Open Stack

Hi Jay,

If you have multiple regions and availability zones returning the same
> service types  -- e.g. compute -- and you point your nova|quantum|cinder|*
> *glanceclient to a Keystone endpoint in one of those zones that is
> sharing the identity database with other zones, then the Keystone endpoint
> will return the service catalog for all of the regions and zones. At this
> point, the X-client will happily go to the first matching service type
> endpoint for its service type, irrespective of which region or availability
> zone you actually originally hit.
>

Just a quick note that this is only a problem in Horizon (as of Folsom - I
haven't verified in Grizzly).

I'm not sure about Availability Zones, but Regions are a bit easier to work
with in this scenario. All command-line-based tools acknowledge the
OS_REGION environment variable. If OS_REGION is set, Keystone will return
the endpoints for the given region.

Horizon, though, will return all endpoints in all regions regardless of the
region you're in.

Thanks,
Joe


-- 
Joe Topjian
Systems Architect
Cybera Inc.

www.cybera.ca

Cybera is a not-for-profit organization that works to spur and support
innovation, for the economic benefit of Alberta, through the use
of cyberinfrastructure.
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