Is it possible to use OpenStack Neat on fully virtualized environments

[Albert Vonpupp]

Hello Anton,

Right now I only have virtualized resources to test Neat, it might not makes much sense right now to do that since Neat uses WOL.

So basically I have a single physical sever (shared with a couple more students) with 16Gb, so I could emulate there the physical machines using KVM. Each guest would be a nova-compute node of the OpenStack cloud.

I read on your thesis that the minimum size for an Ubuntu server image is 128Mb. To have those 28 machines I would need 3.5Gb for the 28 VMs and 512Mb for the virtualization overhead, so I guess that ~4Gb of RAM per physical (virtualized) guest should be enough, which lead me to have 2 (3 tops) KVM guests.

Did you run your experiments on physical machines? Do you think that the described method could work?

Is there a way for replacing WOL with anything else? I have seen this interesting project [1] but I still need to try it out.

[1] https://github.com/simoncadman/libvirt-wakeonlan

Many thanks.

Regards,
Albert.

[Anton Beloglazov]

Hi Albert,

Sorry for taking long to reply. I've done my experiments on physical machines. I'm not entirely sure that live migration of emulated VMs can be done between VMs on a single physical server. If it's possible, the communication overhead would be much lower than migrating over network, so this setup won't completely represent a real infrastructure.

I suppose replacing WOL is possible, but it may require some modification of Neat's code.

Cheers,

Anton

[Albert Vonpupp]

Thanks Anton,

No problem! Thanks for your help!

I switched to physical machines some days ago. I think I am almost done reproducing your experiments (I hope!), I just got the other error I described on a separated post.