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<p class="MsoNormal"><span style="color:black">Guys,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"> REFRESH is set to 1 minute. That’s not a long time to wait. Just do a packet capture and see if the slave is issuing zone-refresh queries regularly in the 30-second-to-1-minute range (it’s randomized,
of course, between REFRESH/2 and full REFRESH). <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black">If the slave isn’t issuing refreshes, then check whether the zone got loaded properly as a slave zone in the first place, and that the masters clause is set properly.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black">If the slave *<b>is</b>* issuing refreshes, is it getting a response? Are the refresh queries even showing up on the master side?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black">If the refresh queries are getting a response, but there’s no AXFR/IXFR following subsequently, look in the log files for some sort of resource issue, e.g. concurrent zone transfers or something of that nature.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black"> - Kevin<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> bind-users-bounces@lists.isc.org [mailto:bind-users-bounces@lists.isc.org]
<b>On Behalf Of </b>John W. Blue<br>
<b>Sent:</b> Friday, February 19, 2016 2:19 PM<br>
<b>To:</b> David Li<br>
<b>Cc:</b> BIND Users<br>
<b>Subject:</b> Re: A Zone Transfer Question<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif"">"kick off" as in update the zone and not by using dig.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif"">John<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif"">Sent from <a href="http://www.9folders.com/">
<span style="color:#009BDF;text-decoration:none">Nine</span></a><o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> "John W. Blue" <<a href="mailto:john.blue@rrcic.com">john.blue@rrcic.com</a>><br>
<b>Sent:</b> Feb 19, 2016 1:17 PM<br>
<b>To:</b> David Li<br>
<b>Cc:</b> BIND Users<br>
<b>Subject:</b> Re: A Zone Transfer Question</span><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif"">Nothing in the logs, eg? Well so much for getting an easy resolution. :D<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif"">If you trust your conf files and logs are clean, I personally next to turn to tcpdump. You really need to know what (if anything) is being placed on the wire. Something like this should
get you started:<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif"">tcpdump -i eth0 -n port domain<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif"">Kick off a transfer and see what happens.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif"">John<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif""><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-family:"Calibri","sans-serif"">Sent from <a href="http://www.9folders.com/">
<span style="color:#009BDF;text-decoration:none">Nine</span></a><o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> David Li <<a href="mailto:dlipubkey@gmail.com">dlipubkey@gmail.com</a>><br>
<b>Sent:</b> Feb 19, 2016 1:04 PM<br>
<b>To:</b> John W. Blue<br>
<b>Cc:</b> BIND Users<br>
<b>Subject:</b> Re: A Zone Transfer Question</span><o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt">Hi John,<br>
<br>
Nothing in the /var/log/messages indicates transfer problems. In fact<br>
I don't think the transfer ever started by itself for some reason<br>
until I manually used "dig" to initiate.<br>
<br>
David<br>
<br>
On Fri, Feb 19, 2016 at 9:00 AM, John W. Blue <<a href="mailto:john.blue@rrcic.com">john.blue@rrcic.com</a>> wrote:<br>
> Hello David,<br>
><br>
> You can get started by checking your log files to see if named is<br>
> complaining about anything it might not like that is preventing the<br>
> transfer.<br>
><br>
> John<br>
><br>
> Sent from Nine<br>
><br>
> From: David Li <<a href="mailto:dlipubkey@gmail.com">dlipubkey@gmail.com</a>><br>
> Sent: Feb 19, 2016 10:46 AM<br>
> To: BIND Users<br>
> Subject: A Zone Transfer Question<br>
><br>
> This is my first time to try master slave configuration. Here is a<br>
> brief description:<br>
><br>
> I have two Centos 7.1 VMs - each is configured for a zone. VM1 is the<br>
> master for zone1 and slave for zone2. VM2 is master for zone2 and<br>
> slave for zone1. Both zones uses DNS Dynamic Update from DHCP<br>
> servers on the same VM<br>
> to update the A records in their zone files. No DNSSEC configured.<br>
><br>
><br>
> To start, everything seems to be working fine. I have one host in each<br>
> zone and they can resolve each other fine.<br>
><br>
> Now I add a new host to zone1 and its sequence number has been bumped<br>
> up. I read that when the zone1 file changes, it will automatically<br>
> notify its slave zone (ie. zone2) to start a zone transfer after 15<br>
> min. This never happened. Then I restarted named on VM2 and hoped it<br>
> would pull the new zone1 file. This didn't happened either.<br>
> Eventually I have to either restart the VM2 or use dig to start the<br>
> zone transfer.<br>
><br>
> Can anyone spot anything obviously wrong here? Do I need to post my<br>
> zone file and named.conf?<br>
><br>
><br>
> Thanks.<br>
><br>
> David<br>
> _______________________________________________<br>
> Please visit <a href="https://lists.isc.org/mailman/listinfo/bind-users">https://lists.isc.org/mailman/listinfo/bind-users</a> to<br>
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