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Hi nova and keystone devs,

We have a use case where we want to schedule a bunch of projects to specific compute nodes only.
The aggregate_multitenancy_isolation isn’t viable because in some cases we will want thousands of projects to go to some hardware and it isn’t manageable/scaleable to do this in nova and aggregates. (Maybe it is and I’m being silly?)

The best way I can think of doing this is to tag the keystone projects (or possibly set a custom property) and then write a custom nova scheduler filter to use the tag/property.
The only issue I have is that tags/properties aren’t available to nova in it’s RequestContext.

Can you think of a better way or a way that would work now?

If this does in fact sound like a good way forward does authtoken middleware send this data downwards so nova could consume?

If it does I assume it would be then as simple as adding these to the nova RequestContext?


Thanks,
Sam