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Yekesa_Kosuru_1's avatar
Yekesa_Kosuru_1
Icon for Nimbostratus rankNimbostratus
Nov 20, 2006

testing node for up/down before dispatch

Hi Experts,

 

 

Thanks a million for all your help. I have been putting final pieces of my script together. Quick question, can I use LB::status to test the status of a app server node before dispatching the requst?

 

 

when HTTP_REQUEST_DATA {

 

....

 

do a mod and figure out the node to which to forward this request to

 

BUT WAIT, make sure that node is up

 

 

if { [LB::status pool my_pool member 192.168.1.5 80] eq "up" } {

 

pool my_pool member 192.168.1.5:80 go ahead & send the req

 

}

 

else {

 

LB::down pool my_pool member 192.168.1.5:80

 

}

 

...

 

}

 

 

I have 5 nodes in my_pool and based on a hash value I send it to appropriate app server node. I want to be sure that the node is up before sending. Any help is appreciated.

 

 

Regards

 

 

yekesa
application delivery
dev
devops
iRules
  • hoolio's avatar
    hoolio
    Icon for Cirrostratus rankCirrostratus
    Nov 21, 2006
    Hi Yekesa,

     

     

    The LB::status command was added in 9.2.x so you would need to be running the latest version to use it.

     

     

    I don't think you would want to manually disable the pool member if it wasn't up. Check this post for more info on changes to the monitoring functionality in the upcoming 9.4 version (Click here)

     

     

    Have you tried testing the rule? If so, how is it working?

     

     

    Aaron