Re: [Xen-users] How to install an Ubuntu DomU on Ubuntu 10.04 Dom0

[David Cemin <davidcemin@xxxxxxxxx>]

Hi ..

I've made a step by step domU creation .. maybe it would help

# cat domU_create_steps.t2t 

Step by step domU creation

1) Create a directory to put your VMs

# mkdir -p /xen/domains/dom1

2) Create a disk and a swap image

# dd if=/dev/zero of=/xen/domains/dom1/diskimage.img bs=1024k count=5000

# dd if=/dev/zero of=/xen/domains/dom1/swapimage.img bs=1024k count=512

3) Create a file system to the images

# mkfs.ext3 /xen/domains/dom1/diskimage.img

# mkswap /xen/domains/dom1/swapimage.img

4) Test if it mounts

# mount -o loop /xen/domains/dom1/diskimage.img /mnt/tmp

5) Download a new OS onto virtual disk. In a debian-like system it is possible to use debootstrap(apt-get it).

# debootstrap --arch i386 lenny /mnt/tmp http://ftp.debian.org/debian

# debootstrap --arch i386 lucid /mnt/tmp http://archive.ubuntu.com/ubuntu/

6) Some configs

# vim /mnt/etc/network/interfaces

#To use Specific IP address - edit the /mnt/etc/network/interfaces manually.

#To use DHCP, edit and include the following:

    # The loopback network interface

   auto lo

   iface lo inet loopback

   # The primary network interface

   auto eth0

   iface eth0 inet dhcp

# cp -a /lib/modules/2.6.32.25 /mnt/tmp/lib/modules

#UNINSTALL NETWORK MANAGER and AVAHI

# apt-get remove network-manager avahi-daemon

# vim /mnt/tmp/etc/fstab

proc            /proc       proc    defaults    0 0

/dev/sda1       /           ext3    defaults,errors=remount-ro    0 1

/dev/sda2       none        swap    sw          0 0

#create a bridge to eth0

/etc/xen/scripts/network-bridge start netdev=eth0

7) Create domU config

# vim /etc/xen/dom1

kernel = "/boot/vmlinuz-2.6.32.25" #CHANGE IT TO YOUR VMLINUZ

ramdisk = "/boot/initrd.img-2.6.32.25" #CHANGE IT TO YOUR INITRD

memory = 512

name = "dom1"

vif = ['bridge=xenbr0']

disk = ['file:/xen/domains/dom1/diskimage.img,xvda1,w','file:/xen/domains/dom1/swapimage.img,xvda2,w']

#DHCP - remove the ip, gateway and netmask lines, and include:# dhcp = "dhcp"

#ip = "ip add"

#gateway = "ip add"

#netmask = "255.255.0.0"

dhcp = "dhcp"

root = "/dev/xvda1 ro"

extra = '4'

8) Link in the config file so that the Virtal Machine starts on Bootup of Dom0

# ln -s /etc/xen/dom1 /etc/xen/auto/dom1

9) Start up the VM :-)

# xm create dom1 -c

2010/11/5 buried shopno <buried.shopno@xxxxxxxxx>

Hi,

 

I'm a newbie in VM/Xen. As a first step to do some study/experiment on VM, I want to install Ubutnu (10.04) as DomU on top of Ubutu (10.04) Dom0.

 

I need some direction to stat with:

- how to install the DomU image

- how to configure the network address

 

I'd be greatly thankful to you for providing some useful link to this end. Thank you in advance.

 

Regards,

-shopno

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David Cemin
mobile: +55 51 93523097
home:   +55 51 32763785
email: davidcemin@xxxxxxxxx

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