On Wed, Aug 05, 2009 at 12:16:10PM +0100, Anselm R Garbe wrote:

> Hi there,
>
> I switched to nginx 0.7.61 recently and came across some odd vhost issues:
>
>
> 1. Let's imagine the following cgi script:
>
> --
> #!/bin/sh
> echo Content-Type: text/plain
> echo
> env | grep SERVER_NAME
> --
>
> that is served using fcgiwrap as follows in the nginx.conf:
>
> server {
> listen 8080;
> server_name a.dom.tld dom.tld b.dom.tld c.dom.tld;
> location / {
> root /; # html results in 403
> fastcgi_pass unix:/var/run/fastcgi/test.sock;
> fastcgi_param QUERY_STRING $query_string;
> fastcgi_param REQUEST_METHOD $request_method;
> fastcgi_param CONTENT_TYPE $content_type;
> fastcgi_param CONTENT_LENGTH $content_length;
>
> fastcgi_param SCRIPT_NAME
> /usr/local/bin/printenv;
> fastcgi_param REQUEST_URI $request_uri;
> fastcgi_param DOCUMENT_URI $document_uri;
> fastcgi_param DOCUMENT_ROOT $document_root;
> fastcgi_param SERVER_PROTOCOL $server_protocol;
>
> fastcgi_param GATEWAY_INTERFACE CGI/1.1;
> fastcgi_param SERVER_SOFTWARE nginx/$nginx_version;
>
> fastcgi_param REMOTE_ADDR $remote_addr;
> fastcgi_param REMOTE_PORT $remote_port;
> fastcgi_param SERVER_ADDR $server_addr;
> fastcgi_param SERVER_PORT $server_port;
> fastcgi_param SERVER_NAME $server_name;
> }
> }
>
> The result is always the first server_name entry, regardless if one
> access dom.tld, c.dom.tld or b.dom.tld -- it's always a.dom.tld in the
> given example. So I suspect that $server_name is incorrect. A bug?
>
> (I currently have a separate server { ... } section for each
> server_name, but I think that's not very great).

fastcgi_param SERVER_NAME $host;

> 2. A second issue is, that the above cgi script is only executed
> correctly for me if the server setting:
>
> root /;
>
> is given. If the root is anything else, I always get 403 errors, why
> is that? Is this a bug?

I do not know. Probably, fcgiwrap concatenates DOCUMENT_ROOT and SCRIPT_NAME.

> 3. Finally let's assume I have two domains dom1.tld and dom2.tld and
> let's imagine a bunch of sub-domains each:
>
> a.dom1.tld, b.dom1.tld, a.dom2.tld, and b.dom2.tld
>
> Now my requirement is, that [{a,b}.]dom2.tld is ALWAYS redirected to
> [{a,b}.]dom1.tld. My current solution is this:
>
> server {
> server_name dom2.tld;
> rewrite ^(.*) http://dom1.tld$1 permanent;
> }
>
> server {
> server_name a.dom2.tld;
> rewrite ^(.*) http://a.dom1.tld$1 permanent;
> }
>
> server {
> server_name b.dom2.tld;
> rewrite ^(.*) http://b.dom1.tld$1 permanent;
> }
>
> How can I achieve this with a simpler setup?

server {
server_name ~^(.*dom)2.tld;
set $name $1;
rewrite ^ http://${name}1.tld$request_uri? permanent;
}


--
Igor Sysoev
http://sysoev.ru/en/