openstack-manuals/doc/config-reference/source/shared-file-systems/rpc.rst

Configure the RPC messaging system

OpenStack projects use an open standard for messaging middleware known as AMQP. This messaging middleware enables the OpenStack services that run on multiple servers to talk to each other. The OpenStack common library project, oslo, supports three implementations of AMQP: RabbitMQ, Qpid, and ZeroMQ.

The following tables contain settings to configure the messaging middleware for the Shared File System service: