@@ -197,6 +197,22 @@ A stream of activity ensues. When complete you will see a summary of

 to poke at your shiny new OpenStack. The most recent log file is

 available in ``stack.sh.log``.

+Starting in the Ocata release, Nova requires a `Cells v2`_ deployment. Compute

+node services must be mapped to a cell before they can be used.

+

+After each compute node is stacked, verify it shows up in the

+``nova service-list --binary nova-compute`` output. The compute service is

+registered in the cell database asynchronously so this may require polling.

+

+Once the compute node services shows up, run the ``./tools/discover_hosts.sh``

+script from the control node to map compute hosts to the single cell.

+

+The compute service running on the primary control node will be

+discovered automatically when the control node is stacked so this really

+only needs to be performed for subnodes.

+

+.. _Cells v2: https://docs.openstack.org/nova/latest/user/cells.html

+

 Cleaning Up After DevStack

 --------------------------