HAProxy high availability

[adamkrone]

This should be implemented using something like keepalived.

Reference:
http://behindtheracks.com/2014/04/redundant-load-balancers-haproxy-and-keepalived/

[adamkrone]

This is currently implemented, however it's pending testing on a suitable environment. It works for the most part in vagrant, however when restarting a server , keepalived usually ends up failing. Restarting the keepalived service does, however, fix the issue.

This is probably only a vagrant issue, due to the way networking works, however it does need further investigation.