RPC load balancing among multiple tiers using iRules, pools and forwarding

Ya, my post kept running on and on and I forgot to pose the question. Mainly my question was is this the proper way and is this the most efficient way. Both of which seem to be no. That makes sense on the client/server/remote/local so I will make that change and test it out.

 

 

If you have a device on the internal side is there a way to send directly to that machine through a vip. So...

 

 

If port equals 40000-40999 send to machine1

 

If port equals 41000-41999 send to machine2

 

If port equals 42000-42999 send to machine3

 

etc.

 

 

The only way I know how to do it is to create a pool with a single machine in it but I doubt that is the correct way to do it. So right now I have pool L6APP01 with a single device, pool L6APP02 with a single device, pool L6APP03 with a single device and pool L6APP04 with a single device.

 

 

when CLIENT_ACCEPTED { switch -glob [TCP::local_port] {

 

135 -

 

3372 -

 

749[6789] { pool APP_POOL }

 

40??? { pool L6APP01 }

 

41??? { pool L6APP02 }

 

42??? { pool L6APP03 }

 

43??? { pool L6APP04 }

 

default { discard }

 

}

 

}

 

 

Is there a better way?

 

 

I did find this but I dont see anywhere in the iRule that specifies the specific node - maybe it's a typo?

 

 

 

Selecting a specific server

 

As an alternative to the pool command, you can also write an iRule that directs traffic to a specific server within a pool. To do this, you use the node command. Figure 2 shows an example of this command.

 

 

Figure 2: Example of the node command within an iRule

 

iRule my_iRule1 {

 

when HTTP_REQUEST

 

if { [IP::remote_addr] ends_with ".gif" } {

 

node my_pool

 

}

 

}