What’s the right way to delegate individual zone records to a “global server load balancer”, which is just a simple DNS server that checks to see if a server is up and if so adds the address to the rotation for resolution.
I’ve tried simple delegation using ns records, but I don’t get resolution. In this example, nsg3 and 4 are my global server load balancers for the outlook.aelabad.net zone, and ns3.aelabad.net is the start of authority for the aelabad.net zone. Daniel-McDonalds-iMac:~ mcdonalddj$ dig outlook.aelabad.net +norecurse @ns3.aelabad.net ; <<>> DiG 9.8.3-P1 <<>> outlook.aelabad.net +norecurse @ns3.aelabad.net ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 25051 ;; flags: qr ra; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 1 ;; QUESTION SECTION: ;outlook.aelabad.net. IN A ;; AUTHORITY SECTION: outlook.aelabad.net. 1200 IN NS nsg4.austin-energy.net. outlook.aelabad.net. 1200 IN NS nsg3.austin-energy.net. ;; ADDITIONAL SECTION: nsg3.austin-energy.net. 918 IN A 10.10.9.3 ;; Query time: 1 msec ;; SERVER: 10.1.9.34#53(10.1.9.34) ;; WHEN: Mon Apr 7 09:05:42 2014 ;; MSG SIZE rcvd: 105 Daniel-McDonalds-iMac:~ mcdonalddj$ dig outlook.aelabad.net @nsg3.austin-energy.net ; <<>> DiG 9.8.3-P1 <<>> outlook.aelabad.net @nsg3.austin-energy.net ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 8783 ;; flags: qr aa ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;outlook.aelabad.net. IN A ;; ANSWER SECTION: outlook.aelabad.net. 10 IN A 10.10.223.52 ;; Query time: 3 msec ;; SERVER: 10.10.9.3#53(10.10.9.3) ;; WHEN: Mon Apr 7 09:03:03 2014 ;; MSG SIZE rcvd: 72 Daniel-McDonalds-iMac:~ mcdonalddj$ dig outlook.aelabad.net @ns3.aelabad.net ; <<>> DiG 9.8.3-P1 <<>> outlook.aelabad.net @ns3.aelabad.net ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 14770 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0 ;; QUESTION SECTION: ;outlook.aelabad.net. IN A ;; AUTHORITY SECTION: net. 686 IN SOA a.gtld-servers.net. nstld.verisign-grs.com. 1396879162 1800 900 604800 86400 ;; Query time: 2 msec ;; SERVER: 10.1.9.34#53(10.1.9.34) ;; WHEN: Mon Apr 7 09:03:17 2014 ;; MSG SIZE rcvd: 110
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