HOWTO: Setup Headless Sun xVM VirtualBox 1.6 on Ubuntu Server 8.04

[kcnnc]

The steps are not too difficult but I did have to find a few places for information. Search on the forum turn up nothing on this subject so hopefully this HOWTO would be helpful to someone out there.

Note: This is not using the OSE version.

Background:
VirtualBox has a very good GUI running on the host to manage guest OS. However when running a server, we typically do not want to run X on it. Fortunately VirtualBox has commandline tools to manage guest systems. It also provides the VirtualBox Remote Desktop Protocol (VRDP) to allow connection to the guest remotely.

Clarification of terms used:
Host - refers to the machine we are trying to install VirtualBox.
Guest - the VirtualBox guest system that is setup on the host.
Remote - the PC that we are working on to connect to the host via SSH.

This setup was done on a fresh install of Ubuntu Server 8.04 with openssh-server installed.

All the following steps are done by SSH into the host from a remote (I'm using Windows for now).

1. Get required packages
Download the Ubuntu package for VirtualBox from
http://www.sun.com/software/products/virtualbox/get.jsp

Use

wget "download link here" -O virtualbox_1.6.2-31466_Ubuntu_hardy_i386.deb

We are using the non-OSE version here.

The manual from http://www.virtualbox.org/wiki/Downloads is also very useful.

2. Installation

sudo dpkg -i virtualbox_1.6.2-31466_Ubuntu_hardy_i386.deb

This will generate a bunch of dependencies. Fix them with

sudo apt-get -f upgrade

3. Decide on user, disk files location
First decide which user you want to run VirtualBox. Add this user to the vboxusers group.

sudo usermod -a -G vboxusers vboxuser

By default VirtualBox creates the directory .VirtualBox on the user home directory and put all the config and disk file there.
In my setup I put the disk files in /var/vbox as I had created a large partition for this purpose.

4. Install a guest OS
You will need an iso for the guest OS install CD. Copy or download it to the host.
For example we will just use ubuntu-8.04-server-i386.iso

-create a vm

VBoxManage createvm -name ubuntu -register

-config vm

VBoxManage modifyvm ubuntu -memory "256MB" -acpi on -boot1 dvd -nic1 nat

-create a disk

VBoxManage createvdi -filename "/var/vbox/ubuntu.vdi" -size 5000 -register

-add disk to vm

VBoxManage modifyvm ubuntu -hda "/var/vbox/ubuntu.vdi"

-register an install iso
VBoxManage registerimage dvd /var/vbox/ubuntu-8.04-server-i38.iso

-mount iso on vm

VBoxManage modifyvm ubuntu -dvd /var/vbox/ubuntu-8.04-server-i38.iso

-start the vm with port

VBoxHeadless -startvm ubuntu -p 3389 &

If you are running just 1 guest, the -p 3389 is optional. For more than 1 guest, it has to listen to different port.

5 Connect from remote
Since my desktop is still Windows, I use Remote Desktop Connection. (On XP, Start>All Programs>Accessories>Communications)

For Mac, use http://www.microsoft.com/mac/products/remote-desktop/
Ubuntu, look at http://ubuntuforums.org/showthread.php?t=824710

Just fill in the IP of your host (or IP:port if not the default) and you should see the Ubuntu installation waiting for you.

Other useful commands:

VBoxManage controlvm ubuntu poweroff
VBoxManage controlvm ubuntu reset

Getting Ubuntu Server to run in VirtualBox
After installation and restarting, you may find that the boot up hang with this error

This kernel requires the following features not present on the CPU: 0:6

To fix this, do the following:
1. Reset the guest
2. Hit F12 to choose to boot from the CD. (It goes by pretty quickly, reset again if you miss it.)
3. Select Rescue a broken system
4. After going through the install screens you will get a command prompt. Select to run it on the root system.
5. Install the virtual linux-virtual kernel

apt-get install linux-virtual

6. Reboot and this should fix the restart.

Upgrading kernel
If the kernel on the host is upgraded, the VirtualBox kernel module need to be re-compiled. Do the following steps:
1. apt-get install make gcc linux-headers-2.6.24-19-server (other kernel header, check uname -a)
2. /etc/init.d/vboxdrv setup
It should recompile the VirtualBox module and everything should be working again.

[singh.gurjeet]

A great help!!! Thanks.

Here's a small suggestion though.

In the 'Getting Ubuntu Server to run in VirtualBox' section, you do not need to go to lengths to fix this error! Especially, you do not wish to change kernel of your "server" system, because the default kernel that comes with 'Ubuntu Server' edition is configured specially for server purposes.

I also learnt it the hard way, so here it goes:

With the guest shutdown, in the GUI, select your VM; Click 'General' on the right-hand side, and shoose the 'Advanced' tab. Check the 'PAE/NX' check-box, and restart your guest. You should be up and running with the default kernel of 'Ubuntu Server'.

The problem here is that the Server edition's kernel assume that the box has 'PAE' support, whereas it is disabled by default in the VirtualBox.

HTH.

[kcnnc]

Yes I forgot that enable PAE also fixes it. This was the solution I first found while searching for the problem. Later I found out that there is a kernel specially built for virtual client and thought this might be the "right" thing to do.

Tell you the truth, I did it the lazy way too.

The command to do this for those using the commandline is:

VBoxManage modifyvm ubuntu -pae on

[stromdal]

Thanks singh.gurjeet for providing me with the simple solution to getting Ubuntu Server up and running under VirtualBox!

Thanks also to kcnnc for creating this apprehensive guide to setting up VirtualBox from CLI. I've just started exploring VirtualBox and I'm running it on a Ubuntu Desktop for now but will probably migrate to Server before deploying it, so this guide will come in handy within short.