CentOS 7 as vbox guest - jneubert/doc GitHub Wiki

Preparations in vbox

Use latest (currently 4.3.18) vbox software
Create virtual machine
Add network devices as required (to be recognized by Centos installer)

Install CentOS

Download Centos ISO and insert (Settings -> Storage)
On the "Installation summary" screen
let Software Selection at the default (Minimal Install)
add and prioritize national keyboard
activate network adapters
set hostname
set timezone and activate ntp (requires active network)
adapt Installation Destination as required (defaults work fine)
Begin installation
Set root password, add user
After first boot, login as root and update system

yum upgrade
reboot

VBox guest addtions

Install required software

yum install bzip2 kernel-devel gcc perl

Insert (Devices -> Insert Guest Additions CD image) and mount ISO, run install

mount /dev/cdrom /mnt
/mnt/VBoxLinuxAdditions.run
umount /mnt

Install additional software

basic

yum install wget git atop vim

additional yum repositories

yum install epel-release
rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-2.el7.elrepo.noarch.rpm

web/db

yum install httpd httpd-devel php php-devel php-pgsql php-mbstring postgresql postgresql-devel

Weblinks

https://community.centminmod.com/threads/centos-7-0-install-on-virtualbox-guest-server.730/