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[Samuel Winchenbach <swinchen@xxxxxxxxx>]

Hi All,

I am trying (keyword trying) to get a highly available cluster going.
 Currently I have most of the services needed (mysql, rabbitmq, glance,
keystone, etc.) configured as resources in pacemaker and that works quite
nicely.   Now I need to figure out networking.

I have 2 servers with 2 NICs, one NIC is a public interface and the other
is on an internal network.  This is likely to increase to three servers in
the near future to help with quorum/split brain issues.  I plan on these
servers being a combination control/networking hosts.  On the internal
network I have several compute nodes.

What are some of my networking options?

Quantum seems out because it looks like it requires 3 NICs.  I initially
tried adding my public IP to external bridge interface hoping I could get
away with 2 NICs but I could't get it to work.  If someone could explain
why quantum requires 3 interfaces that would be great.

That leaves nova-network.   Seeing my compute nodes are behind the
control/networking nodes does that mean multi_host is out of the question?
  If so that really only leaves creating a VIP in pacemaker and moving it
around with nova-network with pacemaker correct?

Thanks all for reading and any suggestions you may have!
Sam