Open Stack

The VMWare and XenServer OpenStack support have very similar architectures. Every hypervisor has a VM that runs the nova-compute code. You don’t as such install it into the hypervisor. In the case of XenServer, there are certainly some plugins that are installed, but nova, at the moment, still runs in a VM on top of the hypervisor.

I don’t think OpenStack requires vCenter at all.

The email linked below looks like what is in the manual (and was previously on the wiki). I guess the format of the nova conf should be updated, but it looks mostly accurate from what I remember.

I hope that helps a little.

Thanks,
John

From: openstack-bounces+john.garbutt=eu.citrix.com at lists.launchpad.net [mailto:openstack-bounces+john.garbutt=eu.citrix.com at lists.launchpad.net] On Behalf Of Jorge de la Cruz
Sent: 25 April 2012 14:33
To: Atul Gosain
Cc: openstack at lists.launchpad.net
Subject: Re: [Openstack] Using VMWare ESXi with openstack

Hi,
I worked with Cloudstack too, Cloudstack use the vCenter for launch the VM's, destroy, etc. That is a good idea but you depend, always, for the good funcionality of vCenter.

The Information for Openstack is so short:
http://docs.openstack.org/trunk/openstack-compute/admin/content/VMWare_configuration_options.html

But i readed a good message before, this:
https://lists.launchpad.net/openstack/msg09607.html


Cheers
--

Jorge de la Cruz
Cloud Architect
www.stackops.com<http://www.stackops.com/> |  jorge.delacruz at stackops.com<login.jsp?at=a467f3be-21c0-4b31-9a1c-beee62395a4e&mailto=jorge.delacruz at stackops.com> | +34 91 309 48 77 | skype:jorge.delacruz.stackops
<http://www.stackops.com/>

[cid:~WRD000.jpg]

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________________________________
De: "Atul Gosain" <atul.gosain at gmail.com>
Para: openstack at lists.launchpad.net
Enviados: Miércoles, 25 de Abril 2012 15:18:35
Asunto: [Openstack] Using VMWare ESXi with openstack

Hi

 I tried to see how we can control any existing infrastructure of VMWare/XenServer etc from openstack.
What i understood is that nova compute needs to be installed on the hypervisors(compute hosts) which can be Ubuntu Servers for KVM etc.
Also for XenServer, we can build a package on Ubuntu and then will have to install on XenServer so that it can be controlled by cloud controller.

Basically openstack compute should be installed on hypervisor and accepts the instructions from controller to create VM's, assign IP addresses, destroy, attaching volumes etc.
Please confirm this understanding.

Based on this, i did not find anything on VMWare ESXi. How does the compute gets installed on ESXi server ?

Also, i have seen cloudstack working which seems to be little different than how openstack works. Cloudstack can control existing VMWare/XenServer/KVM etc using their respective API's.
It doesnt require any installation on the hypervisor itself. If my understanding is correct, then this seems to be a better model.
What is the reason that openstack cannot operate the hypervisors without installing compute on them ?

Thanks
Atul

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