Balance to webserver port based on value held in status file

Hi lucaspawpaw,

 

iRule cannot directly read the value of a text file. However, you can read a value for your sorry page indirectly.

 

 

 

For example (let's assume you have 3 values)

 

1. You can create a ping page http://www.domain.com/ping.html. Contained in the ping.html page will hold a value.

 

2. You then create 3 F5 monitors associated to 3 new "dummy" pools. These pools will contain node members that will host the ping.html file

 

3. You then create an iRule similar to the one below

 

 

when CLIENT_ACCEPTED {

 

if { [active_members pool1] = 0 } {

 

pool pool7007

 

return

 

} else if {[active_member pool2] = 0 {

 

HTTP::respond 404 content "SORRY PAGEWe apologies, the website you are trying to reach is current experiencing technical difficulties"

 

return

 

}

 

}

 

 

The way it works is that monitor fails then the irule will catch the failure as a 0 available members in a specific pool which would then be triggered to "Do something" based on those condition

 

 

I hope this helps

 

Bhattman