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I want to redirect demo.example.com to example.com/my-demo. This is my rewrite rule, but I'm not getting it to work on my production server:

  RewriteCond %{HTTP_HOST} ^demo\.example\.com
  RewriteRule ^(.*)$ /my-demo/$1 [R=301,L]
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4 Answers 4

As it stands, you are redirecting to the same host. ie. demo.example.com/file is redirecting to demo.example.com/my-demo/file, not example.com/my-demo/file, which is going to result in a redirect loop. You need to specify an absolute URL in the RewriteRule substitution:

RewriteEngine On
RewriteCond %{HTTP_HOST} =demo.example.com
RewriteRule ^(.*)$ http://example.com/my-demo/$1 [R=301,L]
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Do you have an ServerAlias demo.example.com for the VirtualHost that has this RewriteRule? If you don't, that is the reason it doesn't work.

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If it's not a ServerAlias but a subdomain, remember to put your .htacces file in the subdomain, not in the main domain directory. Also add "RewriteEngine On" in .htaccess if you did not yet.

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It depends on the way one has configured the subdomain. The same effect can be achieved with both a ServerAlias and separate VirtualHost for the subdomain. –  Tero Kilkanen Jul 4 at 10:39

put this in .htaccess file in you're demo.example.com directory:

RewriteEngine On
RewriteCond %{HTTP_HOST} ^demo\.example\.com [NC]
RewriteRule (.*) http://example.com/demo/$1 [L,R=301]

i.e: demo.example.com is in folder root-folder/demo
put that .htaccess file on folder demo, not on root-folder.

hope this work for you.

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