Question

I’d like to serve several applications from the same server, reversed-proxied through nginx. I’d like these applications to be available through a single domain name with sub-uris.

e.g.

www.mydomain.com/nodejs
=> caught by nginx listening to port 80 and served through to a node.js app running on port 3001

www.mydomain.com/rails
=> caught by nginx listening to port 80 and served through to a rails app running on port 3002

My first stab is to start with two upstreams:

# /etc/nginx/sites-available/mydomain.com

upstream nodejs {
  server 127.0.0.1:3001;
}

upstream rails {
  server 127.0.0.1:3002;
}

server {
  listen 80 default deferred;

  # What do I put here so that
  # mydomain.com/nodejs is proxied to the nodejs upstream and
  # mydomain.com/rails  is proxied to the rails  upstream ???
}

Does anyone know this or point me in the right direction?

Answer 1

How about:

upstream nodejs {
    server 127.0.0.1:3001;
}

upstream rails {
    server 127.0.0.1:3002;
}

server {
    listen 80;  

    location /nodejs {
        proxy_pass         http://nodejs;
        proxy_redirect     off;
        proxy_set_header   Host             $host;
        proxy_set_header   X-Real-IP        $remote_addr;
        proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
    }

    location /rails {
        proxy_pass         http://rails;
        proxy_redirect     off;
        proxy_set_header   Host             $host;
        proxy_set_header   X-Real-IP        $remote_addr;
        proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
    }

}

or shortly:

server {   
    listen 80;     

    location /nodejs {
        proxy_pass         http://127.0.0.1:3001;
        proxy_redirect     off;
        proxy_set_header   Host             $host;
        proxy_set_header   X-Real-IP        $remote_addr;
        proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
    }

    location /rails {
        proxy_pass         http://127.0.0.1:3002;
        proxy_redirect     off;
        proxy_set_header   Host             $host;
        proxy_set_header   X-Real-IP        $remote_addr;
        proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
    }

}

?

Most of the proxy directives are optional (you probably just need proxy_pass and proxy_redirect) but useful.