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268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein - Copyright (C) 2000-2017 Internet Systems Consortium, Inc. ("ISC")
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9ffbbce6a624b6051b3d001edcbad1e02c69bd45Andreas Gustafsson<tr><th colspan="3" align="center">Chapter�8.�Troubleshooting</th></tr>
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein<a accesskey="p" href="Bv9ARM.ch07.html">Prev</a>�</td>
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein<td width="20%" align="right">�<a accesskey="n" href="Bv9ARM.ch09.html">Next</a>
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein<div class="titlepage"><div><div><h1 class="title">
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein<a name="Bv9ARM.ch08"></a>Chapter�8.�Troubleshooting</h1></div></div></div>
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein<dt><span class="section"><a href="Bv9ARM.ch08.html#common_problems">Common Problems</a></span></dt>
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein<dd><dl><dt><span class="section"><a href="Bv9ARM.ch08.html#id-1.9.2.2">It's not working; how can I figure out what's wrong?</a></span></dt></dl></dd>
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein<dt><span class="section"><a href="Bv9ARM.ch08.html#id-1.9.3">Incrementing and Changing the Serial Number</a></span></dt>
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein<dt><span class="section"><a href="Bv9ARM.ch08.html#more_help">Where Can I Get Help?</a></span></dt>
9ffbbce6a624b6051b3d001edcbad1e02c69bd45Andreas Gustafsson<div class="titlepage"><div><div><h2 class="title" style="clear: both">
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein<a name="common_problems"></a>Common Problems</h2></div></div></div>
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein<div class="titlepage"><div><div><h3 class="title">
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein<a name="id-1.9.2.2"></a>It's not working; how can I figure out what's wrong?</h3></div></div></div>
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein The best solution to solving installation and
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein configuration issues is to take preventative measures by setting
9ffbbce6a624b6051b3d001edcbad1e02c69bd45Andreas Gustafsson up logging files beforehand. The log files provide a
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein source of hints and information that can be used to figure out
9ffbbce6a624b6051b3d001edcbad1e02c69bd45Andreas Gustafsson what went wrong and how to fix the problem.
9ffbbce6a624b6051b3d001edcbad1e02c69bd45Andreas Gustafsson<div class="titlepage"><div><div><h2 class="title" style="clear: both">
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein<a name="id-1.9.3"></a>Incrementing and Changing the Serial Number</h2></div></div></div>
9ffbbce6a624b6051b3d001edcbad1e02c69bd45Andreas Gustafsson Zone serial numbers are just numbers — they aren't
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein date related. A lot of people set them to a number that
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein represents a date, usually of the form YYYYMMDDRR.
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein Occasionally they will make a mistake and set them to a
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein "date in the future" then try to correct them by setting
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein them to the "current date". This causes problems because
9ffbbce6a624b6051b3d001edcbad1e02c69bd45Andreas Gustafsson serial numbers are used to indicate that a zone has been
9ffbbce6a624b6051b3d001edcbad1e02c69bd45Andreas Gustafsson updated. If the serial number on the slave server is
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein lower than the serial number on the master, the slave
9ffbbce6a624b6051b3d001edcbad1e02c69bd45Andreas Gustafsson server will attempt to update its copy of the zone.
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein Setting the serial number to a lower number on the master
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein server than the slave server means that the slave will not perform
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein updates to its copy of the zone.
9ffbbce6a624b6051b3d001edcbad1e02c69bd45Andreas Gustafsson The solution to this is to add 2147483647 (2^31-1) to the
9ffbbce6a624b6051b3d001edcbad1e02c69bd45Andreas Gustafsson number, reload the zone and make sure all slaves have updated to
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein the new zone serial number, then reset the number to what you want
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein it to be, and reload the zone again.
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein<div class="titlepage"><div><div><h2 class="title" style="clear: both">
9ffbbce6a624b6051b3d001edcbad1e02c69bd45Andreas Gustafsson<a name="more_help"></a>Where Can I Get Help?</h2></div></div></div>
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein The Internet Systems Consortium
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein (<acronym class="acronym">ISC</acronym>) offers a wide range
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein of support and service agreements for <acronym class="acronym">BIND</acronym> and <acronym class="acronym">DHCP</acronym> servers. Four
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein levels of premium support are available and each level includes
9ffbbce6a624b6051b3d001edcbad1e02c69bd45Andreas Gustafsson support for all <acronym class="acronym">ISC</acronym> programs,
9ffbbce6a624b6051b3d001edcbad1e02c69bd45Andreas Gustafsson significant discounts on products
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein and training, and a recognized priority on bug fixes and
9ffbbce6a624b6051b3d001edcbad1e02c69bd45Andreas Gustafsson non-funded feature requests. In addition, <acronym class="acronym">ISC</acronym> offers a standard
9ffbbce6a624b6051b3d001edcbad1e02c69bd45Andreas Gustafsson support agreement package which includes services ranging from bug
9ffbbce6a624b6051b3d001edcbad1e02c69bd45Andreas Gustafsson fix announcements to remote support. It also includes training in
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein <acronym class="acronym">BIND</acronym> and <acronym class="acronym">DHCP</acronym>.
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein To discuss arrangements for support, contact
9ffbbce6a624b6051b3d001edcbad1e02c69bd45Andreas Gustafsson <a class="link" href="mailto:info@isc.org" target="_top">info@isc.org</a> or visit the
9ffbbce6a624b6051b3d001edcbad1e02c69bd45Andreas Gustafsson <acronym class="acronym">ISC</acronym> web page at
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein <a class="link" href="http://www.isc.org/services/support/" target="_top">http://www.isc.org/services/support/</a>
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein to read more.
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein<a accesskey="p" href="Bv9ARM.ch07.html">Prev</a>�</td>
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein<td width="40%" align="right">�<a accesskey="n" href="Bv9ARM.ch09.html">Next</a>
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein<td width="40%" align="left" valign="top">Chapter�7.�<acronym class="acronym">BIND</acronym> 9 Security Considerations�</td>
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein<td width="20%" align="center"><a accesskey="h" href="Bv9ARM.html">Home</a></td>
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein<td width="40%" align="right" valign="top">�Appendix�A.�Release Notes</td>
268a4475065fe6a8cd7cc707820982cf5e98f430Rob Austein<p xmlns:db="http://docbook.org/ns/docbook" style="text-align: center;">BIND 9.11.2 (Extended Support Version)</p>