Triggered Pool Selection (iRule Request)

Here's a tricky one.

 

 

Our developers need to be able to flip a particular app pool into service remotely. They use this for release management. So for example, legA is activ receiving customer requests, they deploy a patched version to legB, then when tested and ready the flip a switch and the customer requests get forwarded to legB instead.

 

 

I was thinking I could do this by using a unrelated node and setting up an http health monitor. The state of the node (up / down) could then be leveraged by an iRule and used as a pool selector.

 

 

But perhaps a better way would be to use the response to a health monitor style get which could generate a key word which I would use in a switch.

 

 

ANyone done something like this before?