[Openstack-operators] Small openstack

Antonio Messina antonio.s.messina at gmail.com
Thu Jan 8 10:36:42 UTC 2015

Hi all, I'm also interested in this setup.

On Fri, Dec 26, 2014 at 12:31 AM, George Shuklin
<george.shuklin at gmail.com> wrote:
> Report on progress so far:
> I was able to fix policies (nova/neutron) to allow tennants to plug to 'own'
> external networks, found and report few bugs about error messaging in ML2,
> got working dhcp-agent (on external network! haha). Right now it works with

Can you please be a bit more specific on the issues and bug reports? I
did some testing on this kind of setup, and as far as I understand
Neutron in Juno does not allow you to change the policy for one
specific network, so the best I could do is to allow *any* tenant to
plug a port on *any* external network, while in my setup I would like
to only allow tenants to plug an interface on one specific external
network (I will create different "external" networks of this kind)

I wrote a short blogpost with the configuration I made:


> Up to now it looks really great from infrastructure (ops) point of view: no
> SPoF on networks nodes, no NAT, no confusing local addresses with floatings.
> Each instance receive white IP and use it as it is. All routing is offloaded
> to network hardware. Cool oldstyle robust networking, less non-computing
> (not paying) hosts, less moving parts. It may be not so great from point of
> view of 'bleeding edge' part of openstack (heat/LB/etc), but I do not want
> my infrastructure to bleed...

I really like this design too, very KISS-y


antonio.s.messina at gmail.com
antonio.messina at uzh.ch                     +41 (0)44 635 42 22
S3IT: Service and Support for Science IT   http://www.s3it.uzh.ch/
University of Zurich
Winterthurerstrasse 190
CH-8057 Zurich Switzerland

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