Load balancing to a domain name vs a pool

The only way the cloud server has any idea whether or not you used a host name to connect is by the value of the host header. You should be able to just replace the value of the host header before forwarding the request on to the pool representing the cloud server's IP. The change might not be reflected in the log entry because I think header information is parsed once and then [HTTP::host] will always return what was parsed before iRule execution, but that's a question for the gurus.

 

 

{

 

HTTP::header replace "Host" "www.cloudHostName.com"

 

log local0.alert "cloud_pool Host:[HTTP::host]-[HTTP::uri]"

 

pool cloud_pool

 

return

 

}

 

 

If a connection is on any port other than 80 you will want to modify this to include the port at the end of the new host header value, but if the connection is on port 80, this should suffice.

 

 

Let me know how it goes. I didn't do any testing but I think this should do the trick.