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+ <title>Petter Reinholdtsen: Idea for a change to LDAP schemas allowing DNS and DHCP info to be combined into one object</title>
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+ <h1>
+ <a href="http://people.skolelinux.org/pere/blog/">Petter Reinholdtsen</a>
+
+ </h1>
+
+ </div>
+
+
+ <div class="entry">
+ <div class="title">Idea for a change to LDAP schemas allowing DNS and DHCP info to be combined into one object</div>
+ <div class="date">2010-06-24 00:35</div>
+ <div class="body">
+<p>A while back, I
+<a href="http://people.skolelinux.org/pere/blog/Time_for_new__LDAP_schemas_replacing_RFC_2307_.html">complained
+about the fact</a> that it is not possible with the provided schemas
+for storing DNS and DHCP information in LDAP to combine the two sets
+of information into one LDAP object representing a computer.</p>
+
+<p>In the mean time, I discovered that a simple fix would be to make
+the dhcpHost object class auxiliary, to allow it to be combined with
+the dNSDomain object class, and thus forming one object for one
+computer when storing both DHCP and DNS information in LDAP.</p>
+
+<p>If I understand this correctly, it is not safe to do this change
+without also changing the assigned number for the object class, and I
+do not know enough about LDAP schema design to do that properly for
+Debian Edu.</p>
+
+<p>Anyway, for future reference, this is how I believe we could change
+the
+<a href="http://tools.ietf.org/html/draft-ietf-dhc-ldap-schema-00">DHCP
+schema</a> to solve at least part of the problem with the LDAP schemas
+available today from IETF.</p>
+
+<pre>
+--- dhcp.schema (revision 65192)
++++ dhcp.schema (working copy)
+@@ -376,7 +376,7 @@
+ objectclass ( 2.16.840.1.113719.1.203.6.6
+ NAME 'dhcpHost'
+ DESC 'This represents information about a particular client'
+- SUP top
++ SUP top AUXILIARY
+ MUST cn
+ MAY (dhcpLeaseDN $ dhcpHWAddress $ dhcpOptionsDN $ dhcpStatements $ dhcpComments $ dhcpOption)
+ X-NDS_CONTAINMENT ('dhcpService' 'dhcpSubnet' 'dhcpGroup') )
+</pre>
+
+<p>I very much welcome clues on how to do this properly for Debian
+Edu/Squeeze. We provide the DHCP schema in our debian-edu-config
+package, and should thus be free to rewrite it as we see fit.</p>
+</div>
+
+ <div class="tags">Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>.</div>
+
+ </div>
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+<h2>Archive</h2>
+<ul>
+
+<li>2010
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