Converting rewrite rules

A REDIRECT TO A MAIN SITE

PEOPLE WHO DURING THEIR SHARED HOSTING LIFE USED TO CONFIGURE EVERYTHING USING ONLY APACHE’S .HTACCESS FILES, TRANSLATE USUALLY THE FOLLOWING RULES:


RewriteCond %{HTTP_HOST} nginx.org

RewriteRule (.*) http://www.nginx.org$1

in something like this:

server {

listen 80;

server_name www.nginx.org nginx.org;

if ($http_host = nginx.org) {

rewrite (.*) http://www.nginx.org$1;

}

…

}

This is a wrong, cumbersome, and ineffective way. The right way is to define a separate server for nginx.org:

server {

listen 80;

server_name nginx.org;

rewrite ^ http://www.nginx.org$request_uri?;

}

server {

listen 80;

server_name www.nginx.org;

…

}

Another example, instead of backward logic: all that is not nginx.com and is not www.nginx.com:

RewriteCond %{HTTP_HOST} !nginx.com

RewriteCond %{HTTP_HOST} !www.nginx.com

RewriteRule (.*) http://www.nginx.com$1

you should define just nginx.com, www.nginx.com, and anything else:

server {

listen 80;

server_name nginx.com www.nginx.com;

…

}

server {

listen 80 default_server;

server_name _;

rewrite ^ http://nginx.com$request_uri?;

}

CONVERTING MONGREL RULES

Typical Mongrel rules:

DocumentRoot /var/www/myapp.com/current/public

RewriteCond %{DOCUMENT_ROOT}/system/maintenance.html -f

RewriteCond %{SCRIPT_FILENAME} !maintenance.html

RewriteRule ^.*$ %{DOCUMENT_ROOT}/system/maintenance.html [L]

RewriteCond %{REQUEST_FILENAME} -f

RewriteRule ^(.*)$ $1 [QSA,L]

RewriteCond %{REQUEST_FILENAME}/index.html -f

RewriteRule ^(.*)$ $1/index.html [QSA,L]

RewriteCond %{REQUEST_FILENAME}.html -f

RewriteRule ^(.*)$ $1/index.html [QSA,L]

RewriteRule ^/(.*)$ balancer://mongrel_cluster%{REQUEST_URI} [P,QSA,L]

should be converted to

location / {

root /var/www/myapp.com/current/public;

try_files /system/maintenance.html

$uri $uri/index.html $uri.html

@mongrel;

}

location @mongrel {

proxy_pass http://mongrel;

}

Converting rewrite rules