Open Stack

Excerpts from Jeff Peeler's message of 2015-09-17 20:07:00 -0700:
> On Wed, Sep 16, 2015 at 5:03 PM, Clint Byrum <clint at fewbar.com> wrote:
> 
> > Excerpts from Andrew Bogott's message of 2015-09-16 10:03:48 -0700:
> > > My users are mostly happy with VMs, but I get occasional requests for
> > > physical hardware in order to host databases, run performance tests,
> > > etc.  I'd love to rack a dozen small servers and graft the ironic
> > > service onto my existing cloud in order to fulfill these sporadic
> > > needs.  I'm given pause, though, by this doc section:
> > >
> > >
> > http://docs.openstack.org/developer/ironic/deploy/install-guide.html#configure-compute-to-use-the-bare-metal-service
> > >
> > > For example, this:
> > >
> > >      compute_driver=nova.virt.ironic.IronicDriver
> > >
> > >
> > > That would have me changing nova settings in such a way that would
> > > clearly make nova /only/ support bare-metal, disabling its
> > > virtualization facilities.  Does that mean that bare metal is really an
> > > either/or proposition, or is there some way to make bare metal and virt
> > > services coexist on a single nova installation?  Or is there an
> > > in-between option that involves installing a second nova stack on
> > > different nodes with a different config?
> > >
> > > -- Bonus Question --
> > >
> > > I'm still using nova-network.  Is anyone using ironic without neutron?
> > > Or, if not, is that at least theoretically possible?
> > >
> >
> > Yes, you need to use host aggregates. You would put the ironic compute
> > hosts into an aggregate, and all of the other compute hosts into another,
> > and then have the extra_specs in the flavor set to whichever aggregate
> > you want the instance to go to.
> >
> > This can definitely get a little tricky with the networking if you're
> > using overlays, since Ironic can't really attach a hardware node to a
> > software managed L2 network, but you can just make sure users understand
> > which networks will be available on which flavors and that should work.
> >
> 
> The response I got a few days ago was to use host aggregates with the
> hypervisor_type property for choosing where to start the instance:
> http://lists.openstack.org/pipermail/openstack-dev/2015-September/073530.html
> 
> As you can tell from my original post, I'm not an authority on Ironic. But
> I've seen no mention of Ironic supporting nova networking anywhere.

Oops I missed the nova-network part.

So no, nova-network is probably not going to work. It's time to migrate
anyway, nova-network is going away. Worst case you deploy a new region
with neutron and ironic and migrate your VM workloads to that.