Forum Discussion

Jeff_McConnell_'s avatar
Jeff_McConnell_
Icon for Nimbostratus rankNimbostratus
May 24, 2006

jessionid uie persistence

I am testing the following iRule to persist on jsession for three clustered apps, which so far is working. While testing, I see that when I disable a node, the sessions continue to persist to the disabled node. It is only when I take down the app servers and the health check fails that persistence drops and persists to another node. Is this normal behavior? Any ideas on how to drop/move sessions when a node with persistent connections is disabled? Thanks

 

 

when HTTP_REQUEST {

 

if { [HTTP::cookie exists "JSESSIONID"] and [HTTP::uri] contains "/app1/" or [HTTP::uri] contains "/app2/" or [HTTP::uri] contains "/app3/" } {

 

persist uie [HTTP::cookie "JSESSIONID"]

 

} else {

 

set jsess [findstr [HTTP::uri] "jsessionid" 11 ";"]

 

if { $jsess != "" and [HTTP::uri] contains "/app1/" or [HTTP::uri] contains "/app2/" or [HTTP::uri] contains "/app3/"} {

 

persist uie $jsess

 

}

 

}

 

}

 

 

application delivery
dev
devops
iRules

2 Replies

Sort By
  • JRahm's avatar
    JRahm
    Icon for Admin rankAdmin
    May 24, 2006
    That is a pool member (or node) setting in the configuration. You can set for:

     

     

    all traffic

     

    active connections only

     

    active and persistent connections

     

     

  • Jeff_McConnell_'s avatar
    Jeff_McConnell_
    Icon for Nimbostratus rankNimbostratus
    May 24, 2006
    So "Only active connections allowed" is "Forced down" under 4.x. I was wondering where that option went. Thanks for the info.

     

     

    I saw this iRule in another post:

     

     

    when CLIENT_ACCEPTED {

     

    set add_persist 1

     

    }

     

    when HTTP_RESPONSE {

     

    if { [HTTP::cookie exists "JSESSIONID"] and $add_persist }

     

    { persist add uie [HTTP::cookie "JSESSIONID"]

     

    set add_persist 0

     

    }

     

    }

     

    when HTTP_REQUEST {

     

    if { [HTTP::cookie exists "JSESSIONID"] } {

     

    persist uie [HTTP::cookie "JSESSIONID"]

     

    } else {

     

    set jsess [findstr [HTTP::uri] "jsessionid" 11 ";"]

     

    if { $jsess != "" } {

     

    persist uie $jsess

     

    }

     

    }

     

    }

     

     

    Can anyone help out with an explanation of the HTTP_RESPONSE persist? For my scenario of persisting only to three apps based on the jsessionid, it doesn't seem necessary, but I want to make sure that I am not missing something.

     

     

    Thanks