Comment 60 for bug 1789177

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Corey Bryant (corey.bryant) wrote : Re: RabbitMQ fails to synchronize exchanges under high load

To recreate just upgrade to the new python-oslo.messaging on all n-ovs units, restart neutron-openvswitch-agent, and instance creation will fail. The problem is the other neutron services on neutron-api and neutron-gateway are using the old olso.messaging code. Once neutron-api and neutron-gateway are upgraded and services restarted, instances can be created again.