Forum Discussion

Nimbostratus

Feb 22, 2019

Default Pool Selection if irule selected pool is down.

We have a applied a irule to VS who selects a pool X with a single node X based on HTTP header. My question is that if node X is down which in turn make the pool down ,will the traffic will be direc...

Cumulonimbus

Feb 23, 2019

Can you please provide your iRule.

You can apply both irule and default pool to virtual server or just iRule.

iRule will have high priority over default pool.

1st step is traffic flow according to the iRule and any traffic not matching iRule then it will go to default pool.

hope this helps.

Mohit_Rathee
Nimbostratus
Feb 23, 2019
when CLIENT_ACCEPTED { if { [IP::addr [IP::client_addr]/24 equals 10.10.1.1] } { pool Pool_X } }

And my default pool for VS is Pool_Y. Now suppose 10.10.1.1 makes a connection but Pool_X is down will it go to Pool_Y.
RaghavendraSY_7
Cumulonimbus
Feb 23, 2019
If monitor is not assigned to the pool, virtual server will go to unkown status.

A virtual server with an Unknown status will take in traffic and send it on to the resources even if they are not online.

In your case you are sending traffic from 10.10.1.1 to pool X, if it not mathcing IP then it will go to PoolY. But configure your iRule as mentioned below and configure default pool to none under resource section. Hope this helps.

when CLIENT_ACCEPTED { if { [IP::addr [IP::client_addr]/24 equals 10.10.1.1] } {

pool Pool_X

} else {

pool default_pool

}
Mohit_Rathee
Nimbostratus
Feb 23, 2019
The problem is not if 10.10.1.1 don't match,problem is that if it matches and pool X is down will it go to pool Y?