Rails Nginx: multiple applications

Question

I have two nginx configs for applications:

1) Rails application

upstream app {
  server unix:/home/deploy/railsapp/shared/tmp/sockets/puma.sock fail_timeout=0;
}

server {
  listen 80;
  server_name api.example.com;

  root /home/deploy/railsapp/current/public;

  try_files $uri/index.html $uri @app;

  location / {
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header Host $host;
    proxy_redirect off;
    proxy_http_version 1.1;
    proxy_set_header Connection '';
    proxy_pass http://app;
  }

  location ~ ^/(assets|fonts|system)/|favicon.ico|robots.txt {
    gzip_static on;
    expires max;
    add_header Cache-Control public;
  }

  error_page 500 502 503 504 /500.html;
  client_max_body_size 4G;
  keepalive_timeout 10;
}

2) Static html/js application

server {
  listen 81;
  server_name  client.example.com;
  root /home/deploy/clientapp;

  location / {
    proxy_set_header X-Forwarded-Proto $scheme;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header Host $host;
    proxy_redirect off;
    proxy_http_version 1.1;
    proxy_set_header Connection '';
   # proxy_pass http://app;
  }

  location ~ ^/(assets|fonts|system)/|favicon.ico|robots.txt {
    gzip_static on;
    expires max;
    add_header Cache-Control public;
  }
}

The problem is both addresses api.example.com and api.example.com open the same application (for api.example.com)

@PeterS It's just an example without original addresses. Both addresses are subdomains — Pavel
– Pavel, Commented Mar 23, 2016 at 8:11

Martijn Casteel · Accepted Answer · 2016-03-23 09:32:35Z

2

Some basic tutorial on nginx config; https://www.digitalocean.com/community/tutorials/how-to-configure-the-nginx-web-server-on-a-virtual-private-server. You should use a proxy with rails applications not with static html application.

server {
  listen 80; #should also be 80
  server_name  client.example.com;

  root /home/deploy/clientapp;
  index index.html index.htm;

  location / {
     try_files $uri $uri/ /index.html;
  }

  location ~ ^/(assets|fonts|system)/|favicon.ico|robots.txt {
    gzip_static on;
    expires max;
    add_header Cache-Control public;
  }
}

To test the configuration you can perform nginx -t and should reload using nginx -s reload to use the new configuration? As stated before this problem has nothing to do with rails, it is just nginx configuration.

The server_name is leading on which website is returned on a request, if there is no default_server it will return the last website loaded into nginx configuration.

edited Mar 23, 2016 at 9:32

answered Mar 23, 2016 at 8:42

Martijn Casteel

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8 Comments

Pavel Over a year ago

I tried to listen the same port (80). In this case both addresses open application /home/deploy/clientapp which should be only on the client.example.com

Martijn Casteel Over a year ago

@PavelBabin that's because the proxy has nothing to do in your static website configuration! Do you have both configuration linked in de sites-enabled directory? It should always be port 80, because that's where web application run at.

Pavel Over a year ago

I have two separate config files for backend and client. I removed proxy settings from client config and result is the same

Martijn Casteel Over a year ago

Are both config files linked in /etc/nginx/sites-enabled/. If you did you reload the configuration nginx -s reload or does it have errors nginx -t?

Pavel Over a year ago

1) both configs are in /etc/nginx/sites-enabled/. 2) yes, i'm reloading nginx like sudo service nginx restart. 3) no, there is no errors and syntax is ok

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