Nginx reverse proxy returns incorrect url

I have the following setup:

public, dynamic IP from my ISP, dynamical DNS let's call it public.org
Reverse-proxy (nginx,ubuntu 14.04)
Webservers (nginx,ubuntu 14.04) A,B,C running webapps within my home network, let's call it private.home

My goal is to reach the webservers A.private.home, B.private.home,... from the internet via the reverse-proxy as A.public.org

For server A I have set up the following lines on the reverse proxy:

server{

    listen          80;
    server_name     A.public.org;

    location /{
            proxy_pass http://A.private.home;
    }
}

if I then navigate to http://A.public.org from an outside device, I get a 404, saying that A.private.home could (obviously) not be resolved.

Help would be greatly appreciated.

Michael

Posted 2015-03-16T18:05:46.440

Reputation: 1

Answers

So I now can provide an anser myself now.

The actual problem was a rewrite happening on A.private.home which rewrote http://A.private.home to https://A.private.home. Thanks Dinoosh for getting my attention on the settings of the webapp. After removing that rewrite, everything worked perfectly.

Michael

Posted 2015-03-16T18:05:46.440

Reputation: 1

Please check your domain name is correctly pointed to the server.

use dig command to check your dns record.

dig a A.public.org

Dinoosh

Posted 2015-03-16T18:05:46.440

Reputation: 1

Looks good.

`$ dig A.public.org

; <<>> DiG 9.8.3-P1 <<>> A.public.org
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 40168
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0,        ADDITIONAL: 0

;; QUESTION SECTION:
;A.public.org. IN A

;; ANSWER SECTION:
A.public.org. 58 IN A --somepublicip--

;; Query time: 1489 msec
;; SERVER: X.X.X.X#53(X.X.X.X)
;; WHEN: Tue Mar 17 10:10:33 2015
;; MSG SIZE  rcvd: 60`
 – None  – 2015-03-17T09:14:34.850

check your nginx access.log and error.log to see if it shows any entries when you go to your site from outside device. – None – 2015-03-17T10:02:09.447

Hi, access log shows entries correctly somepublicip --[17/Mar/2015:11:12:07 +0100] "GET / HTTP/1.1" 301 193 "-" "Mozilla/5.0 (iPad; CPU OS 8_1_3 like Mac OS X) AppleWebKit/600.1.4 (KHTML, like Gecko) CriOS/41.0.2272.56 Mobile/12B466 Safari/600.1.4" – None – 2015-03-17T10:14:26.580

can you dig A.private.home from proxy server. If you can try telneting to port 80 of your app servers from proxy server. – None – 2015-03-17T10:23:18.140

both works well. However I should point out, that http://A.private.home automatically redirects to https://A.private.home to protect the user's credentials. (http on the proxy is also just a POC and I will move on to https, as soon as I get things to work properly) – None – 2015-03-17T10:36:43.563