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Kdedesko_49781's avatar
Kdedesko_49781
Icon for Nimbostratus rankNimbostratus
Mar 04, 2015

Can anyone see anything wrong with these I-Rules?

Hi I am new to writing I-Rules and have put an I-Rule together that is quite simple and I think will work but am wondering if there is something obviously wrong with them before I implement them.  ...
application delivery
devops
iRules
Michael_Jenkins's avatar
Michael_Jenkins
Icon for Cirrostratus rankCirrostratus
Mar 04, 2015

Did you get a chance to check out the active_members wiki page, the LB::server pool command and the iRules 101 page on pools and members and such? They have some more specific details on this.

I think your iRule may need a little tweak to get the pool name when checking for active members. You can either use 

[active_members POOL_NAME]
to specify a pool name. Otherwise you could use 
[active_members [LB::server pool]]
instead to get whatever the currently set pool is. (And I'd include the "Connection Close" header on the return as well)

rule TEST { 
    when HTTP_REQUEST { 
        if { [active_members POOL_NAME] > 0 } { 
            HTTP::respond 200 content "" Connection Close
        } else { 
            HTTP::respond 404 content "" Connection Close
        } 
    } 
}