On Tue, Jan 5, 2010 at 1:31 PM,
<xen-users-request@xxxxxxxxxxxxxxxxxxx> wrote:
---------- Forwarded message ----------
From: Boris Quiroz <boris.quiroz@xxxxxxxxxx>
To: xen-users@xxxxxxxxxxxxxxxxxxx
Date: Mon, 04 Jan 2010 17:17:25 -0300
Subject: Re: [Xen-users] Install CentOS as Dom-U
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
On 01/04/2010 02:13 PM, Daniel Lam wrote:
> Hi there,
>
> I'm getting confused trying to install CentOS as Dom-U.
>
> I'm trying to follow instructions here,
>
> http://wiki.centos.org/HowTos/Xen/InstallingCentOSDomU
>
> which is to
>
> 1. Download "domU installation initrd image and kernel" from CentOS
> mirrors site
> 2. Create a Domain Config File which kernel and ramdisk parameters point
> to the
> files in step 1
> 3. Install the domain U by running "xm create <domain config file>"
>
> So far so good. However in this domain U installation process, it asks about
> package source location and the instructions in wiki suggested supplying
> the
> normal CentOS download location. I'm confused - this is as if I'm
> installing
> a "real" CentOS, like installing dom0.
>
> My questions:
>
> - If I proceed, am I installing as a para-virtualized CentOS (which is
> what I want),
> or am I installing as a full-virtualized CentOS (which is what it
> looks like to me at the moment)?
>
When you install that way, you install a para-virtualized CentOS.
I see... thanks.
> - When I was previously using Debian as domain-0, xen-tools set up the
> guest domain
> configuration file in such a way that its kernel parameter is
> specified "/boot/vmlinuz-2.6.26-2-xen-686".
> However in the CentOS wiki, it's suggesting not to specify it after
> install.
> I don't get it - Should kernel be specified? And if it is, does it
> mean the kernel of
> domain-U is actually in domain 0?
>
I think you can install some kind of GRUB (ie. pygrub) and use that to
boot up your DomU
Yes I saw the grub option in some archive too.. I believe that
domU would boot up like a real machine in that case.
What I don't understand thou, is that if a kernel parameter is
specified in the Domain Config File, does it mean the kernel
inside domU will not be used? As the kernel param specifies
a file in dom0.
> - With Debian I could use xen-tools. Are there similar tools with CentOS?
> Some pointed virt-install but that appears to not have CentOS as one
> of the OS options.
>
If your Dom0 is a Debian, you've xen-tools to manage all your DomU's,
doesn't matter is those are debian, centos, fedora, etc.
Yes I found that convenient too. However Debian does not give
an up-to-date Xen version, so I'm using CentOS instead.
Does anyone know if CentOS have a xen-tools like util?
Thanks!
Daniel
