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dkinsler_23191's avatar
dkinsler_23191
Icon for Nimbostratus rankNimbostratus
Oct 13, 2010

Redirect without rewriting host portion of URL

Hello all, I have a question about Redirecting. I have two VIPs and each has its own URL. I want one to redirect to the other under certain cconditions but I dont want the URL to change hosts. For instance....

 

 

I have mydomain1.com and mydomain2.com This Irule would be placed on mydomain1.com to redirect the contect to mydomain2.com if the URI starts with /stuff.

 

 

when HTTP_REQUEST { if { [HTTP::uri] starts_with "/stuff"} { HTTP::redirect "http://mydomain2.com/[HTTP::uri]" } }

 

 

The problem is, I dont want the users browser to see the domain change, but I want to get the contect from mydomain2.

 

 

Anybody have any ideas on how that should be done? Both vips are internal to the LB.
application delivery
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iRules

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  • Chris_Miller's avatar
    Chris_Miller
    Icon for Altostratus rankAltostratus
    Oct 13, 2010
    I'm assuming you have different pools for each VIP?

     

     

    Would it be acceptable to simply use the other pool?

     

     

    Using your code:

     

     

    
when HTTP_REQUEST {
 {if { [HTTP::uri] starts_with "/stuff" } {
    pool pool_mydomain2 } {
else pool pool_mydomain1 }}
  • hoolio's avatar
    hoolio
    Icon for Cirrostratus rankCirrostratus
    Oct 13, 2010
    If you want to hide the change in hostname from the client you would want to rewrite the Host header value and potentially select a different pool to send the requests to. You wouldn't want to send a redirect back to the client as this will update the address bar and the client will see the change. Is there a separate pool that serves content for mydomain2.com? Or is it the same as mydomain1.com?

     

     

    Aaron
  • Chris_Miller's avatar
    Chris_Miller
    Icon for Altostratus rankAltostratus
    Oct 13, 2010
    No worries Aaron.

     

     

    This type of rule would also require OneConnect, right? If we're evaluating every HTTP request and sending certain ones to different pools?

     

  • Ben_95489's avatar
    Ben_95489
    Icon for Nimbostratus rankNimbostratus
    Oct 13, 2010
    That's a great point, Chris.

     

     

    While it may work (for the most part) without OneConnect, it's certainly a much better idea to enable it now instead of waiting for something to break later. Even if individual clients are only going to make requests for a single domain per connection, there are still lots of things that will reuse connections for more than one request - especially CDNs. They will often even reuse the same connection for requests from a myriad of different users.

     

     

    // Ben

     

  • hoolio's avatar
    hoolio
    Icon for Cirrostratus rankCirrostratus
    Oct 14, 2010
    If it's a different pool for each host name, you'd want to use an iRule like Chris suggested. You'd probably also want to rewrite the Host header if the different pool members expect a specific hostname. You can do this with "HTTP::header replace Host newhost.example.com".

     

     

    Aaron