Forum Discussion

Jeff_43264's avatar
Jeff_43264
Icon for Nimbostratus rankNimbostratus
May 19, 2010

Hash persistence based on true-client-IP

Greetings all,     I'm working on my first iRule, because of a unique requirement I have. I am setting up load balancing for a web-based application that is very sensitive to view state, and so...
application delivery
dev
devops
iRules
Jeff_43264's avatar
Jeff_43264
Icon for Nimbostratus rankNimbostratus
May 19, 2010
Ah! I was working under the assumption that I would need a hash persistence profile as described here:

 

 

http://devcentral.f5.com/Default.aspx?tabid=63&PageID=149&ArticleID=135&articleType=ArticleView

 

 

But what you're saying is that if I apply the iRule to a virtual server, both the load balancing algorithm and the persistence profile really become irrelevant? That makes sense but operationally, I wasn't sure how I needed to configure it once I had a valis iRule.

 

 

Just to check that I'm clear about the two lindex commands... so the "active_members -list " command is returning a list of items, each item containing an ip and a port, so the lindex/modulo combination returns one of those items. The second lindex command essentially breaks it up, "lindex $picked 0" being the IP and "lindex $picked 1" being the port?

 

 

Thank you very much for your help so far, I appreciate it.

 

 

-Jeff