Nginx reverse proxy rewrite to hide app name

Question

This question may be asked many times, I have been reading but still can't get what I want.

I have an application running in http://172.17.1.10:8080/myapp I would like to setup nginx reverse proxy accessing the application using http://sub.domain.com only , hidding "myapp" in the address bar.

My current setting is:

server{
        listen 80;
        server_name sub.domain.com;
        location /myapp {
                rewrite ^/myapp(.*) /$1 break;
                proxy_pass http://172.17.1.10:8080;
                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;
                include /etc/nginx/proxy_params;
        }

}

But I keep viewing the Nginx index page with http://sub.domain.com, and http://sub.domain.com/myapp the tomcat index page. What am I missing?

score 1 · Answer 1 · answered Dec 07 '14 at 04:29

1

Change these three lines should fix you:

location /myapp {
            rewrite ^/myapp(.*) /$1 break;
            proxy_pass http://172.17.1.10:8080;

To:

location / {
            proxy_pass http://172.17.1.10:8080/myapp;

answered Dec 07 '14 at 04:29

xeon

3,806
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18

I first tried that, but it just redirect to sub.domain.com/myapp, and "myapp" will still be part of url – Yichaoz Dec 07 '14 at 04:36
You need to follow the redirects and find out why, my suggestion does not included redirects. Did you remove the rewrite? – xeon Dec 07 '14 at 04:38
I did exactly what you mentiones, removed the locationand the rewrite line. now when I type sub.domain.com it automatically redirect to sub.domain.com/myapp (and also with error "myappmyapp not found" ) – Yichaoz Dec 07 '14 at 04:46
You could try adding a forward slash after /myapp in proxy_pass. But it seems to me like your myapp or something else is redirecting requests. – xeon Dec 07 '14 at 08:00

Xavier Lucas · Accepted Answer · 2014-12-07T19:07:27.190

When you change the content of the URI being processed within a location block containing a proxy_pass directive then you need to handle Location header rewrites with proxy_redirect :

In some cases, the part of a request URI to be replaced cannot be determined:

When location is specified using a regular expression. In this case, the directive should be specified without a URI.

When the URI is changed inside a proxied location using the rewrite directive, and this same configuration will be used to process a request (break).

But in your case there's no reason to use a rewrite because nginx already handles this in the proxy_pass directive while adding an URI prefix:

If the proxy_pass directive is specified with a URI, then when a request is passed to the server, the part of a normalized request URI matching the location is replaced by a URI specified in the directive.

Also you need to remove the proxy_redirect directive so nginx can rewrite Location headers using the proxy_pass URI prefix as a pattern and the location prefix as a replacement.

So simply use this :

server {

    server_name sub.domain.com;

    location / {
            proxy_pass http://172.17.1.10:8080/myapp/;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            include /etc/nginx/proxy_params;
    }

}

I get infinite redirect loop... I think something else is redirecting it... — Yichaoz, Dec 07 '14 at 19:17
@Kossel Check you backend replies, it doens't come from this nginx configuration (except if your include directive imports something inappropriate). — Xavier Lucas, Dec 07 '14 at 19:21
by default the app is checked by spring Security and will redirect to /login or /home I think the further problem is not nginx related... thanks — Yichaoz, Dec 07 '14 at 19:47

Nginx reverse proxy rewrite to hide app name

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