Open Stack

Hi Joe,

Thanks for Q1. About Q2, I more think about keystone instances and each has
its own storage and the keystones are interconnected and their data are
replicated. The DB, in your suggestion, looks like single point of failure to me.

Thanks for your time

     Pat

On Mon, 27 Aug 2012 09:46:41 -0700, Joseph Heck wrote
> Hi Pat,
> 
> On Aug 27, 2012, at 8:09 AM, pat <pat at xvalheru.org> wrote:
> > I have two questions regarding OpenStack Keystone:
> > 
> > Q1) The Folsom release supports domains. The domain can contain more tenants
> > and tenant cannot be shared between domains. Is this right? I think so, but
> > want to be sure.
> 
> I'm afraid it doesn't. We didn't make sufficient progress with the 
> V3 API (which is what incorporates domains) to include that with the 
> Folsom release. We expect this to be available with the grizzly release.
> 
> > Q2) Is it posible to have a “cluster” of the Keystones to avoid Keystone to be
> > a bottleneck? If so, could you point me to a “tutorial”? Or did I missed
> > something important?
> 
> If by "cluster" you mean multiple instances to handle requests, then 
> absolutely - yes. For this particular response, I'll assume you're 
> using a SQL backend for Keystone. Generally you maintain a single 
> "database" - wether that's an HA cluster or a single instance, and 
> any number of Keystone service instances can point to and use that.
> 


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