openstack team mailing list archive

[Balaji Venkataraman <xbalaji@xxxxxxxxx>]

Is that http://wiki.openstack.org/XenAPI ?


On Sun, Sep 18, 2011 at 10:37 PM, Balaji Venkataraman <xbalaji@xxxxxxxxx>wrote:

> 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@xxxxxxxxxxxxx>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@xxxxxxxxx]
>> *Sent:* 18 September 2011 22:21
>> *To:* Ewan Mellor
>> *Cc:* Rafi Khardalian; Todd Deshane; openstack@xxxxxxxxxxxxxxxxxxx
>>
>> *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@xxxxxxxxxxxxx>
>> 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@xxxxxxxxxxxxxxxxxxx[mailto:
>> openstack-bounces+ewan.mellor=citrix.com@xxxxxxxxxxxxxxxxxxx] *On Behalf
>> Of *Balaji Venkataraman
>> *Sent:* 18 September 2011 21:00
>> *To:* Rafi Khardalian
>> *Cc:* openstack@xxxxxxxxxxxxxxxxxxx
>> *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@xxxxxxxxxxxxx>
>> 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@xxxxxxxxx
>> > 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****
>>
>>    ****
>>
>> ** **
>>
>
>