Forum Discussion

Zdenda's avatar
Zdenda
Icon for Cirrus rankCirrus
Apr 19, 2013

Local variable used in more iRules but in one VIP - is it shared among VIP iRules?

Hi,   I am thinking about using variable in the way - when I enable some action (redirect), then another actions (another redirects) in another rules will be disabled.   All these are using dif...
application delivery
dev
devops
iRules
Kevin_Stewart's avatar
Kevin_Stewart
Icon for Employee rankEmployee
Apr 19, 2013
When multiple iRules are applied to a virtual server their events are combined, sometimes in an order that you didn't intend. The first thing I would recommend is using the priority tag in the event declarations to guarantee order. As for using a single local variable across iRules, in the same VIP, yes it should work but it's probably not the safest thing to do. If you're going to do this, I highly recommend that you apply [info exists ] checks and catch clauses where appropriate.