How to recover linstor-controller node?

[Adam Goryachev]

Possibly a dumb question, but for a number of reasons, I have lost my 
linstor-controller node. I still have all other nodes up and running, 
but am missing any backup of the controller database. The main issue is 
that while the data is still available (both linstor-controller and 
backup systems) but both are offline for at least the next week.

So, is there any other method to "re-create" or otherwise setup a 
controller on another node?

I know, would be a good idea to setup some HA and/or some regular DB 
backup and replication to other nodes, but in the meantime, what are the 
options to get linstor-controller or at least linstor-satellites all up 
and running?