HA in irule

Assuming it's an HTTP request

 

 

I would create 2 pools

 

 

poolA - Destination A priority 100 ratio 1 and Destination B priority 50 ratio 1 with 1 minimum member active <== Destination A is active and Destination B takes over when A fails

 

PoolB - Destination B priority 50 ratio 1 and Destination A priority 50 ratio 1 with 1 minimum member active <==Destination B is active and Destination A takes over when B fails.

 

 

Here is how I would probably write the code

 

 

when HTTP_REQUEST {
     switch [IP::client_addr] {
       192.168.1.1 { pool poolA }
       192.168.1.2 { pool poolB }
    }
}

 

 

Of course this assumes you know source A and source B. If your sources start to get bigger or change into specific networks then you might want to

 

 

 

when CLIENT_ACCEPTED {

 

if {[IP::addr [IP::client_addr] equals 192.168.1.0/24]} {

 

pool poolB

 

} {

 

else if { do something }

 

}

 

 

 

I hope that helps

 

 

CB