Disable VIP when pool members are down

Hello,

By design, the VS turn red and reject all connections if all pool members are down.

But you can write an irule and check if there is pool members available with the active_members command and then reject traffic with the reject command

Hello,

By design, the VS turn red and reject all connections if all pool members are down.

But you can write an irule and check if there is pool members available with the active_members command and then reject traffic with the reject command

Please find below an example for HTTP (HTTP_REQUEST) and another generic (LB_FAILED) :

when CLIENT_ACCEPTED {
    set default_pool [LB::server pool]
}

when HTTP_REQUEST {
    set method [HTTP::method]
    if { [active_members $default_pool] < 1 } { 
        HTTP::respond 200 content [ifile get "/Common/maintenance.html"] noserver "Content-Type" "text/html" "Cache-Control" "no-cache, must-revalidate" 
         reject 
    }
}

when LB_FAILED { 
  reject
}

As a matter of fact, you will not need an Irule for this behaviour. However, You still can use an irule if that is what is expected.

So here is what you expect

when HTTP_REQUEST { if { [ active_members [ LB::server pool ] ] <1 } { pool testpool-dc1 } else { [ LB::server ] [ LB::down ] }

}
when CLIENT_ACCEPTED { if { [ active_members testpool-dc1 ] <1 } { LB::down }

}