<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Dmitris:<div><br></div><div>Your best bet would be to take a look at the Quantum project: <a href="https://launchpad.net/quantum">https://launchpad.net/quantum</a></div><div><br></div><div><br></div><div><div apple-content-edited="true">
<div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>Take care,</div><div><br></div><div>Lorin</div><div>--</div><div>Lorin Hochstein</div><div>Lead Architect - Cloud Services</div><div>Nimbis Services, Inc.</div><div><a href="https://www.nimbisservices.com/">www.nimbisservices.com</a></div><div><br></div></div></span><br class="Apple-interchange-newline"></div><br class="Apple-interchange-newline"><br class="Apple-interchange-newline">
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<br><div><div>On Mar 15, 2012, at 10:25 AM, Dimitris Theodorou wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>Hi,<br><br>I am working on a cloud network resource provisioning service, which<br>will accomodate networking among virtual machines by configuring the<br>network hardware(switches) that lies between the hosts. The goal of the<br>service is 1) to undo the "vlan clean" requirement that you have in<br>Nova and other cloud stacks, 2) to be able to provide bandwidth<br>requests and 3) to take decisions on how the network will be allocated<br>based on the current switching and network infrastructure of the<br>cluster that hosts the cloud service. The service should also easily<br>support any switch model.<br><br>The simplest functionality of the system (let's call it NRS) is that it<br>receives a request containing a network, as well as the VM hosts that<br>should be connected to it. It then chooses a suitable vlan (if not<br>given), and configures host bridges and switches involved so that the<br>network is realised. (the latter part may have some association with<br>Nova's Network controller, however I have not looked into Nova<br>implementation details yet).<br><br>To interface with Nova to receive the request, the idea is that I need a<br>single point during its execution when all VMs that belong to a network<br>are assigned to hosts, but before the VMs are actually launched. The<br>host-vm info is to be sent to NRS, which will respond with whether Nova<br>can proceed with launching VMs. However I do not know how Nova's<br>Scheduler assigns hosts and if it allows for such a concept, or it has<br>to be modifed.<br><br>My question is:<br><br>Is there such a point during Nova execution where I can easily insert<br>the NRS functionality, or are things more complicated? Also if you have<br>any comments/criticism on the project and how it fits with OpenStack<br>I would be happy to hear them.<br><br>Dimitris<br><br><br><br>_______________________________________________<br>Mailing list: <a href="https://launchpad.net/~openstack">https://launchpad.net/~openstack</a><br>Post to : <a href="mailto:openstack@lists.launchpad.net">openstack@lists.launchpad.net</a><br>Unsubscribe : <a href="https://launchpad.net/~openstack">https://launchpad.net/~openstack</a><br>More help : <a href="https://help.launchpad.net/ListHelp">https://help.launchpad.net/ListHelp</a><br></div></blockquote></div><br></div></body></html>