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
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