@dunlix either way, if you don't have a config.json, it starts the web installer:
Importing from Discourse to NodeBB
I've been recently looking into NodeBB and I'm now considering switching my current Discourse forum to NodeBB. Both are self hosted.
However, I haven't been able to figure out a way to do that successfully.
I've tried using https://github.com/akhoury/nodebb-plugin-import and https://github.com/BenLubar/nodebb-plugin-import-discourse to no avail.
I'm not well versed in SQL (Postgre or Mongo), so the instructions on https://community.nodebb.org/topic/6818/switching-from-discourse/4 are a bit challenging - especially where you need to prefix all of the table names.
If you have the time to help a beginner, I'd be grateful!