Deploy an additional nova cell v2


Multi cell support is only supported in Stein and later versions.

The different sections in this guide assume that you are ready to deploy a new overcloud, or already have installed an overcloud (min Stein release).


Starting with CentOS 8 and the TripleO Stein release, podman is the CONTAINERCLI to be used in the following steps.

The minimum requirement for having multiple cells is to have a central OpenStack controller cluster running all controller services. Additional cells will have cell controllers running the cell DB, cell MQ and a nova cell conductor service. In addition there are 1..n compute nodes. The central nova conductor service acts as a super conductor of the whole environment.

For more details on the cells v2 layout check Cells Layout (v2)