Hi All, When I was doing a Swift/Keystone only install with DevStack I used the following in my localrc disable_all_services enable_service key swift mysql Then stack.sh paused with the error message ERROR: at least one rpc backend must be enabled, set one of 'rabbit', 'qpid', 'zeromq' via ENABLED_SERVICES. So I blindly added rabbit to enable_service and the error went away. Then I did the PR https://review.openstack.org/#/c/22333/ to change the DevStack README.md file. But then I got the question, is rabbit really necessary? Does anyone know if a Swift/Keystone only install requires AMQP? Thanks, Everett -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack/attachments/20130220/9788c6e0/attachment.html>