[[PageOutline]]

= Massive Deployment of Xen enabled Virtual Cluster with Diskless Remote Boot Linux =

== Test Environment ==

 * VMWare Server 1.0.3
 * VMWare Image debian 4.0r1 as DRBL Server
   * [[Image(drbl_xen_vmx.jpg)]]
 * VMWare Image without disk as DRBL Client
   * [[Image(drbl_xen_client_vmx.jpg)]]

== Pre-installation ==

 * First, install Xen Hypervisor and Xen enabled Linux Kernel and then reboot
{{{
root@drbl-xen-srv:~# uname -a
Linux drbl-xen-srv 2.6.18-6-686 #1 SMP Sat May 24 10:24:42 UTC 2008 i686 GNU/Linux
root@drbl-xen-srv:~# apt-get install xen-hypervisor-3.0.3-1-i386-pae linux-image-2.6.18-6-xen-vserver-686 xen-tools libc6-xen
root@drbl-xen-srv:~# update-grub
root@drbl-xen-srv:~# reboot
}}}
   * Note: If you did not install libc6-xen, you might have "4gb seg fixup" error message keep showing up while booting.
   * [[Image(xen_4gb_seg_fixup.png)]]
 * Choose Xen to boot at GRUB menu
   * [[Image(xen_grub.png)]]
 * Install DRBL
   * Download GPG-KEY-DRBL and add GPG key via apt-key
{{{
root@drbl-xen-srv:~# wget http://drbl.nchc.org.tw/GPG-KEY-DRBL
root@drbl-xen-srv:~# apt-key add GPG-KEY-DRBL
}}}
   * Add DRBL repository URL
{{{
root@drbl-xen-srv:~# echo "deb http://free.nchc.org.tw/drbl-core drbl stable" > /etc/apt/sources.list.d/drbl-sources.list
}}}
   * Use drblsrv command to setup DRBL server. Here we choose linux-image-2.6.18-6-486 as default DRBL PXE kernel image
{{{
root@drbl-xen-srv:~# /opt/drbl/sbin/drblsrv -i 
[....skip....]
Install kernel for clients... ...
In ayo repository, searching the latest kernel ...
*****************************************************.
Now run: /opt/drbl/sbin/drblsrv-offline -c -d -a -l en_US -k /var/cache/apt/archives/linux-image-2.6.18-6-486_2.6.18.dfsg.1-18etch5_i386.deb "" ""
Kernel package /var/cache/apt/archives/linux-image-2.6.18-6-486_2.6.18.dfsg.1-18etch5_i386.deb is used for client...
*****************************************************.
[....skip....]
}}}