AMQP and Nova¶ AMQP is the messaging technology chosen by the OpenStack cloud. The AMQP broker, default to Rabbitmq, sits between any two Nova components and allows them to communicate in a loosely coupled fashion. More precisely, Nova components (the compute fabric of OpenStack) use Remote Procedure Calls (RPC hereinafter) to communicate to one another; however such a paradigm is built atop the p