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<div>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.</div>
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<div>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.</div>
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<p style="margin: 0px; font-size: 11px; font-family: Menlo;">Daniel-McDonalds-iMac:~ mcdonalddj$ dig outlook.aelabad.net +norecurse @ns3.aelabad.net</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo; min-height: 13px;"><br>
</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">; <<>> DiG 9.8.3-P1 <<>> outlook.aelabad.net +norecurse @ns3.aelabad.net</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;; global options: +cmd</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;; Got answer:</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 25051</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;; flags: qr ra; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 1</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo; min-height: 13px;"><br>
</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;; QUESTION SECTION:</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;outlook.aelabad.net.<span class="Apple-tab-span" style="white-space:pre">
</span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>A</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo; min-height: 13px;"><br>
</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;; AUTHORITY SECTION:</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">outlook.aelabad.net.<span class="Apple-tab-span" style="white-space:pre">
</span>1200<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre">
</span>NS<span class="Apple-tab-span" style="white-space:pre"> </span>nsg4.austin-energy.net.</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">outlook.aelabad.net.<span class="Apple-tab-span" style="white-space:pre">
</span>1200<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre">
</span>NS<span class="Apple-tab-span" style="white-space:pre"> </span>nsg3.austin-energy.net.</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo; min-height: 13px;"><br>
</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;; ADDITIONAL SECTION:</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">nsg3.austin-energy.net.<span class="Apple-tab-span" style="white-space:pre">
</span>918<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre">
</span>A<span class="Apple-tab-span" style="white-space:pre"> </span>10.10.9.3</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo; min-height: 13px;"><br>
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<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;; Query time: 1 msec</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;; SERVER: 10.1.9.34#53(10.1.9.34)</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;; WHEN: Mon Apr 7 09:05:42 2014</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;; MSG SIZE rcvd: 105</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">Daniel-McDonalds-iMac:~ mcdonalddj$ dig outlook.aelabad.net @nsg3.austin-energy.net</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo; min-height: 13px;"><br>
</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">; <<>> DiG 9.8.3-P1 <<>> outlook.aelabad.net @nsg3.austin-energy.net</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;; global options: +cmd</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;; Got answer:</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 8783</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;; flags: qr aa ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo; min-height: 13px;"><br>
</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;; QUESTION SECTION:</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;outlook.aelabad.net.<span class="Apple-tab-span" style="white-space:pre">
</span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>A</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo; min-height: 13px;"><br>
</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;; ANSWER SECTION:</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">outlook.aelabad.net.<span class="Apple-tab-span" style="white-space:pre">
</span>10<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre">
</span>A<span class="Apple-tab-span" style="white-space:pre"> </span>10.10.223.52</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo; min-height: 13px;"><br>
</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;; Query time: 3 msec</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;; SERVER: 10.10.9.3#53(10.10.9.3)</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;; WHEN: Mon Apr 7 09:03:03 2014</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo; min-height: 13px;"></p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;; MSG SIZE rcvd: 72</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">Daniel-McDonalds-iMac:~ mcdonalddj$ dig outlook.aelabad.net @ns3.aelabad.net</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo; min-height: 13px;"><br>
</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">; <<>> DiG 9.8.3-P1 <<>> outlook.aelabad.net @ns3.aelabad.net</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;; global options: +cmd</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;; Got answer:</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 14770</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo; min-height: 13px;"><br>
</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;; QUESTION SECTION:</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;outlook.aelabad.net.<span class="Apple-tab-span" style="white-space:pre">
</span>IN<span class="Apple-tab-span" style="white-space:pre"> </span>A</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo; min-height: 13px;"><br>
</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;; AUTHORITY SECTION:</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">net.<span class="Apple-tab-span" style="white-space:pre">
</span>686<span class="Apple-tab-span" style="white-space:pre"> </span>IN<span class="Apple-tab-span" style="white-space:pre">
</span>SOA<span class="Apple-tab-span" style="white-space:pre"> </span>a.gtld-servers.net. nstld.verisign-grs.com. 1396879162 1800 900 604800 86400</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo; min-height: 13px;"><br>
</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;; Query time: 2 msec</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;; SERVER: 10.1.9.34#53(10.1.9.34)</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;; WHEN: Mon Apr 7 09:03:17 2014</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;">;; MSG SIZE rcvd: 110</p>
<p style="margin: 0px; font-size: 11px; font-family: Menlo;"></p>
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