Forum Discussion
Mark_Cloutier
Nimbostratus
NimbostratusUsing Encrypted persistence cookies with multiple LTMS
I have a dual datacenter architecture, using GTMs to load balance between datacenters, and in each datacenter I have a pair of LTMs that use cookie based persistence, so that if DNS persistence fails...
Maverick09_1909Nimbostratus
NimbostratusHi All, I am using F5 default cookie for persistence defined on virtual server which is the same name for both datacenter. I use irule to route the traffic to the original data center in case traffic goes to another data center. But it looks like the persistence cookie is getting reset when it goes to opposite data center since the persistence cookie identifying the server is invalid for this new data center. Now when traffic is routed back to original data center again the cookie is invalid, so the session goes to a different server. Now how can i stop the persistence cookie being reset when it goes to opposite data center and kick off routing to original data center before any cookie is reset?
Mark_CloutierNimbostratus
NimbostratusThe persistence cookie contains the pool name, so you need to use the same pool name in both datacenters, or in the irule that does the redirection back to the "correct" datacenter, make sure you are redirecting before a load balancing decision is made, with the associated persistence application.... BTW, I have to revisit my setup, when I encrypted mine, sites stopped working, need to do more investigation as to why....
