[Openstack] openstack for citrix xenserver 5.6 SP2

Balaji Venkataraman xbalaji at gmail.com
Mon Sep 19 05:37:09 UTC 2011


Thanks for clarifying, I've missed this if it were documented somewhere. Now
one follow up question to this is, how does a nova-code create another vm,
if it is not in control domain? Is that explained somewhere?

Thanks and Regards,
Balaji

On Sun, Sep 18, 2011 at 10:29 PM, Ewan Mellor <Ewan.Mellor at eu.citrix.com>wrote:

>  That’s not how we set it up, no.  We use a service VM so that we can
> isolate Nova from XenServer’s control domain.****
>
> ** **
>
> This gives us better****
>
> **·         **fault tolerance - we can restart the whole VM if we need to,
> without disturbing the rest of the host****
>
> **·         **performance isolation - we can impose quality-of-service
> restrictions on the service VM, and****
>
> **·         **security - the two control planes can be isolated.****
>
> ** **
>
> It also means that we can run a modern distro in the service VM while the
> control domain stays with something older and stable.****
>
> ** **
>
> Cheers,****
>
> ** **
>
> Ewan.****
>
> ** **
>
> *From:* Balaji Venkataraman [mailto:xbalaji at gmail.com]
> *Sent:* 18 September 2011 22:21
> *To:* Ewan Mellor
> *Cc:* Rafi Khardalian; Todd Deshane; openstack at lists.launchpad.net
>
> *Subject:* Re: [Openstack] openstack for citrix xenserver 5.6 SP2****
>
>  ** **
>
> Thanks for your reply. Isn't nova-node installed on the Hypervisor
> directly? Is there something I've failed to understand?
>
> Thanks and Regards,
> Balaji****
>
> On Sun, Sep 18, 2011 at 9:54 PM, Ewan Mellor <Ewan.Mellor at eu.citrix.com>
> wrote:****
>
> Plenty of people are using OpenStack with XenServer in major deployments,
> including Rackspace and Citrix.  If you’re struggling to get it working,
> then I apologise for our poor documentation!  We’d certainly like to
> understand why so that we can fix the problem.  I’ve cc’d Todd Deshane at
> Xen.org, who has been working on this recently too.****
>
>  ****
>
> To start with, I think that you’re going about it completely the wrong
> way.  The instructions are set up for a virtual machine running the Nova
> components, with only a few minor modifications to XenServer itself (the
> addition of a few plugins).  If you’re compiling apt-get from source then
> you are definitely going to fail!  You should start with a VM and install
> Nova there (Ubuntu Maverick works well if you’re following those
> instructions below, though anything with Python 2.6 should work with enough
> effort).****
>
>  ****
>
> I can also tell you that XenServer 6.0 will be released in approximately
> one week (it has already left engineering).  That release has a number of
> major improvements targeted at OpenStack, including a massive performance
> boost on the networking side and new versions of Xen and the Open vSwitch.
> I strongly recommend working with XS 6.****
>
>  ****
>
> Cheers,****
>
>  ****
>
> Ewan Mellor,****
>
> Director, Engineering, OpenStack at Citrix.****
>
>  ****
>
> *From:* openstack-bounces+ewan.mellor=citrix.com at lists.launchpad.net[mailto:
> openstack-bounces+ewan.mellor=citrix.com at lists.launchpad.net] *On Behalf
> Of *Balaji Venkataraman
> *Sent:* 18 September 2011 21:00
> *To:* Rafi Khardalian
> *Cc:* openstack at lists.launchpad.net
> *Subject:* Re: [Openstack] openstack for citrix xenserver 5.6 SP2****
>
>  ****
>
> Rafi:
>
> Thanks for the link, I looked at it earlier, from what I understand the
> wiki page assumes
> a Type 2 Hypervisor. My idea is to make Citrix Xenserver  (Type 1
> Hypervisor) as a
> nova-node. I spent sometime on this but was going no  where. Installed gcc,
> g++, make
> etc  to compile apt-get from source on Xenserver. Then ran into issues as
> apt-get
> expects some files which are missing in Xenserver.
>
> Hope someone can shed some light, I see openstack claims support in
> Xenserver but
> is it on a standard Xenserver downloaded from Citrix or a custom built
> Xenserver?
>
> Thanks and Regards,
> Balaji****
>
> On Sun, Sep 18, 2011 at 6:43 PM, Rafi Khardalian <rafi at metacloud.com>
> wrote:****
>
> The only document covering the subject is here:****
>
>  ****
>
> http://wiki.openstack.org/XenServerDevelopment****
>
>  ****
>
> Support for Xenserver seems more like a work-in-progress than anything I
> would consider using in a production environment.  XAPI plugins need to be
> installed on each hypervisor's dom0 with an associated nova-compute instance
> also running as a domU (one per pool is not sufficient, AFAIK).  After
> battling with it for almost a week, I gave up and decided to go with KVM.
>  Thus far I've been rather pleased with the combination.****
>
>  ****
>
> If anyone has more information about this, I'd be happy to be wrong.****
>
>  ****
>
> Rafi****
>
>  ****
>
>  ****
>
> On Sun, Sep 18, 2011 at 5:44 PM, Balaji Venkataraman <xbalaji at gmail.com
> > wrote:****
>
>  ****
>
>
> We are trying to configure citrix xenserver as nova-node, but we are not
> able to install the nova tools, is this supported? If so, can someone share
> the details or point to the wiki page.
>
>
> Thanks and Regards,
> Balaji****
>
>    ****
>
> ** **
>
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