SEO Issue

See
#579624: Redirect non image/css/js requests from cdn1.example.com to example.com or www.example.com

Also be aware that for some reason javascript doesn't work correctly with this, so .js files get 301-ed for some reason. I don't use js parallelization on my site since I only have 1 file to download anyway.

I don't think you could have found those rewrite rules on Google; came up with them my self, just for this project.

Yes leave it blank and it does not get "paralleled".

Do you suggest it would work for add-on domains too? We had few issues with add-on domains where Google reported double content for addondomain.example.com and addondomain.com since these contents were actually equal...

@Lazarevac
Your situation is different and not related this, the parallel module.

when i add the .htaccess rules you linked to in #1, yslow downgrades me in the "avoid URL redirects" category.
is that something that I should be concerned with? Personally, I didn't notice any performance changes one way or the other...

Are you using the ones from http://drupal.org/node/579624#comment-2120792?

if your getting that from yslow it means your getting nothing, as in parallel isn't doing anything then; its redirecting back to your domain from the subdomains.
What does the network tab say in firebug?

i was using the rules from the OP, not that comment.
rules from the comment worked. thanks.

Place this above boost rules if you have any; otherwise this goes below # RewriteBase / in your htaccess file.

  #Parallel Redirect
  RewriteCond %{REQUEST_URI} !(^/(.*)(.js|.css)) [NC]
  RewriteCond %{HTTP_ACCEPT} !(.*image.*|.*css.*|.*javascript.*) [NC]
  RewriteCond %{HTTP_HOST} ^(cdn1.example.com|cdn2.example.com|cdn3.example.com)$ [NC]
  RewriteRule ^(.*)$ http://www.example.com/$1 [L,R=301]

This will redirect all non image/javascript/css requests back to www.example.com via 301 redirect. Be sure to replace example.com with your own site name; also remove the www. if you don't want that.

Another example using drupal.org

  #Parallel Redirect
  RewriteCond %{REQUEST_URI} !(^/(.*)(.js|.css)) [NC]
  RewriteCond %{HTTP_ACCEPT} !(.*image.*|.*css.*|.*javascript.*) [NC]
  RewriteCond %{HTTP_HOST} ^(cdn1.drupal.org|cdn2.drupal.org|cdn3.drupal.org)$ [NC]
  RewriteRule ^(.*)$ http://drupal.org/$1 [L,R=301]

Not sure if it's related but on my images are not indexed on my website where I use modules parallel. I checked my robots.txt and path to images is not blocked.

my webite: seasecret .biz

@heyyo
I think it has to do with your images being inside a .swf file

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@mikeytown2
Forget my issue my images are now indexed.

#352180: Better, multi-site friendly "www." addition/removal in .htaccess Need to track this so this htaccess trick will work with multisite's easily.

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Will be obsoleted by #933942: Merge Parallel and CDN modules: migration path.

I use this to make sure the sub dose not serve anything but the kind of content it's suppose to (also ensures no canonical issue from the requesting, www, domain):

RewriteCond %{HTTP_HOST} static.plattdaddy.com [NC]
 RewriteCond %{REQUEST_URI} !\.(png|gif|jpg|jpeg|js|css|swf)$ [NC]
 RewriteRule ^(.*)$ http://www.plattdaddy.com/$1 [L,R=301]

 RewriteCond %{HTTP_HOST} www.plattdaddy.com [NC]
 RewriteCond %{REQUEST_URI} \.(png|gif|jpg|jpeg|js|css|swf)$ [NC]
 RewriteRule ^(.*)$ http://static.plattdaddy.com/$1 [L,R=301]

I only use one "static" "cdn" domain, if you're using multiple, you'll need to make a copy of both for as many as you need. Here is an example of redirecting an "img", "static", and "www" domains properly:

 RewriteCond %{HTTP_HOST} static.plattdaddy.com [NC]
 RewriteCond %{REQUEST_URI} !\.(js|css|swf)$ [NC]
 RewriteRule ^(.*)$ http://www.plattdaddy.com/$1 [L,R=301]

 RewriteCond %{HTTP_HOST} www.plattdaddy.com [NC]
 RewriteCond %{REQUEST_URI} \.(js|css|swf)$ [NC]
 RewriteRule ^(.*)$ http://static.plattdaddy.com/$1 [L,R=301]

RewriteCond %{HTTP_HOST} img.plattdaddy.com [NC]
 RewriteCond %{REQUEST_URI} !\.(png|gif|jpg|jpeg)$ [NC]
 RewriteRule ^(.*)$ http://www.plattdaddy.com/$1 [L,R=301]

 RewriteCond %{HTTP_HOST} www.plattdaddy.com [NC]
 RewriteCond %{REQUEST_URI} \.(png|gif|jpg|jpeg)$ [NC]
 RewriteRule ^(.*)$ http://img.plattdaddy.com/$1 [L,R=301]

See what I did there for adding another? Two more rules required, let me know if this is helpful, or someone finds it flawed.

Hello

I have a similar set up as yours with 1 sub-domain that is created via CNAME.
so to simplify i have
http://example.com ==> main site
cdn1.example.com ==> CNAME - created for CDN to deliver images only

The cdn1 folder is empty i.e. no files stored. ==> Is this Ok or do i need to copy the folder structure from my main site ?
I have set up the CDN module to serve .image files from the cdn1 location.

I tested your rewrite rules but I cant get them to work. i.e. links from the cdn1 are not redirected to the main site's image folder.

regards