This, please! I am in the process of trying to set this up and it seems unnecessarily long and complicated. Manually configuring the master and replicas, generating ssl certs etc. Would be amazing to have a quick option to set a database as a master and then select the replica servers for replication and have it magically work.

This could be a big win for Ploi. All of the current managed database options are super expensive for the hardware offered, this could position Ploi as an alternative to a fully managed database, and/or allow Ploi customers to more easily offer their own managed database options.

This would be a really helpful feature. I hope ploi gets it soon :)

Any idea on a timescale for this?

I assume you're looking at using Galera?