Where do we support running tripleoclient

Hi all, Pretty much as the subject says. Do we specify where we support running tripleoclient? In theory it should run anywhere with the correct environment variables. However, as far as I understand most users run it on the undercloud itself. Is this something we have a position on? To give a little more context, this is relevant when replacing Mistral with Ansible. Can we assume that we are running ansible only against localhost or do we need to create an inventory for the undercloud? Cheers, Dougal