Nginx, Weblogic, and reverse proxy by path

nginxreverse-proxyweblogic

I'm having issues getting my reverse proxy to work when using a path in nginx. What I am trying to do is have one address for an application, and dictate the environment with the path. Depending on the path, it would point to a different server. I'm able to get the reverse proxy working when using a direct link, but using a path is getting a 404 error.

app.foo.bar/dev = 404 error
devapp.foo.bar = success

What have I done wrong on app.foo.bar/dev ?

Here is the reverse proxy setup that is working, but I'd rather not use:

server  {
  listen  80;   # DEV Application Proxy
  server_name  devapp.foo.bar;
  location  / {
    proxy_pass  http://appserver.foo.bar:7010;
    proxy_set_header    Host            $host;
        proxy_set_header    X-Real-IP       $remote_addr;
        proxy_set_header    X-Forwarded-for $remote_addr;
        port_in_redirect off;
        proxy_redirect   http://appserver.foo.bar:7010/ /;
        proxy_connect_timeout 300;
    }
  }

Here is a portion of what I am wanting to do by using path, but getting 404 error.

# APP Environment Proxy

server {

  listen 80;
  server_name app.foo.bar;
     location /dev {
      proxy_pass http://appserver.foo.bar:7010;
      proxy_set_header    Host            $host;
      proxy_set_header    X-Real-IP       $remote_addr;
      proxy_set_header    X-Forwarded-for $remote_addr;
      port_in_redirect off;
      proxy_redirect     http://appserver.foo.bar:7010 /;
      proxy_connect_timeout 300;

  }
}

I've googled this type of setup, but I'm not able find a solution. Thanks in advance for the any assistance.

Best Answer

When you have proxy_pass http://appserver.foo.bar:7010;, nginx appends the normalized URI to the request URL passed to backend.

So, when you request http://app.foo.bar/dev, the request goes to http://appserver.foo.bar:7010/dev. If your dev server doesn't have this path, then it will return 404, which nginx returns to the client.

If you want all requests starting with http://app.foo.bar/dev to go to http://appserver.foo.bar:7010 such that all rest of the URI is added to the backend server URI, then you can use this configuration:

location ~ ^/dev(.+)$ {
    proxy_pass http://appserver.foo.bar:7010$1$is_args$args;
    ...
}

So, we capture the part after /dev with regex to a variable, and then we add that variable to end of proxy_pass path.

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