On Sat, Aug 01, 2009 at 04:26:03AM +1000, Jeff Waugh wrote:

> Hi all,
>
> Here's a handy config snippet to permanently redirect to a canonical server
> name, generically (ie. without needing to repeat yourself in every config).
>
>
> /etc/nginx/canonical_hostname:
> if ( $host != $server_name ) {
> rewrite ^(.*)$ $scheme://$server_name$1 permanent;
> }
>
>
> /etc/nginx/sites-enabled/example.com:
> server {
> listen 10.0.0.1:80;
> server_name www.example.com example.com;
> include canonical_hostname;
> ...
>
>
> Because the included block in canonical_hostname is totally generic, you can
> include it in whichever server block you wish. It automagically chooses the
> correct scheme, host (based on the first element of server_name) and path...

This snippet is probably handy, however, it will run useless regex for every
request for www.example.com. Using separate example.com server is better
for perfomance reason.


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