openstack team mailing list archive

[Lars Kellogg-Stedman <lars@xxxxxxxxxxxxxxxx>]

On Mon, Oct 22, 2012 at 01:54:11PM +0200, Gary Kotton wrote:
> Can you please explain the problems that you had with qpid?

OpenStack components were periodically losing touch with each other.
Requests to boot/delete an instance, for example, would never make it
as far the compute hosts.  They would get stuck scheduling.

Initially we thought this was exclusively a problem with the network
firewall infrastructure (there was a default 1 hour idle connection
timeout), but reconfiguring our OpenStack environment to remove the
firewalls from the picture did not resolve this problem.

Since replacing qpid with rabbitmq, we have not had a single
recurrence of this behavior.

-- 
Lars Kellogg-Stedman <lars@xxxxxxxxxxxxxxxx>  |
Senior Technologist                           | http://ac.seas.harvard.edu/
Academic Computing                            | http://code.seas.harvard.edu/
Harvard School of Engineering                 |
  and Applied Sciences                        |