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=encoding utf-8
=head1 Name
converting_rewrite_rules - Converting rewrite rules
=head1 A redirect to a main site
People who during their shared hosting life used to configure
I<everything> using I<only> ApacheE<rsquo>s .htaccess files,
usually translate the following rules:
RewriteCond %{HTTP_HOST} example.org
RewriteRule (.*) http://www.example.org$1
to something like this:
server {
listen 80;
server_name www.example.org example.org;
if ($http_host = example.org) {
rewrite (.*) http://www.example.org$1;
}
...
}
This is a wrong, cumbersome, and ineffective way.
The right way is to define a separate server for C<example.org>:
server {
listen 80;
server_name example.org;
return 301 http://www.example.org$request_uri;
}
server {
listen 80;
server_name www.example.org;
...
}
B<NOTE>
On versions prior to 0.9.1, redirects can be made with:
rewrite ^ http://www.example.org$request_uri?;
=head1
Another example.
Instead of the E<ldquo>upside-downE<rdquo> logic E<ldquo>all that is not
C<example.com> and is not C<www.example.com>E<rdquo>:
RewriteCond %{HTTP_HOST} !example.com
RewriteCond %{HTTP_HOST} !www.example.com
RewriteRule (.*) http://www.example.com$1
one should simply define C<example.com>, C<www.example.com>,
and E<ldquo>everything elseE<rdquo>:
server {
listen 80;
server_name example.com www.example.com;
...
}
server {
listen 80 default_server;
server_name _;
return 301 http://example.com$request_uri;
}
B<NOTE>
On versions prior to 0.9.1, redirects can be made with:
rewrite ^ http://example.com$request_uri?;
=head1 Converting Mongrel rules
Typical Mongrel rules:
DocumentRoot /var/www/myapp.com/current/public
RewriteCond %{DOCUMENT_ROOT}/system/maintenance.html -f
RewriteCond %{SCRIPT_FILENAME} !maintenance.html
RewriteRule ^.*$ %{DOCUMENT_ROOT}/system/maintenance.html [L]
RewriteCond %{REQUEST_FILENAME} -f
RewriteRule ^(.*)$ $1 [QSA,L]
RewriteCond %{REQUEST_FILENAME}/index.html -f
RewriteRule ^(.*)$ $1/index.html [QSA,L]
RewriteCond %{REQUEST_FILENAME}.html -f
RewriteRule ^(.*)$ $1.html [QSA,L]
RewriteRule ^/(.*)$ 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;
}
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