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Osiolek_69514's avatar
Osiolek_69514
Icon for Nimbostratus rankNimbostratus
Aug 01, 2010

Is something like that do-able?

Hi all,     I have three DNS records:   a.x.com --> 1.1.1.1   b.x.com --> (alias) --> a.x.com   c.x.com --> 2.2.2.2     As you can see both a.x.com and b.x.com point to the same V...
application delivery
dev
devops
iRules
hoolio's avatar
hoolio
Icon for Cirrostratus rankCirrostratus
Aug 03, 2010
You can resolve a host name to an IP address using NAME::lookup in 9.x or RESOLV::lookup in 10.1 and higher.

 

 

http://devcentral.f5.com/wiki/default.aspx/iRules/name__lookup

 

http://devcentral.f5.com/wiki/default.aspx/iRules/resolv__lookup

 

 

There's an example using NAME::lookup in the Codeshare:

 

 

http://devcentral.f5.com/wiki/default.aspx/iRules/DestinationSnatUsingDNS.html

 

 

If you want to rewrite the hostname and/or URI, you could use "HTTP::header replace Host $new_host" and/or "HTTP::uri $new_uri"

 

 

You can check the ProxyPass iRule for a very comprehensive example of this:

 

 

http://devcentral.f5.com/wiki/default.aspx/iRules/proxypass

 

 

Aaron