According to the docs,
Upgrading - NodeBB Documentation
On typical installs of Redis, the main database is found at
and the file actually is there.
So, what is the dump.rdb in the nodebb root dir?
@djcyry Apache can work too with reverse proxy's if you feel more comfortable with that. Its also documented in the current NodeBB documentation. So long you host the 2 NodeBB forums on different ports it will work without any problems.