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On 5/2/2018 11:40 AM, Mathieu Gagné wrote:
> What's the state of caching_scheduler which could still be using those configs?

The CachingScheduler has been deprecated since Pike [1]. We discussed 
the CachingScheduler at the Rocky PTG in Dublin [2] and have a TODO to 
write a nova-manage data migration tool to create allocations in 
Placement for instances that were scheduled using the CachingScheduler 
(since Pike) which don't have their own resource allocations set in 
Placement (remember that starting in Pike the FilterScheduler started 
creating allocations in Placement rather than the ResourceTracker in 
nova-compute).

If you're running computes that are Ocata or Newton, then the 
ResourceTracker in the nova-compute service should be creating the 
allocations in Placement for you, assuming you have the compute service 
configured to talk to Placement (optional in Newton, required in Ocata).

[1] https://review.openstack.org/#/c/492210/
[2] https://etherpad.openstack.org/p/nova-ptg-rocky-placement

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Thanks,

Matt