<div dir="ltr">The logs do seem to only check the first 1-2 servers in the forwarders section when the problem is occurring. If named is restarted on this slave, it will check all the servers, as expected when it receives a notify.<div>
<br></div><div>We have our zones distributed among 5 masters to speed updates. The software we use that allows customers to update their zones does a direct update of the zone file on the master server to which it is connected, then queues a reload of named. Once every few minutes the reload occurs on the master, which sends the notify to our slave servers, who should check serials on all the masters and transfer from the latest. We do this because the number of zones we have was causing the reload on the masters to take too long and delaying updates to the slaves.</div>
<div><br></div><div>This system was working without issue until this slave was updated to BIND 9.8, and the slave that is still on BIND 9.3 continues to function normally.</div><div><br></div><div>One thing that just occurred to me is that in every case I've seen thus far, an earlier master (say 10.0.1.1) had a zone with an old serial for the domain in question (which has a newer serial on say 10.0.5.1). This occurs because we tend to move users between servers that sync to different masters. Could this be related to the problem?</div>
</div><div class="gmail_extra"><br><br><div class="gmail_quote">On Tue, Jul 30, 2013 at 5:01 PM, Steven Carr <span dir="ltr"><<a href="mailto:sjcarr@gmail.com" target="_blank">sjcarr@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="im">On 30 July 2013 21:38, Brandon Whaley <span dir="ltr"><<a href="mailto:brandonw@inmotionhosting.com" target="_blank">brandonw@inmotionhosting.com</a>></span> wrote:<br>
</div><div class="gmail_extra"><div class="gmail_quote"><div class="im">
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div>zone "<a href="http://example.com" target="_blank">example.com</a>" {</div><div> type slave;</div>
<div> file "/var/named/slaves/example.com.db";</div><div> masters { 10.0.1.1; 10.0.2.1; 10.0.3.1; 10.0.4.1; 10.0.5.1; };</div>
<div>};</div></div></div></blockquote><div><br></div></div><div>So given what I mentioned before I would envisage BIND contacting 10.0.1.1 and then failing to 10.0.2.1 but ignoring the rest. Is this what you are seeing in the logs? Or is the slave not attempting to contact any of the servers?<br>
<br></div><div>Just out of curiosity, what is the reason for having 5 masters? are these multi-master? or are they effectively slaves that also allow zone transfers?<br><br>Steve<br></div><div><br> <br></div></div></div>
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