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David_Windeyer's avatar
David_Windeyer
Icon for Nimbostratus rankNimbostratus
May 25, 2011

help with using class match

I'm trying to write an I rule which will direct traffic to certain pools and nodes based on the host name.

 

 

The line with class match seems to be causing problems - complains about wanting braces. I tried following the example from http://devcentral.f5.com/wiki/defau...class.html

 

 

Does anyone have thoughts?

 

 

Thanks,

 

 

David.

 

 

 

 

when RULE_INIT {

 

Log debug messages to /var/log/ltm? (0=no, 1=yes)

 

set ::silo_access_debug 1

 

if {$::silo_access_debug}{log local0. "Debug set to $::silo_access_debug"}

 

}

 

when HTTP_REQUEST {

 

set app_pool_member [class match –value [HTTP::host] equals silo_access]

 

set app_pool [getfield $app_pool_member " " 1]

 

set app_member [getfield $app_pool_member " " 2]

 

if {$app_pool ne ""} {

 

if { $::silo_access_debug } { log local0. "[IP::client_addr] wants [HTTP::host], sending to pool $app_pool member $app_member" }

 

pool $app_pool member $app_member

 

}

 

}

 

application delivery
dev
devops
iRules

3 Replies

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  • hooleylist's avatar
    hooleylist
    Icon for Cirrostratus rankCirrostratus
    May 25, 2011
    Hi David,

     

     

    You have an m-dash (–) instead of a hyphen (-) on the value flag in your class command.

     

     

    Aaron
  • hooleylist's avatar
    hooleylist
    Icon for Cirrostratus rankCirrostratus
    May 25, 2011
    Also, you can change the global variable in RULE_INIT to a static variable to preserve CMP: 

    
when RULE_INIT {
    Log debug messages to /var/log/ltm? (0=no, 1=yes)
   set static::silo_access_debug 1
   if {$static::silo_access_debug}{log local0. "Debug set to $static::silo_access_debug"}
}
when HTTP_REQUEST {
  set app_pool_member [class match -value [HTTP::host] equals silo_access]
  set app_pool [getfield $app_pool_member " " 1]
  set app_member [getfield $app_pool_member " " 2]
  if {$app_pool ne ""} {
    if { $static::silo_access_debug } { log local0. "[IP::client_addr] wants [HTTP::host], sending to pool $app_pool member $app_member" }
    pool $app_pool member $app_member
  }
}

    Aaron