Forum Discussion
AndOs
Mar 30, 2011Cirrostratus
Cookie persistence and intermittent node failure
Hi!
I'm using cookie persistence for one of our applications.
We are having some issues with that the nodes goes up and down temporarily.
While that is being looked at, I would like to preserve users that has been load balanced to a particular member, even though it temporarily goes down.
I thought that cookie persistence would take care of this, and keep a user to a specific member until the cookie timed out, but that's not what's happening.
Instead I'm seeing that users get load balanced away from the member that's marked down and a new cookie is sent from big-ip.
Have I made something wrong with the configuration? The virtual server is created from an IIS template with cookie persistence as default.
I've tried to add a one-connect profile, that I read about in the manual, but that didn't change the behavior.
Does big-ip always make a new load balancing decision for a user when a member goes down, regardless of the persistence method used?
/Andreas
- What is your action on service down set for on the pool? Can u post the relevent anonomized config?
- AndOsCirrostratusAction on service down is set to None, I guess this is default?
monitor cookie_app_monitor { defaults from http interval 30 timeout 91 partition App1 } profile persist cookie_app_persist_profile { defaults from cookie mode cookie } profile tcp cookie_app_lan-optimized_tcp_profile { defaults from tcp-lan-optimized } profile tcp cookie_app_wan-optimized_tcp_profile { defaults from tcp-wan-optimized } node 10.1.2.11 { screen cookie_app_node1 } node 10.1.2.12 { screen cookie_app_node2 } pool cookie_app_pool { lb method member least conn monitor all tcp_half_open members { 10.10.2.11:http { priority 1 } 10.10.2.12:http { priority 1 } } } virtual cookie_app_virtual_server { snat automap pool cookie_app_pool destination 10.10.3.22:http ip protocol tcp persist cookie_app_persist_profile profiles { cookie_app_lan-optimized_tcp_profile { serverside } cookie_app_wan-optimized_tcp_profile { clientside } microsoft_iis_http-wan-optimized-compression_shared_http {} } }
- Michael_YatesNimbostratusAndOs,
- Actually.. Action on Service Down plays into the very behavior he's looking for..
LTM: Action on Service Down - AndOsCirrostratusPosted By Michael Yates on 03/30/2011 01:02 PM
- It sounds like your action on service down is already default to "none" which should give you the desired behavior.. Read the above article link of action on service down..
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