Re: RAC on KVM- is that possible?
- From: Karl Arao <karlarao@xxxxxxxxx>
- To: development@xxxxxxxxxxxxxxxxx
- Date: Thu, 26 Nov 2009 22:10:21 +0800
Hi Martin,
With the release of RHEL 5.4, you could either use KVM or XEN (not both)..
in the installation (anaconda) on the Virtualization Group you'll either
check the "KVM" or "XEN"... else it will install the XEN kernel which
someone from RedHat told me you'll likely to encounter issues.
Then on RHEL KVM.. they've acquired the company Qumranet which started the
KVM project back in 2006 (i think available since Fedora7)..... Qumranet
have this SolidICE virtualization platform which is the foundation of the
product called "RedHat Enterprise Virtualization".... since it was newly
acquired the current version 2.1 of RHEV Manager only runs on Windows Server
2k3 32bit plus you must have an AD (for user provisioning) and yeah the
default install will have the SQL Server express as its metadata store. This
sounds weird.. but the product is promising (of course also the
features+speed), currently they're having a cross platform re-architecture
and porting it to Java and Jboss... and this will be released as version 3.0
could be together with the launch of RHEL 6. Enough with the background...
:p
So in RHEL 5.4, are you required to use RHEVM for you to be able to use KVM?
..... answer: nope
You could still use the libvirt (virt-manager) and make KVM guests. But how
about the Shared Disks for RAC installation? mmmm... if I use libvirt.. I've
not yet explored the possibility of using FC storage.. but most likely I'll
also use iSCSI.. on the networking part you'll configure bridged interfaces
(on RAC you need minimum of two), good thing is if you have more eth devices
you can dedicate an eth device to a particular guest (you can also do this
on rhevm + it has other PCI pass-through stuff)..
if I'll use RHEVM for RAC.. and I need Shared Disks then if I have SAN I
could make us of the "FC storage pool" (it could either be NFS,iSCI,or FC)..
then I'll just create virtual guests to utilize the "FC storage pool"...
These are some stuff that are good to try and explore on RHEL.. :) but still
if you present this to a client, there are some that still has apprehensions
if they will be supported by Oracle if they found out that they're running
it on a different virtualization technology.. Well, XEN on RHEL will at
least be supported until 2014.. I don't know how Oracle will handle that...
if they are going to reachitecture the OVM platform on KVM.. hmm..
Hope I've enlightened you a bit (at least) on this response :)
- Karl Arao
http://karlarao.wordpress.com
On Thu, Nov 26, 2009 at 8:43 PM, Martin Bach
<development@xxxxxxxxxxxxxxxxx>wrote:
> Esteemed list members,
>
> has anyone ever set up RAC virtual machines using KVM? I am about to have
> Fedora 12 installed on my PC. The virtualisation guide and the official
> sources state that FC 8 is the last Fedora Core release that officially can
> run as a dom0. There is a faint possibility that Fedora 13 (Kernel 2.6.33)
> might have it included but that's still in development. And neither do I
> want to compile it in myself...
>
> The biggest problem could be the requirement of having "shared storage", in
> xen this is almost trivial to have. A workaround could be a VM running
> openfiler exporting iscsi drives but that's additional overhead I'd like to
> avoid.
>
> I have really good experience with OpenSuSE 11.1 and running
> paravirtualised domUs.
>
> Thanks for any input!
>
> Martin
> --
> Martin Bach
> OCM 10g
> http://martincarstenbach.wordpress.com
> --
> //www.freelists.org/webpage/oracle-l
>
>
>
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