How to convert existing Openstack clouds into Cells?
Hi,
I currently have 3 independent Openstack installations running in a lab. They each live on their own networks, although the public endpoints of each deployment are rotatable.
Is it possible to convert these three existing deployments into cells, so I can use a single horizon/keystone/glance across all 3? I've had a look at the Openstack documentation, but it isn't overly clear in the deployment architecture or what is required.
Also in terms of HA - is each child cell considered a full deployment in it's own right, i.e. would you still expect it to have 3 controller nodes (with everything except glance, horizon etc). Is it possible to spread the HA across cells, so if services in one cell fail, they can fail over to another cell?