Forum Discussion

trx's avatar
trx
Oct 21, 2011

pool check numeric values

Hello Community,

 

I'm trying to determine what each numeric value means when checking a pool's state.

 

 

 

ex)

 

 

 

3) iRule3->VS3:

 

when HTTP_REQUEST {

 

if { ([active_members pool1] < 1) or ([active_members pool2] < 1) or ([active_members pool3] < 1) } {

 

pool pool6

 

} else {

 

pool pool3

 

}

 

}

 

 

 

 

What does the " < 1 " actually mean? What other numeric values are there and what do they mean?

 

 

 

Thanks in advance.

 

 

 

Regards,

 

TRX

 

 

 

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  • Steve_Brown_882's avatar
    Steve_Brown_882
    Historic F5 Account
    Oct 21, 2011
    The example you show is checking the number of active pool members so <1 would mean all of the pool members are down.
  • trx's avatar
    trx
    Oct 21, 2011
    Would happen to know what the numbers below mean?

     

     

    1, 2, 3, etc?

     

     

     

    ex) Goal is to check if the pool member specified is flagged down/disabled or NOT

     

     

     

    if { ([pool google-search member 192.168.254.189 80] < 1) } {

     

    pool google-search member 167.3.11.93 7800

     

    return

     

    } else {

     

    pool google-search member 167.3.10.93 7800

     

    return

     

    }

     

     

     

     

    Thanks.

     

     

     

    Regards,

     

    TRX

     

  • Michael_Yates's avatar
    Michael_Yates
    Icon for Nimbostratus rankNimbostratus
    Oct 21, 2011
    If you want to check the status of a node you can use the LB::status command.

    http://devcentral.f5.com/wiki/iRules.LB__status.ashx

    Your iRule would look something like this: 

    
when HTTP_REQUEST {
log local0. "Node 1 Status:  [LB::status pool my.pool.name member 10.10.10.10 80]"
log local0. "Node 2 Status:  [LB::status pool my.pool.name member 20.20.20.20 80]"
if { [LB::status pool my.pool.name member 10.10.10.10 80] eq "down" } {
HTTP::redirect "http://www.yahoo.com"
}
if { [LB::status pool my.pool.name member 20.20.20.20 80] eq "down" } {
HTTP::redirect "http://www.msn.com"
}
}