Comment 18 for bug 1682423

https://review.openstack.org/#/c/427782/ was a change that made it into 15.0.0 Ocata GA.

However, looking at the code:

- we create an instance mapping record during instance create:

https://github.com/openstack/nova/blob/15.0.0/nova/compute/api.py#L1006

- assuming you make it this far (and your nova-api service version is >=15

https://github.com/openstack/nova/blob/15.0.0/nova/compute/api.py#L2271

We get the instance mapping for the instance, created above. The instance might not be in a cell at this point though.

- if the instance is not yet in a cell, we get the representation from the build request:

https://github.com/openstack/nova/blob/15.0.0/nova/compute/api.py#L2281

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The only other thing I remember affecting that nova-osapi_compute service version check in Ocata was if people are running nova-api under uwsgi or mod_wsgi, as the API service version isn't set then, but running the API under uwsgi wasn't supported in Ocata anyway - so can people confirm that is not how they are running the API?