Comment 13 for bug 1359082

The current fuel solution is worse than the default neutron deployment. The custom approach it takes to restrict routers to one agent makes neutron unusable at any kind of real deployment scale. One tenant with heavy East-West traffic between networks could block up the entire openstack deployment since one node is turned into a bottleneck for what could easily be thousands of VMs and networks.

You can query for dead agents with routers assigned to them and reschedule them to alive agents via the current neutron database. There isn't a need to keep only one agent online instead of all of them.