I have spent the day wrestling with a vanilla Ubuntu 14.04 and installing LEMP, a couple of times.
I had a working install of BB on another server (LAMP) so to save time I (possibly naïvely) copied the BB file structure in its entirety from the old server to the new server, chgrp'd from root/root to www_data/www_data, imported the SQL dump from the old server to the new one, and stood well back.
And to my surprise, it worked! at least, mostly.
I don't know whether the issue I'm having is to do with the way I've "installed" it, maybe permissions, or something else, maybe to do with the fact it's nginx, and I don't know nginx.
The issue (and it's the only issue so far..) is that when I try to upload an Avatar, I get nothing.. nada. It looks like it's going to upload, but nothing happens. I've tried to find the directory they are supposed to upload into but I can't. Is it a case of tracking it down and applying more liberal permissions?
Or, should I trash this installation and start again? I could dump the new database out (it's had significant changes this afternoon), install BB afresh, then import the data from SQL again.
The final thing I would reiterate is, I am an Apache person. I have never dealt with nginx before, or the weird PHP flavour it seems to need. So perhaps it's an issue peculiar to nginx.
Final final thing... the more I use the software, the better I am finding it. The Search box in the admin interface is just superb. Great work, really.
Thanks