk coreutils file

RedHat/CentOS:

 yum install -y xz openssl gawk coreutils file

2. Download one-click script

 wget --no-check-certificate https://zhujiwiki.com/wp-content/uploads/2018/04/CentOSNET.sh chmod -x CentOSNET.sh

3. Use
1. Install CentOS 6.8 32-bit

 bash CentOSNET.sh -c 6.8 -v 32 -a

2. Install CentOS 6.8 64-bit

 bash CentOSNET.sh -c 6.8 -v 64 -a

3. Install CentOS 6.9 32-bit

 bash CentOSNET.sh -c 6.9 -v 32 -a

4. Install CentOS 6.9 64-bit

 bash CentOSNET.sh -c 6.9 -v 64 -a

via: https://moeclub.org/2018/03/26/597/