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Robert_47833's avatar
Robert_47833
Icon for Altostratus rankAltostratus
Aug 01, 2012

lb::select question

in the irule

 

 

 

 

if { xxxx} {

 

pool cjj$env

 

}

 

 

 

I want to define this $env at the top of this irule,however it should know which pool the traffic is sent,in my case it is cjjsomething.

 

 

can I use LB::select to firstly make sure which pool it use and then define the $env

 

 

?

 

 

if it can be done so,how to write irule

 

 

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  • dlg_23340's avatar
    dlg_23340
    Icon for Cirrus rankCirrus
    Aug 01, 2012
    Robbie, what do you mean "it should know which pool the traffic is sent"?

    if you want to make sure a pool exists before using it, use 'catch', like this irule: 

    
when HTTP_REQUEST {
   set POOL [substr [string tolower [HTTP::host]] 0 ":"]
   if { [catch { pool $POOL } ] } {
     set POOL default_pool
   }
  pool $POOL
}

    This irule attempts to use a pool that matches the Host header sent by the browser, and if it does not exist sends traffic to default_pool.