Setup of VirtualBox with CentOS 6 for fast testing of deployment scripts

This guide shows the step to setup VirtualBox with CentOS 6 for your testing of deployment scripts on Rails.

Pre-requistions

VirtualBox is a virtual machine that will run your CentOS and acts as a separate machine
Follow the guide from http://opensourcedbms.com/dbms/installing-cent-os-6-3-linux-in-oracle-virtual-box-ssh-access/ to install and setup your CentOS with the following exceptions:
- Skip the steps on editing /etc/sysconfig/network-scripts/ifcfg-eth0 and setting up of SSH
- Use CentOS 6.4 (64-bits) instead of 6.3
- Make sure you disable SELinux (vi /etc/sysconfig/selinux and change the string from SELINUX=enforcing to SELINUX=disabled.). Note: You need to restart server for this change.

Make sure the Virtual machine is off
Go to Settings > Network > Adapter 1
Make sure "Attached to" is set to "Nat"
Click on Port Forwarding and set it to Protocal: TCP, Host Port: 2222, Guest Port: 22
Add another Protocal: TCP, Host Port: 8888, Guest Port: 80
Save it. This sets up the SSH and webserver port forwarding.
Go to Settings > Network > Adapter 2
Make sure "Attached to" is set to "Bridged Adapter" and set your Name to the wireless or wired connection of your computer
Turn on the virtual machine.
You can now SSH to the VM via: ssh localhost -p 2222 -l root
VM can access Internet.

Stop iptables (Linux firewall) for easier access to your computer service iptables stop
You would need to setup 2 ports for SSH due to Capistrano issue:

vi /etc/ssh/sshd_config

# Uncomment Port 22
# Add Port 2222 in the second line

service sshd restart
chkconfig sshd on # Make sshd start on boot

In running machine (CentOS Instance), go to Machine > Take Snapshot...
A snapshot of the current setup is created.
You can now mess with the instance :)
To return to the this snapshot, you simply go to VirtualBox Manager, click on the Snapshot (tab on the top right) and right-click on the snapshot to restore it.

To shutdown CentOS, shutdown -b now
You have selected the annoying mouse capture, you can disable it with VBoxManage modifyvm "your-host-name" --mouse usbmultitouch