openstack team mailing list archive

[Dan Wendlandt <dan@xxxxxxxxxx>]

Hi Dimitris,

This sounds a lot like what the Quantum API and plugin interface is
intended to support.  I'd check out: http://wiki.openstack.org/Quantum and
feel free to send email to the netstack list for details on integration new
functionality.

Dan


On Thu, Mar 15, 2012 at 7:19 AM, Dimitris Theodorou <dtheodor@xxxxxxxxx>wrote:

> Hi,
>
> I am working on a cloud network resource provisioning service, which will
> accomodate networking among virtual machines by configuring the network
> hardware(switches) that lies between the hosts. The goal of the service is
> 1) to undo the "vlan clean" requirement that you have in Nova and other
> cloud stacks, 2) to be able to provide bandwidth requests and 3) to take
> decisions on how the network will be allocated based on the current
> switching and network infrastructure of the cluster that hosts the cloud
> service. The service should also easily support any switch model.
>
> The simplest functionality of the system (let's call it NRS) is that it
> receives a request containing a network, as well as the VM hosts that
> should be connected to it. It then chooses a suitable vlan (if not given),
> and configures host bridges and switches involved so that the network is
> realised. (the latter part may have some association with Nova's Network
> controller, however I have not looked into Nova implementation details yet).
>
> To interface with Nova to receive the request, the idea is that I need a
> single point during its execution when all VMs that belong to a network are
> assigned to hosts, but before the VMs are actually launched. The host-vm
> info is to be sent to NRS, which will respond with whether Nova can proceed
> with launching VMs. However I do not know how Nova's Scheduler assigns
> hosts and if it allows for such a concept, or it has to be modifed.
>
> My question is:
>
> Is there such a point during Nova execution where I can easily insert the
> NRS functionality, or are things more complicated? Also if you have any
> comments/criticism on the project and how it fits with OpenStack I would be
> happy to hear them.
>
> Dimitris
>
>
>
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-- 
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Dan Wendlandt
Nicira Networks: www.nicira.com
twitter: danwendlandt
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