[Tenzer]

It's good to hear it was of use to somebody :)

I know you can use a map in Nginx to do what you ask for, as long as you have a list of domains already: http://nginx.org/en/docs/http/ngx_http_map_module.html#map. I can only imagine it also being possible to make fully dynamic, I just don't have a clear way of doing it in mind right now.

[sprobertson]

Lua + Redis is a nice way to do this, I have a small project https://github.com/spro/simon that does dynamic routing and load balancing based on Hostname -> IP:Port sets in Redis. Adding a new route is as simple as:

  sadd backends:hnapi.dev 192.168.0.42:10555

[Tenzer]

Neat! I want to get started on some Lua scripting as well, probably first to just get a bunch of metrics out of Nginx via StatsD. There's access to a whole bunch of numbers via Lua that you otherwise can't get out from the stub_status page.

[corobo]

The sibling comment to this pointed out the $host variable. I imagine something along the line of proxy_pass http://$host.internaldomain; or something on that line.

I'll have to look into it further :)