syncing bhyve instances

[tech-lists]

On 22/01/2018 16:38, Paul Vixie wrote:
> for live sync you'll have to run software inside the guest that knows
> how to properly freeze state. for example if there's a live database of
> any kind you'll want it to be in its quiet state before you sync from
> it. in those situations, i do use rsync.

Yeah, thought it might be this. Sorry I wasn't more clear initially
about the use case.

Basically, the production server is in a datacentre and the reserve
server is on a very fast vdsl service. The reason for the reserve server
is, if the production server fails then I swap DNS to point at the
reserved server and the guests on it without interruption of service.
All guests are running databases (mysql) though they aren't especially
busy. So I guess the best bet would be mysql replication for the
databases and rsync for everything except mysql?

thanks everyone who took the time to answer

-- 
J.