For more information regarding the security incident at F5, the actions we are taking to address it, and our ongoing efforts to protect our customers, click here.

Forum Discussion

calvin_88894's avatar
calvin_88894
Icon for Nimbostratus rankNimbostratus
Jan 12, 2010

A Special issue for web application server balancing in production environment

Hi, We have 30 clients and 3 web application servers for a pack operation in production environment.   Our application got concurrent problem cannot be fixed at the moment.   So We'd better ...
management
microsoft
scom
hoolio's avatar
hoolio
Icon for Cirrostratus rankCirrostratus
Jan 12, 2010
Hi Calvin,

 

 

There are a few example iRules which limit the number of client IP addresses or the number of HTTP sessions to a VIP at a given time. You can search the Codeshare page for the word "limit" to find them:

 

 

http://devcentral.f5.com/Wiki/default.aspx/iRules.CodeShare

 

 

It sounds like you want to limit the number of HTTP sessions from a source IP address to one and that you want to ensure the pool member with the lowest number of sessions is the one which receives new sessions. You can get close to this type of functionality using least connections load balancing and an iRule like this:

 

 

http://devcentral.f5.com/Wiki/default.aspx/iRules/HTTPSessionLimit.html

 

 

Aaron