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ITGem's avatar
ITGem
Icon for Altocumulus rankAltocumulus
Dec 04, 2017

GDNS GTM DNS iRule Response Round Robin A Records for SVIP Databases

GTM/LTM version 11.3.0 HF 10. Does anyone have an GTM DNS iRule that can be used to return three A records? I need a way to load balance databases between datacenters without changing their existin...
application delivery
BIG-IP DNS
iRules
scottn4milesto1's avatar
scottn4milesto1
Icon for Nimbostratus rankNimbostratus
Dec 04, 2017

Give this a try;

when DNS_REQUEST {
if { [IP::addr [IP::remote_addr] equals x.x.x.x/x] } { 
    host 10.x.x.x 
} 
    else { 
     Generate an answer with three A records
    DNS::answer insert "[DNS::question name]. 111 [DNS::question class] [DNS::question type] 1.1.1.1"
    DNS::answer insert "[DNS::question name]. 111 [DNS::question class] [DNS::question type] 1.1.1.2"
    DNS::answer insert "[DNS::question name]. 111 [DNS::question class] [DNS::question type] 1.1.1.3"
}
DNS::return
}