sticky group timer?

steve-hong · ‎05-02-2007

Hi,

What is the timer in the sticky group do? It is an idle timer or cache timer? I am using source ip based sticky on one of my vserver. there are two reals behind it and only two front end (proxy) web servers that hits it. when I remove one of the real (serverA), all the connection sourced by the two web server goes to the other real(serverB). When I bring back serverA, I don't see any connection going to it. I think that's because the two front end web servers are being "stuck" to serverB. When I view the sticky table, I see the specific group with a timer value that's decreasing. I'm tempted to change the sticky timer to 1 (minute) but am not sure it it's a idle timer or a cache timer.

example config:

sticky 130 netmask 255.255.255.255 timeout 30

vserver backend_App

virtual x.x.x.x

server x

sticky 30 group 130

thanks,

Steve

Syed Iftekhar Ahmed · ‎05-02-2007

The timeout specifies the period of time that the sticky information is kept in the sticky tables. The sticky timer for a specific entry is reset each time when a new connection matching that entry is opened.

Syed

Gilles Dufour · ‎05-03-2007

Steve,

sticky source-ip when there is only 2 ip coming in is not a very good solution.

If we are talking http, you should check the possibility to use cookie.

If your servers do not have a cookie that can be used for stickyness, then I would suggest to use the cookie-insert feature of the CSM allowing the CSM to generate is own cookie.

Gilles.

steve-hong · ‎11-12-2007

thanks. that's what i ended up doing.