openstack team mailing list archive

["Kevin L. Mitchell" <kevin.mitchell@xxxxxxxxxxxxx>]

On Fri, 2012-06-15 at 20:54 -0400, Lars Kellogg-Stedman wrote:
> Thanks for the reply, makes sense.  Just to make sure I understand
> things, it sounds like Nova does not currently query Keystone for
> endpoints and continues to rely on explicit configuration (or to
> rephrase your answer, "the reason these options have not gone away is
> because Nova does not yet have the necessary support for Keystone").
> Is that approximately correct?

The problem with the Keystone endpoints is that you have to make a query
to Keystone to get them.  We want to reduce the number of hits we make
on Keystone, not increase them—there are already too many as it is.
Thus, I suspect that nova may not even use the Keystone endpoints.  It
*does* support image URLs, however.  Thus, you use the options to
configure the default glance endpoint, and if you want to hit another
glance, you simply give a URL to the desired image rather than a simple
identifier.

(My comments about the support for endpoints in this email may differ
from my previous comments; chalk that up to further reflection on the
problem being solved…)
-- 
Kevin L. Mitchell <kevin.mitchell@xxxxxxxxxxxxx>