Description
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I set up 3 controllers and 3 compute nodes. My system cannot work well when 1 rabbit node in cluster rabbitmq is down, cannot launch instances. It stucked at scheduling.

Steps to reproduce
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Openstack nodes point rabbit://node1:5672,node2:5672,node3:5672//
* Reboot 1 of 3 rabbitmq node.
* Create instances then it stucked at scheduling.

Workaround
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Point to rabbitmq VIP address. But We cannot share the load with this solution. Please give me some suggestions. Thank you very much.