Number of defined nodes in a pool

Gosh, we sure managed to overlook that statistic. I will look into getting it added. Thanks.

Is there any kludge I can use to get this information?

 

 

thanks

The only thing I can think of at the moment is to define an array in RULE_INIT that maps how many nodes are in each pool. That might be a bit unmanageable though...

when RULE_INIT {
   array set ::node_count {
      pool_A 15
      pool_B 20
      pool_C 5
   }
}
when LB_SELECTED {
   set pool [LB::server pool]
   if { ([active_members $pool] * 100 / $::node_count($pool)) < 10 } {
      log "Pool $pool is has less than 10% active members!"
   }
}

Your suggestion works well.

 

 

thanks

Hi,

 

 

I thought I read somewhere that version 9.2 added the a variable/command to that would return the number of nodes/members defined for pool. Is this true or did I imagine it?

 

 

Regards

 

 

Sorry as you can see i'm really new to the 9.x

 

 

I have one pool SEARCH_NODES that i want to make sure that out of the 16 I have in that pool that at least 12 are up. I read the above messages and it seems you got it to work. I just don't know where to put it or where to start. I have a sperate "dev" 9x box to test on. not sure what RULE_INIT is. =(

 

 

thank you for your help

 

 

Feel free to call me newb and point me to a FAQ =)

 

You would create a new iRule using the code above provided by unRuleY, modifying the names of the pools & of servers in each to match your situation.

 

 

If all you want is a log message when you have less than 12 servers in a specific pool, you can simplify the code to:

when LB_SELECTED {
   if { [active_members SEARCH_NODES] < 12 } {
      log local0. "Pool SEARCH_NODES has less than 12 active members!"
   }
}

 

 

HTH

 

/deb

Hi,

 

 

I think that answers roliver question but I don't think it answered my question. Is there a variable/command/function that will return the number of nodes/members defined for a pool?

 

 

 

Regards

 

 

 

 

 

Sorry, didn't see your follow-up.

 

 

But no new commands have been added to return "configured_members" for a pool: You'll have to continue to run with unRuleY's class-based workaround above.

 

 

/deb

Hi,

 

 

Are there any plans to make the configured_members value available to iRules?

 

 

 

Regards