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Forum Discussion

Richard__Harlan's avatar
Richard__Harlan
Historic F5 Account
Jun 15, 2006

DNS Lookup

Playing with the following rule trying to get DNS lookups working. Every time I hit the rule the name::response allways comes back empty. Any ideas what I am doing wrong. Thanks     when HTTP_RE...
application delivery
dev
devops
iRules
Colin_Walker_12's avatar
Colin_Walker_12
Historic F5 Account
Mar 23, 2011
Could you specifically check each of the nodes with LB::status?

Something like: 


set status1 [LB::status pool  member  ]
set status2 [LB::status pool  member  ]

if {$status1 eq "up"} {
  set ips [RESOLV::lookup @$static::DNS_RESOLVER $host]
  set _ipaddress [lindex $ips 0]
} elseif {$status2 eq "up"}{
  set ips [RESOLV::lookup @$static::DNS_RESOLVER_BACKUP $host]
  set _ipaddress [lindex $ips 0]
}

This way you wouldn't have to endure the timeout.

Colin