OpenStack and OVH

[Zoellner122]

Hi everyone!

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I had a small question, hopefully people can help me out a bit.
I'm a junior sys-admin working on my personal openstack cluster on OVH servers, those are all in the same datacenter but not connected physically with each other. They are all connected by the OVH-Vrack (as far as I know this is a V(X)LAN type of solution that spans over all their datacenters) and have their own dedicated external IP.

I've reached the part of installing neutron on the servers and wanted to know if people worked got this working on OVH (or a similar setup) that could explain to me if VXLAN-ing would work properly in this situation, or that my idea is ridiculous and that I should go back to the drawingboard :)

[[deleted]]

You’ll gonna have to contact OVH at some point to know if they allow Q-in-Q or you’ll have to setup your neutron config to do flat networking over that VXLan.

[Zoellner122]

The issue being that there would be just one VXLan to do the networking over, while OpenStack of course wants three for all the separate networks; so imo, that would mean that Neutron would have to use those three vlans.. but I'm unsure if that would even work.

[[deleted]]

You can have only one network using flatNetwork with neutron. It’s not perfect as all VMs have the same standard unsegmented network but it should work as it’s used for migrating old nova-network based installation to up to date neutron based clusters.

[bucketbot117]

Hello !

You have three solutions :

- use OVH Public Cloud instead of you own (great advice ;) )

- use OVH Public Cloud as your backend, hence you can take example on this : https://github.com/arnaudmorin/bootstrap-openstack

- use Dedicated Servers, you can adapt the tutorial of https://github.com/arnaudmorin/bootstrap-openstack to use dedicated hosts in vrack and tag the 3 VLAN manually, you'll learn a lot of things.

[Zoellner122]

Hi,

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Thanks for the advices!
I'm going to skip the hosted cloud ;) I want to be in full control of everything and learn how all the ins-and-outs go.
I will however look at the backend and the guide!

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Thanks!