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1<!-- 2 - Copyright (C) 2004-2012 Internet Systems Consortium, Inc. ("ISC") 3 - Copyright (C) 2000-2003 Internet Software Consortium. 4 - 5 - Permission to use, copy, modify, and/or distribute this software for any 6 - purpose with or without fee is hereby granted, provided that the above 7 - copyright notice and this permission notice appear in all copies. 8 - 9 - THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH 10 - REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 11 - AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT, 12 - INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 13 - LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 14 - OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 15 - PERFORMANCE OF THIS SOFTWARE. 16--> 17<!-- $Id$ --> 18<html> 19<head> 20<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> 21<title>Chapter 8. Troubleshooting</title> 22<meta name="generator" content="DocBook XSL Stylesheets V1.71.1"> 23<link rel="start" href="Bv9ARM.html" title="BIND 9 Administrator Reference Manual"> 24<link rel="up" href="Bv9ARM.html" title="BIND 9 Administrator Reference Manual"> 25<link rel="prev" href="Bv9ARM.ch07.html" title="Chapter 7. BIND 9 Security Considerations"> 26<link rel="next" href="Bv9ARM.ch09.html" title="Appendix A. Appendices"> 27</head> 28<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 29<div class="navheader"> 30<table width="100%" summary="Navigation header"> 31<tr><th colspan="3" align="center">Chapter 8. Troubleshooting</th></tr> 32<tr> 33<td width="20%" align="left"> 34<a accesskey="p" href="Bv9ARM.ch07.html">Prev</a> </td> 35<th width="60%" align="center"> </th> 36<td width="20%" align="right"> <a accesskey="n" href="Bv9ARM.ch09.html">Next</a> 37</td> 38</tr> 39</table> 40<hr> 41</div> 42<div class="chapter" lang="en"> 43<div class="titlepage"><div><div><h2 class="title"> 44<a name="Bv9ARM.ch08"></a>Chapter 8. Troubleshooting</h2></div></div></div> 45<div class="toc"> 46<p><b>Table of Contents</b></p> 47<dl> 48<dt><span class="sect1"><a href="Bv9ARM.ch08.html#id2603371">Common Problems</a></span></dt> 49<dd><dl><dt><span class="sect2"><a href="Bv9ARM.ch08.html#id2603377">It's not working; how can I figure out what's wrong?</a></span></dt></dl></dd> 50<dt><span class="sect1"><a href="Bv9ARM.ch08.html#id2603388">Incrementing and Changing the Serial Number</a></span></dt> 51<dt><span class="sect1"><a href="Bv9ARM.ch08.html#id2603405">Where Can I Get Help?</a></span></dt> 52</dl> 53</div> 54<div class="sect1" lang="en"> 55<div class="titlepage"><div><div><h2 class="title" style="clear: both"> 56<a name="id2603371"></a>Common Problems</h2></div></div></div> 57<div class="sect2" lang="en"> 58<div class="titlepage"><div><div><h3 class="title"> 59<a name="id2603377"></a>It's not working; how can I figure out what's wrong?</h3></div></div></div> 60<p> 61 The best solution to solving installation and 62 configuration issues is to take preventative measures by setting 63 up logging files beforehand. The log files provide a 64 source of hints and information that can be used to figure out 65 what went wrong and how to fix the problem. 66 </p> 67</div> 68</div> 69<div class="sect1" lang="en"> 70<div class="titlepage"><div><div><h2 class="title" style="clear: both"> 71<a name="id2603388"></a>Incrementing and Changing the Serial Number</h2></div></div></div> 72<p> 73 Zone serial numbers are just numbers — they aren't 74 date related. A lot of people set them to a number that 75 represents a date, usually of the form YYYYMMDDRR. 76 Occasionally they will make a mistake and set them to a 77 "date in the future" then try to correct them by setting 78 them to the "current date". This causes problems because 79 serial numbers are used to indicate that a zone has been 80 updated. If the serial number on the slave server is 81 lower than the serial number on the master, the slave 82 server will attempt to update its copy of the zone. 83 </p> 84<p> 85 Setting the serial number to a lower number on the master 86 server than the slave server means that the slave will not perform 87 updates to its copy of the zone. 88 </p> 89<p> 90 The solution to this is to add 2147483647 (2^31-1) to the 91 number, reload the zone and make sure all slaves have updated to 92 the new zone serial number, then reset the number to what you want 93 it to be, and reload the zone again. 94 </p> 95</div> 96<div class="sect1" lang="en"> 97<div class="titlepage"><div><div><h2 class="title" style="clear: both"> 98<a name="id2603405"></a>Where Can I Get Help?</h2></div></div></div> 99<p> 100 The Internet Systems Consortium 101 (<acronym class="acronym">ISC</acronym>) offers a wide range 102 of support and service agreements for <acronym class="acronym">BIND</acronym> and <acronym class="acronym">DHCP</acronym> servers. Four 103 levels of premium support are available and each level includes 104 support for all <acronym class="acronym">ISC</acronym> programs, 105 significant discounts on products 106 and training, and a recognized priority on bug fixes and 107 non-funded feature requests. In addition, <acronym class="acronym">ISC</acronym> offers a standard 108 support agreement package which includes services ranging from bug 109 fix announcements to remote support. It also includes training in 110 <acronym class="acronym">BIND</acronym> and <acronym class="acronym">DHCP</acronym>. 111 </p> 112<p> 113 To discuss arrangements for support, contact 114 <a href="mailto:info@isc.org" target="_top">info@isc.org</a> or visit the 115 <acronym class="acronym">ISC</acronym> web page at 116 <a href="http://www.isc.org/services/support/" target="_top">http://www.isc.org/services/support/</a> 117 to read more. 118 </p> 119</div> 120</div> 121<div class="navfooter"> 122<hr> 123<table width="100%" summary="Navigation footer"> 124<tr> 125<td width="40%" align="left"> 126<a accesskey="p" href="Bv9ARM.ch07.html">Prev</a> </td> 127<td width="20%" align="center"> </td> 128<td width="40%" align="right"> <a accesskey="n" href="Bv9ARM.ch09.html">Next</a> 129</td> 130</tr> 131<tr> 132<td width="40%" align="left" valign="top">Chapter 7. <acronym class="acronym">BIND</acronym> 9 Security Considerations </td> 133<td width="20%" align="center"><a accesskey="h" href="Bv9ARM.html">Home</a></td> 134<td width="40%" align="right" valign="top"> Appendix A. Appendices</td> 135</tr> 136</table> 137</div> 138</body> 139</html>