Re: [Xen-users] Installing CentOS as DomU on Debian Lenny (dom0) Xen

[Mark Pryor <tlviewer@xxxxxxxxx>]

--- On Fri, 5/14/10, Tapas Mishra <mightydreams@xxxxxxxxx> wrote:

> From: Tapas Mishra <mightydreams@xxxxxxxxx>
> Subject: [Xen-users] Installing CentOS as DomU on Debian Lenny (dom0) Xen
> To: "Xen List" <xen-users@xxxxxxxxxxxxxxxxxxx>
> Date: Friday, May 14, 2010, 10:36 PM
> Hi,
> I have searched the question which I am asking.But if some
> one has
> mentioned on their blog or link some where they have
> mentioned as how
> they
> installed CentOS as DomU on Debian Lenny (dom0)running
> xen-3.2.1 and I
> should have a look

Go here and grab your boot files:
http://mirrors.kernel.org/centos/5.5/os/x86_64/images/xen/

vmlinuz
initrd.gz

$ cat cent55.py
name = "cent55"
uuid = "442db20d-7a82-409b-b8aa-a352c1fe127c"
maxmem = 512
memory = 512
vcpus = 2
#bootloader = "/usr/bin/pygrub"
#bootargs = "-q"
#kernel="/usr/lib/xen/boot/pv-grub-x86_64.gz"
# kernel=/vmlinuz-2.6.18-194.el5xen initrd=/initrd-2.6.18-194.el5xen.img
on_poweroff = "destroy"
on_reboot = "destroy"
on_crash = "destroy"
vfb = [ "type=vnc,vncunused=1,keymap=en-us" ]
disk = [ "phy:/dev/maxvm/cent55,xvda,w" ]
vif = [ "bridge=br0,mac=00:16:3e:3b:2a:2f" ]
extra = " install=http://mirrors.kernel.org/centos/5.5/os/x86_64/ console=tty0 
console=ttyS0,38400n8 console=xvc0"
------------------------ snip ----------------

to kickoff your PV install
$sudo xm create -c cent55.py kernel=vmlinuz ramdisk=initrd.gz

you will boot into a netinstall. You can point the installer back to 
the same http source above where the xen boot files came from, or better yet, 
use a local resource.

Be prepared to switch over from a console to vnc when prompted by the text 
install.

Accept installer defaults.
Before you do "first boot", test that pygrub can find your install.
#pygrub -q /dev/VolGrp/LV

Check the path /var/run/xend/boot. If there is no /boot subfolder, then create 
it.

you should see something like this:
Using <class 'grub.GrubConf.GrubConfigFile'> to parse /grub/menu.lst
linux (kernel /var/run/xend/boot/boot_kernel.P0o6ev)(ramdisk 
/var/run/xend/boot/boot_ramdisk.Y5yCn_)(args "ro root=/dev/VolGroup00/LogVol00 
console=xvc0 noresume selinux=0 ")

then edit cent55.py and uncomment the pygrub lines (x2).

To get the clock working, do
#nano /etc/sysctl.conf

add:
xen.independent_wallclock=1

to accept your changes
#sysctl -p

#yum install ntp
#chkconfig ntp on

I went throught this yesterday on karmic dom0 with no trouble.

-- 
Mark


      

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