Load balance only to one peer if another computer is down

Hi gguy,

 

 

Conveniently, this is in the wrong forum. I say conveniently because you're asking about iRules to achieve your goals, but I would use iControl - there is more than one way to achieve what you want, possibly someone else has a better solution, but here's what I would do.

 

 

Write a small .NET app that monitors the backend - from as simple as a ping to as complex as using the MS Management interface. When the backend application is down, make an iControl call to change the enabled state of the COM+ proxy to down. When the backend server comes back up, change the state back to enabled. The relevant bit of iControl is: LocalLB::NodeAddress::set_monitor_state(), which allows you to control the status of a given node (in this case the address of the proxy).

 

 

I hope that helps. There are some great informational articles about iControl on the site, we're happy to point you at them, but the best reference is the iControl Wiki: http://devcentral.f5.com/wiki/default.aspx/iControl/APIReference.html

 

 

Regards,

 

Don.