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Craig_Jackson_2's avatar
Craig_Jackson_2
Icon for Nimbostratus rankNimbostratus
Nov 05, 2008

Access to pool member connection limits?

Is there any way to access or manipulate the Connection Limit value of a pool member in an iRule? I'd like to set up a rule which would allow more concurrent connections to a particular member if a persistence cookie were present. The idea is to reserve resources for ongoing persistent sessions at the expense of sessions which have not yet been persisted.

 

 

Craig Jackson
application delivery
dev
devops
iRules

4 Replies

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  • Colin_Walker_12's avatar
    Colin_Walker_12
    Historic F5 Account
    Nov 05, 2008
    There isn't a specific command available to do that per se, but you could write the logic yourself. Something like "if pool has more than x connections, check for cookie, if cookie exists, route normally, else redirect elsewhere". Something to that effect...

     

     

    Colin
  • Craig_Jackson_2's avatar
    Craig_Jackson_2
    Icon for Nimbostratus rankNimbostratus
    Nov 06, 2008
    Would this require keeping track of the number of pool connections myself in the iRule, or is there a way to access the counts that the LTM is already keeping?
  • Nicolas_Menant's avatar
    Nicolas_Menant
    Icon for Employee rankEmployee
    Nov 06, 2008
    I'm afraid you'll have to count it by yourself.

     

     

    Through iRule we don't have access to the number of connection already established on each pool member
  • hooleylist's avatar
    hooleylist
    Icon for Cirrostratus rankCirrostratus
    Nov 06, 2008
    This would be a good request for enhancement to send F5 Support. I'm pretty sure it has already been requested, but it would help to throw another case on the pile.

     

     

    Aaron