On 12/12/2014 09:50 AM, Russell Bryant wrote:
On 12/11/2014 12:55 PM, Andrew Laski wrote:
Cells can handle a single API on top of globally distributed DCs.  I
have spoken with a group that is doing exactly that.  But it requires
that the API is a trusted part of the OpenStack deployments in those
distributed DCs.
And the way the rest of the components fit into that scenario is far
from clear to me.  Do you consider this more of a "if you can make it
work, good for you", or something we should aim to be more generally
supported over time?  Personally, I see the globally distributed
OpenStack under a single API case much more complex, and worth
considering out of scope for the short to medium term, at least.

I do consider this to be out of scope for cells, for at least the medium term as you've said. There is additional complexity in making that a supported configuration that is not being addressed in the cells effort. I am just making the statement that this is something cells could address if desired, and therefore doesn't need an additional solution.

For me, this discussion boils down to ...

1) Do we consider these use cases in scope at all?

2) If we consider it in scope, is it enough of a priority to warrant a
cross-OpenStack push in the near term to work on it?

3) If yes to #2, how would we do it?  Cascading, or something built
around cells?

I haven't worried about #3 much, because I consider #2 or maybe even #1
to be a show stopper here.

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