<html>
<head>
<title>Petter Reinholdtsen: entries from March 2009</title>
- <link rel="stylesheet" type="text/css" media="screen" href="../../../style.css">
+ <link rel="stylesheet" type="text/css" media="screen" href="http://people.skolelinux.org/pere/blog/style.css">
<link rel="alternate" title="RSS Feed" href="03.rss" type="application/rss+xml">
</head>
<body>
<div class="title">
<h1>
- <a href="../../../">Petter Reinholdtsen</a>
+ <a href="http://people.skolelinux.org/pere/blog/">Petter Reinholdtsen</a>
</h1>
<div class="entry">
<div class="title">
- <a href="../../../Teknisk_program_for_Go_Open_2009_er_nesten_ferdig.html">Teknisk program for Go Open 2009 er nesten ferdig</a>
+ <a href="http://people.skolelinux.org/pere/blog/Teknisk_program_for_Go_Open_2009_er_nesten_ferdig.html">Teknisk program for Go Open 2009 er nesten ferdig</a>
</div>
<div class="date">
2009-03-05 22:30
- Tags: <a href="../../../tags/norsk">norsk</a>, <a href="../../../tags/nuug">nuug</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>.
</div>
</div>
<div class="entry">
<div class="title">
- <a href="../../../Lisensvalg_for_NUUG_opptakene_endelig_p___plass.html">Lisensvalg for NUUG-opptakene endelig på plass</a>
+ <a href="http://people.skolelinux.org/pere/blog/Lisensvalg_for_NUUG_opptakene_endelig_p___plass.html">Lisensvalg for NUUG-opptakene endelig på plass</a>
</div>
<div class="date">
2009-03-06 21:20
- Tags: <a href="../../../tags/norsk">norsk</a>, <a href="../../../tags/nuug">nuug</a>, <a href="../../../tags/video">video</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
</div>
</div>
<div class="entry">
<div class="title">
- <a href="../../../Frikanalen_og_jul_i_studentr__det.html">Frikanalen og jul i studentrådet</a>
+ <a href="http://people.skolelinux.org/pere/blog/Frikanalen_og_jul_i_studentr__det.html">Frikanalen og jul i studentrådet</a>
</div>
<div class="date">
2009-03-11 23:40
- Tags: <a href="../../../tags/norsk">norsk</a>, <a href="../../../tags/nuug">nuug</a>, <a href="../../../tags/video">video</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>, <a href="http://people.skolelinux.org/pere/blog/tags/video">video</a>.
</div>
</div>
<div class="entry">
<div class="title">
- <a href="../../../Testing_av_reprap_elektronikken_igang.html">Testing av reprap-elektronikken igang</a>
+ <a href="http://people.skolelinux.org/pere/blog/Testing_av_reprap_elektronikken_igang.html">Testing av reprap-elektronikken igang</a>
</div>
<div class="date">
2009-03-12 16:00
- Tags: <a href="../../../tags/3d-printer">3d-printer</a>, <a href="../../../tags/norsk">norsk</a>, <a href="../../../tags/nuug">nuug</a>, <a href="../../../tags/reprap">reprap</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer</a>, <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>, <a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap</a>.
</div>
</div>
<div class="entry">
<div class="title">
- <a href="../../../En_skam_at_det_ikke_finnes_ordrett_referat_fra_norske_domstoler.html">En skam at det ikke finnes ordrett referat fra norske domstoler</a>
+ <a href="http://people.skolelinux.org/pere/blog/En_skam_at_det_ikke_finnes_ordrett_referat_fra_norske_domstoler.html">En skam at det ikke finnes ordrett referat fra norske domstoler</a>
</div>
<div class="date">
2009-03-13 18:00
- Tags: <a href="../../../tags/norsk">norsk</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>.
</div>
</div>
<div class="entry">
<div class="title">
- <a href="../../../Avisene_i_endring.html">Avisene i endring</a>
+ <a href="http://people.skolelinux.org/pere/blog/Avisene_i_endring.html">Avisene i endring</a>
</div>
<div class="date">
2009-03-15 22:15
- Tags: <a href="../../../tags/norsk">norsk</a>, <a href="../../../tags/nuug">nuug</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>.
</div>
</div>
<div class="entry">
<div class="title">
- <a href="../../../F__rste_reprap_integreringsfors__k___Z_aksen_beveger_seg.html">Første reprap-integreringsforsøk - Z-aksen beveger seg</a>
+ <a href="http://people.skolelinux.org/pere/blog/F__rste_reprap_integreringsfors__k___Z_aksen_beveger_seg.html">Første reprap-integreringsforsøk - Z-aksen beveger seg</a>
</div>
<div class="date">
2009-03-19 22:15
- Tags: <a href="../../../tags/3d-printer">3d-printer</a>, <a href="../../../tags/norsk">norsk</a>, <a href="../../../tags/nuug">nuug</a>, <a href="../../../tags/reprap">reprap</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer</a>, <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>, <a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap</a>.
</div>
</div>
<div class="entry">
<div class="title">
- <a href="../../../Vitenskapens_dogmer___.html">Vitenskapens dogmer...</a>
+ <a href="http://people.skolelinux.org/pere/blog/Vitenskapens_dogmer___.html">Vitenskapens dogmer...</a>
</div>
<div class="date">
2009-03-27 11:30
- Tags: <a href="../../../tags/norsk">norsk</a>, <a href="../../../tags/vitenskap">vitenskap</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap</a>.
</div>
</div>
<div class="entry">
<div class="title">
- <a href="../../../Hva_er_egentlig_en___pen_standard_.html">Hva er egentlig en åpen standard?</a>
+ <a href="http://people.skolelinux.org/pere/blog/Hva_er_egentlig_en___pen_standard_.html">Hva er egentlig en åpen standard?</a>
</div>
<div class="date">
2009-03-28 10:50
- Tags: <a href="../../../tags/norsk">norsk</a>, <a href="../../../tags/nuug">nuug</a>, <a href="../../../tags/standard">standard</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>, <a href="http://people.skolelinux.org/pere/blog/tags/standard">standard</a>.
</div>
</div>
<div class="padding"></div>
- <p style="text-align: right;"><a href="03.rss"><img src="../../../xml.gif" alt="RSS Feed" width="36" height="14"></a></p>
+<div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Time_for_new__LDAP_schemas_replacing_RFC_2307_.html">Time for new LDAP schemas replacing RFC 2307?</a>
+ </div>
+ <div class="date">
+ 2009-03-29 20:30
+ </div>
+
+ <div class="body">
+
+<p>The state of standardized LDAP schemas on Linux is far from
+optimal. There is RFC 2307 documenting one way to store NIS maps in
+LDAP, and a modified version of this normally called RFC 2307bis, with
+some modifications to be compatible with Active Directory. The RFC
+specification handle the content of a lot of system databases, but do
+not handle DNS zones and DHCP configuration.</p>
+
+<p>In <a href="http://www.skolelinux.org/">Debian Edu/Skolelinux</a>,
+we would like to store information about users, SMB clients/hosts,
+filegroups, netgroups (users and hosts), DHCP and DNS configuration,
+and LTSP configuration in LDAP. These objects have a lot in common,
+but with the current LDAP schemas it is not possible to have one
+object per entity. For example, one need to have at least three LDAP
+objects for a given computer, one with the SMB related stuff, one with
+DNS information and another with DHCP information. The schemas
+provided for DNS and DHCP are impossible to combine into one LDAP
+object. In addition, it is impossible to implement quick queries for
+netgroup membership, because of the way NIS triples are implemented.
+It just do not scale. I believe it is time for a few RFC
+specifications to cleam up this mess.</p>
+
+<p>I would like to have one LDAP object representing each computer in
+the network, and this object can then keep the SMB (ie host key), DHCP
+(mac address/name) and DNS (name/IP address) settings in one place.
+It need to be efficently stored to make sure it scale well.</p>
+
+<p>I would also like to have a quick way to map from a user or
+computer and to the net group this user or computer is a member.</p>
+
+<p>Active Directory have done a better job than unix heads like myself
+in this regard, and the unix side need to catch up. Time to start a
+new IETF work group?</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>
+ <div class="padding"></div>
+
+<div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Returning_from_Skolelinux_developer_gathering.html">Returning from Skolelinux developer gathering</a>
+ </div>
+ <div class="date">
+ 2009-03-29 21:00
+ </div>
+
+ <div class="body">
+
+<p>I'm sitting on the train going home from this weekends Debian
+Edu/Skolelinux development gathering. I got a bit done tuning the
+desktop, and looked into the dynamic service location protocol
+implementation avahi. It look like it could be useful for us. Almost
+30 people participated, and I believe it was a great environment to
+get to know the Skolelinux system. Walter Bender, involved in the
+development of the Sugar educational platform, presented his stuff and
+also helped me improve my OLPC installation. He also showed me that
+his Turtle Art application can be used in standalone mode, and we
+agreed that I would help getting it packaged for Debian. As a
+standalone application it would be great for Debian Edu. We also
+tried to get the video conferencing working with two OLPCs, but that
+proved to be too hard for us. The application seem to need more work
+before it is ready for me. I look forward to getting home and relax
+now. :)</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>
+ <div class="padding"></div>
+
+<div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Standardize_on_protocols_and_formats__not_vendors_and_applications.html">Standardize on protocols and formats, not vendors and applications</a>
+ </div>
+ <div class="date">
+ 2009-03-30 11:50
+ </div>
+
+ <div class="body">
+
+<p>Where I work at the University of Oslo, one decision stand out as a
+very good one to form a long lived computer infrastructure. It is the
+simple one, lost by many in todays computer industry: Standardize on
+open network protocols and open exchange/storage formats, not applications.
+Applications come and go, while protocols and files tend to stay, and
+thus one want to make it easy to change application and vendor, while
+avoiding conversion costs and locking users to a specific platform or
+application.</p>
+
+<p>This approach make it possible to replace the client applications
+independently of the server applications. One can even allow users to
+use several different applications as long as they handle the selected
+protocol and format. In the normal case, only one client application
+is recommended and users only get help if they choose to use this
+application, but those that want to deviate from the easy path are not
+blocked from doing so.</p>
+
+<p>It also allow us to replace the server side without forcing the
+users to replace their applications, and thus allow us to select the
+best server implementation at any moment, when scale and resouce
+requirements change.</p>
+
+<p>I strongly recommend standardizing - on open network protocols and
+open formats, but I would never recommend standardizing on a single
+application that do not use open network protocol or open formats.</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/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>, <a href="http://people.skolelinux.org/pere/blog/tags/standard">standard</a>.
+
+ </div>
+</div>
+ <div class="padding"></div>
+
+ <p style="text-align: right;"><a href="03.rss"><img src="http://people.skolelinux.org/pere/blog/xml.gif" alt="RSS Feed" width="36" height="14"></a></p>
<h2>Archive</h2>
<ul>
+<li>2010
+<ul>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2010/01/">January (2)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2010/02/">February (1)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2010/03/">March (3)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2010/04/">April (3)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2010/05/">May (9)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2010/06/">June (9)</a></li>
+
+</ul></li>
+
<li>2009
<ul>
-<li><a href="../../../archive/2009/01/">January (8)</a></li>
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2009/01/">January (8)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2009/03/">March (12)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2009/04/">April (10)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2009/05/">May (9)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2009/06/">June (3)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
-<li><a href="../../../archive/2009/02/">February (8)</a></li>
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</a></li>
-<li><a href="../../../archive/2009/03/">March (9)</a></li>
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2009/09/">September (1)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2009/10/">October (2)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2009/11/">November (3)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2009/12/">December (3)</a></li>
</ul></li>
<li>2008
<ul>
-<li><a href="../../../archive/2008/11/">November (5)</a></li>
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2008/11/">November (5)</a></li>
-<li><a href="../../../archive/2008/12/">December (7)</a></li>
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2008/12/">December (7)</a></li>
</ul></li>
<h2>Tags</h2>
<ul>
- <li><a href="../../../tags/3d-printer">3d-printer (9)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (11)</a></li>
+
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/amiga">amiga (1)</a></li>
+
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/aros">aros (1)</a></li>
+
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/bootsystem">bootsystem (10)</a></li>
+
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/debian">debian (26)</a></li>
+
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (26)</a></li>
+
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (37)</a></li>
+
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (1)</a></li>
- <li><a href="../../../tags/amiga">amiga (1)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (7)</a></li>
- <li><a href="../../../tags/aros">aros (1)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/kart">kart (2)</a></li>
- <li><a href="../../../tags/debian">debian (3)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/lenker">lenker (1)</a></li>
- <li><a href="../../../tags/debian edu">debian edu (4)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
- <li><a href="../../../tags/english">english (6)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (5)</a></li>
- <li><a href="../../../tags/fiksgatami">fiksgatami (1)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (68)</a></li>
- <li><a href="../../../tags/ltsp">ltsp (1)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (76)</a></li>
- <li><a href="../../../tags/multimedia">multimedia (2)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (13)</a></li>
- <li><a href="../../../tags/norsk">norsk (31)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern (12)</a></li>
- <li><a href="../../../tags/nuug">nuug (27)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap (10)</a></li>
- <li><a href="../../../tags/personvern">personvern (3)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
- <li><a href="../../../tags/reprap">reprap (9)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (9)</a></li>
- <li><a href="../../../tags/rss">rss (1)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (3)</a></li>
- <li><a href="../../../tags/standard">standard (1)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/standard">standard (12)</a></li>
- <li><a href="../../../tags/stavekontroll">stavekontroll (1)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (1)</a></li>
- <li><a href="../../../tags/video">video (5)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (10)</a></li>
- <li><a href="../../../tags/vitenskap">vitenskap (1)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (1)</a></li>
- <li><a href="../../../tags/web">web (2)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (6)</a></li>
</ul>
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