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<title>Petter Reinholdtsen: Entries Tagged english</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">
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<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="../../The_sorry_state_of_multimedia_browser_plugins_in_Debian.html">The sorry state of multimedia browser plugins in Debian</a>
+ <a href="http://people.skolelinux.org/pere/blog/The_sorry_state_of_multimedia_browser_plugins_in_Debian.html">The sorry state of multimedia browser plugins in Debian</a>
</div>
<div class="date">
2008-11-25 00:10
- Tags: <a href="../../tags/debian">debian</a>, <a href="../../tags/debian edu">debian edu</a>, <a href="../../tags/english">english</a>, <a href="../../tags/multimedia">multimedia</a>, <a href="../../tags/web">web</a>.
+ 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/multimedia">multimedia</a>, <a href="http://people.skolelinux.org/pere/blog/tags/web">web</a>.
</div>
</div>
<div class="entry">
<div class="title">
- <a href="../../Devcamp_brought_us_closer_to_the_Lenny_based_Debian_Edu_release.html">Devcamp brought us closer to the Lenny based Debian Edu release</a>
+ <a href="http://people.skolelinux.org/pere/blog/Devcamp_brought_us_closer_to_the_Lenny_based_Debian_Edu_release.html">Devcamp brought us closer to the Lenny based Debian Edu release</a>
</div>
<div class="date">
2008-12-07 12:00
- Tags: <a href="../../tags/debian">debian</a>, <a href="../../tags/debian edu">debian edu</a>, <a href="../../tags/english">english</a>, <a href="../../tags/ltsp">ltsp</a>.
+ 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/ltsp">ltsp</a>.
</div>
</div>
<div class="entry">
<div class="title">
- <a href="../../Software_video_mixer_on_a_USB_stick.html">Software video mixer on a USB stick</a>
+ <a href="http://people.skolelinux.org/pere/blog/Software_video_mixer_on_a_USB_stick.html">Software video mixer on a USB stick</a>
</div>
<div class="date">
2008-12-28 15:40
- Tags: <a href="../../tags/english">english</a>, <a href="../../tags/nuug">nuug</a>, <a href="../../tags/video">video</a>.
+ Tags: <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/video">video</a>.
</div>
</div>
<div class="entry">
<div class="title">
- <a href="../../When_web_browser_developers_make_a_video_player___.html">When web browser developers make a video player...</a>
+ <a href="http://people.skolelinux.org/pere/blog/When_web_browser_developers_make_a_video_player___.html">When web browser developers make a video player...</a>
</div>
<div class="date">
2009-01-17 18:50
- Tags: <a href="../../tags/english">english</a>, <a href="../../tags/multimedia">multimedia</a>, <a href="../../tags/nuug">nuug</a>, <a href="../../tags/video">video</a>, <a href="../../tags/web">web</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia</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>, <a href="http://people.skolelinux.org/pere/blog/tags/web">web</a>.
</div>
</div>
<div class="entry">
<div class="title">
- <a href="../../Using_bar_codes_at_a_computing_center.html">Using bar codes at a computing center</a>
+ <a href="http://people.skolelinux.org/pere/blog/Using_bar_codes_at_a_computing_center.html">Using bar codes at a computing center</a>
</div>
<div class="date">
2009-02-20 08:50
- Tags: <a href="../../tags/english">english</a>, <a href="../../tags/nuug">nuug</a>.
+ Tags: <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="entry">
<div class="title">
- <a href="../../Checking_server_hardware_support_status_for_Dell__HP_and_IBM_servers.html">Checking server hardware support status for Dell, HP and IBM servers</a>
+ <a href="http://people.skolelinux.org/pere/blog/Checking_server_hardware_support_status_for_Dell__HP_and_IBM_servers.html">Checking server hardware support status for Dell, HP and IBM servers</a>
</div>
<div class="date">
2009-02-28 23:50
- Tags: <a href="../../tags/english">english</a>, <a href="../../tags/nuug">nuug</a>.
+ Tags: <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="entry">
<div class="title">
- <a href="../../Time_for_new__LDAP_schemas_replacing_RFC_2307_.html">Time for new LDAP schemas replacing RFC 2307?</a>
+ <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
- Tags: <a href="../../tags/debian">debian</a>, <a href="../../tags/debian edu">debian edu</a>, <a href="../../tags/english">english</a>, <a href="../../tags/nuug">nuug</a>.
+ 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="entry">
<div class="title">
- <a href="../../Returning_from_Skolelinux_developer_gathering.html">Returning from Skolelinux developer gathering</a>
+ <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
- Tags: <a href="../../tags/debian">debian</a>, <a href="../../tags/debian edu">debian edu</a>, <a href="../../tags/english">english</a>, <a href="../../tags/nuug">nuug</a>.
+ 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="entry">
<div class="title">
- <a href="../../Standardize_on_protocols_and_formats__not_vendors_and_applications.html">Standardize on protocols and formats, not vendors and applications</a>
+ <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
- Tags: <a href="../../tags/debian">debian</a>, <a href="../../tags/english">english</a>, <a href="../../tags/nuug">nuug</a>, <a href="../../tags/standard">standard</a>.
+ 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="entry">
<div class="title">
- <a href="../../Recording_video_from_cron_using_VLC.html">Recording video from cron using VLC</a>
+ <a href="http://people.skolelinux.org/pere/blog/Recording_video_from_cron_using_VLC.html">Recording video from cron using VLC</a>
</div>
<div class="date">
2009-04-05 10:00
- Tags: <a href="../../tags/english">english</a>, <a href="../../tags/nuug">nuug</a>, <a href="../../tags/video">video</a>.
+ Tags: <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/video">video</a>.
</div>
</div>
<div class="entry">
<div class="title">
- <a href="../../No_patch_is_not_better_than_a_useless_patch.html">No patch is not better than a useless patch</a>
+ <a href="http://people.skolelinux.org/pere/blog/No_patch_is_not_better_than_a_useless_patch.html">No patch is not better than a useless patch</a>
</div>
<div class="date">
2009-04-28 09:30
- Tags: <a href="../../tags/debian">debian</a>, <a href="../../tags/english">english</a>, <a href="../../tags/nuug">nuug</a>.
+ 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>.
</div>
</div>
<div class="entry">
<div class="title">
- <a href="../../Two_projects_that_have_improved_the_quality_of_free_software_a_lot.html">Two projects that have improved the quality of free software a lot</a>
+ <a href="http://people.skolelinux.org/pere/blog/Two_projects_that_have_improved_the_quality_of_free_software_a_lot.html">Two projects that have improved the quality of free software a lot</a>
</div>
<div class="date">
2009-05-02 15:00
- Tags: <a href="../../tags/debian">debian</a>, <a href="../../tags/english">english</a>.
+ 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>.
</div>
</div>
<div class="entry">
<div class="title">
- <a href="../../Debian_boots_quicker_and_quicker.html">Debian boots quicker and quicker</a>
+ <a href="http://people.skolelinux.org/pere/blog/Debian_boots_quicker_and_quicker.html">Debian boots quicker and quicker</a>
</div>
<div class="date">
2009-06-24 21:40
- Tags: <a href="../../tags/debian">debian</a>, <a href="../../tags/english">english</a>.
+ 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>.
</div>
</div>
<div class="entry">
<div class="title">
- <a href="../../Taking_over_sysvinit_development.html">Taking over sysvinit development</a>
+ <a href="http://people.skolelinux.org/pere/blog/Taking_over_sysvinit_development.html">Taking over sysvinit development</a>
</div>
<div class="date">
2009-07-22 23:00
- Tags: <a href="../../tags/debian">debian</a>, <a href="../../tags/english">english</a>, <a href="../../tags/nuug">nuug</a>.
+ 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>.
</div>
</div>
<div class="entry">
<div class="title">
- <a href="../../Debian_has_switched_to_dependency_based_boot_sequencing.html">Debian has switched to dependency based boot sequencing</a>
+ <a href="http://people.skolelinux.org/pere/blog/Debian_has_switched_to_dependency_based_boot_sequencing.html">Debian has switched to dependency based boot sequencing</a>
</div>
<div class="date">
2009-07-27 23:50
- Tags: <a href="../../tags/debian">debian</a>, <a href="../../tags/english">english</a>, <a href="../../tags/nuug">nuug</a>.
+ 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>.
</div>
</div>
<div class="entry">
<div class="title">
- <a href="../../ISO_still_hope_to_fix_OOXML.html">ISO still hope to fix OOXML</a>
+ <a href="http://people.skolelinux.org/pere/blog/ISO_still_hope_to_fix_OOXML.html">ISO still hope to fix OOXML</a>
</div>
<div class="date">
2009-08-08 14:00
- Tags: <a href="../../tags/english">english</a>, <a href="../../tags/nuug">nuug</a>, <a href="../../tags/standard">standard</a>.
+ Tags: <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="entry">
<div class="title">
- <a href="../../Relative_popularity_of_document_formats__MS_Office_vs__ODF_.html">Relative popularity of document formats (MS Office vs. ODF)</a>
+ <a href="http://people.skolelinux.org/pere/blog/Relative_popularity_of_document_formats__MS_Office_vs__ODF_.html">Relative popularity of document formats (MS Office vs. ODF)</a>
</div>
<div class="date">
2009-08-12 15:50
- Tags: <a href="../../tags/english">english</a>, <a href="../../tags/nuug">nuug</a>, <a href="../../tags/standard">standard</a>, <a href="../../tags/web">web</a>.
+ Tags: <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>, <a href="http://people.skolelinux.org/pere/blog/tags/web">web</a>.
</div>
</div>
<div class="entry">
<div class="title">
- <a href="../../Automatic_Munin_and_Nagios_configuration.html">Automatic Munin and Nagios configuration</a>
+ <a href="http://people.skolelinux.org/pere/blog/Automatic_Munin_and_Nagios_configuration.html">Automatic Munin and Nagios configuration</a>
</div>
<div class="date">
2010-01-27 15:15
- Tags: <a href="../../tags/debian edu">debian edu</a>, <a href="../../tags/english">english</a>, <a href="../../tags/nuug">nuug</a>.
+ Tags: <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="entry">
<div class="title">
- <a href="../../Debian_Edu___Skolelinux_based_on_Lenny_released__work_continues.html">Debian Edu / Skolelinux based on Lenny released, work continues</a>
+ <a href="http://people.skolelinux.org/pere/blog/Debian_Edu___Skolelinux_based_on_Lenny_released__work_continues.html">Debian Edu / Skolelinux based on Lenny released, work continues</a>
</div>
<div class="date">
2010-02-11 17:15
- Tags: <a href="../../tags/debian edu">debian edu</a>, <a href="../../tags/english">english</a>, <a href="../../tags/nuug">nuug</a>.
+ Tags: <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="entry">
<div class="title">
- <a href="../../After_6_years_of_waiting__the_Xreset_d_feature_is_implemented.html">After 6 years of waiting, the Xreset.d feature is implemented</a>
+ <a href="http://people.skolelinux.org/pere/blog/After_6_years_of_waiting__the_Xreset_d_feature_is_implemented.html">After 6 years of waiting, the Xreset.d feature is implemented</a>
</div>
<div class="date">
2010-03-06 18:15
- Tags: <a href="../../tags/debian edu">debian edu</a>, <a href="../../tags/english">english</a>, <a href="../../tags/nuug">nuug</a>.
+ Tags: <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="entry">
<div class="title">
- <a href="../../Kerberos_for_Debian_Edu_Squeeze_.html">Kerberos for Debian Edu/Squeeze?</a>
+ <a href="http://people.skolelinux.org/pere/blog/Kerberos_for_Debian_Edu_Squeeze_.html">Kerberos for Debian Edu/Squeeze?</a>
</div>
<div class="date">
2010-04-14 17:20
- Tags: <a href="../../tags/debian edu">debian edu</a>, <a href="../../tags/english">english</a>, <a href="../../tags/nuug">nuug</a>.
+ Tags: <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="entry">
<div class="title">
- <a href="../../Great_book___Content__Selected_Essays_on_Technology__Creativity__Copyright__and_the_Future_of_the_Future_.html">Great book: "Content: Selected Essays on Technology, Creativity, Copyright, and the Future of the Future"</a>
+ <a href="http://people.skolelinux.org/pere/blog/Great_book___Content__Selected_Essays_on_Technology__Creativity__Copyright__and_the_Future_of_the_Future_.html">Great book: "Content: Selected Essays on Technology, Creativity, Copyright, and the Future of the Future"</a>
</div>
<div class="date">
2010-04-19 17:10
- Tags: <a href="../../tags/english">english</a>, <a href="../../tags/fildeling">fildeling</a>, <a href="../../tags/nuug">nuug</a>, <a href="../../tags/opphavsrett">opphavsrett</a>, <a href="../../tags/personvern">personvern</a>, <a href="../../tags/sikkerhet">sikkerhet</a>, <a href="../../tags/web">web</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</a>, <a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett</a>, <a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern</a>, <a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet</a>, <a href="http://people.skolelinux.org/pere/blog/tags/web">web</a>.
</div>
</div>
<div class="entry">
<div class="title">
- <a href="../../Thoughts_on_roaming_laptop_setup_for_Debian_Edu.html">Thoughts on roaming laptop setup for Debian Edu</a>
+ <a href="http://people.skolelinux.org/pere/blog/Thoughts_on_roaming_laptop_setup_for_Debian_Edu.html">Thoughts on roaming laptop setup for Debian Edu</a>
</div>
<div class="date">
2010-04-28 20:40
- Tags: <a href="../../tags/debian edu">debian edu</a>, <a href="../../tags/english">english</a>, <a href="../../tags/nuug">nuug</a>.
+ Tags: <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>
- <p style="text-align: right;"><a href="english.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/Forcing_new_users_to_change_their_password_on_first_login.html">Forcing new users to change their password on first login</a>
+ </div>
+ <div class="date">
+ 2010-05-02 13:47
+ </div>
+
+ <div class="body">
+
+<p>One interesting feature in Active Directory, is the ability to
+create a new user with an expired password, and thus force the user to
+change the password on the first login attempt.</p>
+
+<p>I'm not quite sure how to do that with the LDAP setup in Debian
+Edu, but did some initial testing with a local account. The account
+and password aging information is available in /etc/shadow, but
+unfortunately, it is not possible to specify an expiration time for
+passwords, only a maximum age for passwords.</p>
+
+<p>A freshly created account (using adduser test) will have these
+settings in /etc/shadow:</p>
+
+<blockquote><pre>
+root@tjener:~# chage -l test
+Last password change : May 02, 2010
+Password expires : never
+Password inactive : never
+Account expires : never
+Minimum number of days between password change : 0
+Maximum number of days between password change : 99999
+Number of days of warning before password expires : 7
+root@tjener:~#
+</pre></blockquote>
+
+<p>The only way I could come up with to create a user with an expired
+account, is to change the date of the last password change to the
+lowest value possible (January 1th 1970), and the maximum password age
+to the difference in days between that date and today. To make it
+simple, I went for 30 years (30 * 365 = 10950) and January 2th (to
+avoid testing if 0 is a valid value).</p>
+
+<p>After using these commands to set it up, it seem to work as
+intended:</p>
+
+<blockquote><pre>
+root@tjener:~# chage -d 1 test; chage -M 10950 test
+root@tjener:~# chage -l test
+Last password change : Jan 02, 1970
+Password expires : never
+Password inactive : never
+Account expires : never
+Minimum number of days between password change : 0
+Maximum number of days between password change : 10950
+Number of days of warning before password expires : 7
+root@tjener:~#
+</pre></blockquote>
+
+<p>So far I have tested this with ssh and console, and kdm (in
+Squeeze) login, and all ask for a new password before login in the
+user (with ssh, I was thrown out and had to log in again).</p>
+
+<p>Perhaps we should set up something similar for Debian Edu, to make
+sure only the user itself have the account password?</p>
+
+<p>If you want to comment on or help out with implementing this for
+Debian Edu, please contact us on debian-edu@lists.debian.org.</p>
+
+<p>Update 2010-05-02 17:20: Paul Tötterman tells me on IRC that the
+shadow(8) page in Debian/testing now state that setting the date of
+last password change to zero (0) will force the password to be changed
+on the first login. This was not mentioned in the manual in Lenny, so
+I did not notice this in my initial testing. I have tested it on
+Squeeze, and '<tt>chage -d 0 username</tt>' do work there. I have not
+tested it on Lenny yet.</p>
+
+<p>Update 2010-05-02-19:05: Jim Paris tells me via email that an
+equivalent command to expire a password is '<tt>passwd -e
+username</tt>', which insert zero into the date of the last password
+change.</p>
+
+ </div>
+ <div class="tags">
+
+
+
+ Tags: <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>, <a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet</a>.
+
+ </div>
+</div>
+<div class="padding"></div>
+
+<div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Parallellizing_the_boot_in_Debian_Squeeze___ready_for_wider_testing.html">Parallellizing the boot in Debian Squeeze - ready for wider testing</a>
+ </div>
+ <div class="date">
+ 2010-05-06 23:25
+ </div>
+
+ <div class="body">
+
+<p>These days, the init.d script dependencies in Squeeze are quite
+complete, so complete that it is actually possible to run all the
+init.d scripts in parallell based on these dependencies. If you want
+to test your Squeeze system, make sure
+<a href="http://wiki.debian.org/LSBInitScripts/DependencyBasedBoot">dependency
+based boot sequencing</a> is enabled, and add this line to
+/etc/default/rcS:</p>
+
+<blockquote><pre>
+CONCURRENCY=makefile
+</pre></blockquote>
+
+<p>That is it. It will cause sysv-rc to use the startpar tool to run
+scripts in parallel using the dependency information stored in
+/etc/init.d/.depend.boot, /etc/init.d/.depend.start and
+/etc/init.d/.depend.stop to order the scripts. Startpar is configured
+to try to start the kdm and gdm scripts as early as possible, and will
+start the facilities required by kdm or gdm as early as possible to
+make this happen.</p>
+
+<p>Give it a try, and see if you like the result. If some services
+fail to start properly, it is most likely because they have incomplete
+init.d script dependencies in their startup script (or some of their
+dependent scripts have incomplete dependencies). Report bugs and get
+the package maintainers to fix it. :)</p>
+
+<p>Running scripts in parallel could be the default in Debian when we
+manage to get the init.d script dependencies complete and correct. I
+expect we will get there in Squeeze+1, if we get manage to test and
+fix the remaining issues.</p>
+
+<p>If you report any problems with dependencies in init.d scripts to
+the BTS, please usertag the report to get it to show up at
+<a href="http://bugs.debian.org/cgi-bin/pkgreport.cgi?users=initscripts-ng-devel@lists.alioth.debian.org">the
+list of usertagged bugs related to this</a>.</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>.
+
+ </div>
+</div>
+<div class="padding"></div>
+
+<div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/systemd__an_interesting_alternative_to_upstart.html">systemd, an interesting alternative to upstart</a>
+ </div>
+ <div class="date">
+ 2010-05-13 22:20
+ </div>
+
+ <div class="body">
+
+<p>The last few days a new boot system called
+<a href="http://www.freedesktop.org/wiki/Software/systemd">systemd</a>
+has been
+<a href="http://0pointer.de/blog/projects/systemd.html">introduced</a>
+
+to the free software world. I have not yet had time to play around
+with it, but it seem to be a very interesting alternative to
+<a href="http://upstart.ubuntu.com/">upstart</a>, and might prove to be
+a good alternative for Debian when we are able to switch to an event
+based boot system. Tollef is
+<a href="http://bugs.debian.org/580814">in the process</a> of getting
+systemd into Debian, and I look forward to seeing how well it work. I
+like the fact that systemd handles init.d scripts with dependency
+information natively, allowing them to run in parallel where upstart
+at the moment do not.</p>
+
+<p>Unfortunately do systemd have the same problem as upstart regarding
+platform support. It only work on recent Linux kernels, and also need
+some new kernel features enabled to function properly. This means
+kFreeBSD and Hurd ports of Debian will need a port or a different boot
+system. Not sure how that will be handled if systemd proves to be the
+way forward.</p>
+
+<p>In the mean time, based on the
+<a href="http://lists.debian.org/debian-devel/2010/05/msg00122.html">input
+on debian-devel@</a> regarding parallel booting in Debian, I have
+decided to enable full parallel booting as the default in Debian as
+soon as possible (probably this weekend or early next week), to see if
+there are any remaining serious bugs in the init.d dependencies. A
+new version of the sysvinit package implementing this change is
+already in experimental. If all go well, Squeeze will be released
+with parallel booting enabled by default.</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>.
+
+ </div>
+</div>
+<div class="padding"></div>
+
+<div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Sitesummary_tip__Listing_MAC_address_of_all_clients.html">Sitesummary tip: Listing MAC address of all clients</a>
+ </div>
+ <div class="date">
+ 2010-05-14 21:10
+ </div>
+
+ <div class="body">
+
+<p>In the recent Debian Edu versions, the
+<a href="http://wiki.debian.org/DebianEdu/HowTo/SiteSummary">sitesummary
+system</a> is used to keep track of the machines in the school
+network. Each machine will automatically report its status to the
+central server after boot and once per night. The network setup is
+also reported, and using this information it is possible to get the
+MAC address of all network interfaces in the machines. This is useful
+to update the DHCP configuration.</p>
+
+<p>To give some idea how to use sitesummary, here is a one-liner to
+ist all MAC addresses of all machines reporting to sitesummary. Run
+this on the collector host:</p>
+
+<blockquote><pre>
+perl -MSiteSummary -e 'for_all_hosts(sub { print join(" ", get_macaddresses(shift)), "\n"; });'
+</pre></blockquote>
+
+<p>This will list all MAC addresses assosiated with all machine, one
+line per machine and with space between the MAC addresses.</p>
+
+<p>To allow system administrators easier job at adding static DHCP
+addresses for hosts, it would be possible to extend this to fetch
+machine information from sitesummary and update the DHCP and DNS
+tables in LDAP using this information. Such tool is unfortunately not
+written yet.</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/sitesummary">sitesummary</a>.
+
+ </div>
+</div>
+<div class="padding"></div>
+
+<div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Parallellized_boot_is_now_the_default_in_Debian_unstable.html">Parallellized boot is now the default in Debian/unstable</a>
+ </div>
+ <div class="date">
+ 2010-05-14 22:40
+ </div>
+
+ <div class="body">
+
+<p>Since this evening, parallel booting is the default in
+Debian/unstable for machines using dependency based boot sequencing.
+Apparently the testing of concurrent booting has been wider than
+expected, if I am to believe the
+<a href="http://lists.debian.org/debian-devel/2010/05/msg00122.html">input
+on debian-devel@</a>, and I concluded a few days ago to move forward
+with the feature this weekend, to give us some time to detect any
+remaining problems before Squeeze is frozen. If serious problems are
+detected, it is simple to change the default back to sequential boot.
+The upload of the new sysvinit package also activate a new upstream
+version.</p>
+
+More information about
+<a href="http://wiki.debian.org/LSBInitScripts/DependencyBasedBoot">dependency
+based boot sequencing</a> is available from the Debian wiki. It is
+currently possible to disable parallel booting when one run into
+problems caused by it, by adding this line to /etc/default/rcS:</p>
+
+<blockquote><pre>
+CONCURRENCY=none
+</pre></blockquote>
+
+<p>If you report any problems with dependencies in init.d scripts to
+the BTS, please usertag the report to get it to show up at
+<a href="http://bugs.debian.org/cgi-bin/pkgreport.cgi?users=initscripts-ng-devel@lists.alioth.debian.org">the
+list of usertagged bugs related to this</a>.</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>.
+
+ </div>
+</div>
+<div class="padding"></div>
+
+<div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Pieces_of_the_roaming_laptop_puzzle_in_Debian.html">Pieces of the roaming laptop puzzle in Debian</a>
+ </div>
+ <div class="date">
+ 2010-05-19 19:00
+ </div>
+
+ <div class="body">
+
+<p>Today, the last piece of the puzzle for roaming laptops in Debian
+Edu finally entered the Debian archive. Today, the new
+<a href="http://packages.qa.debian.org/libp/libpam-mklocaluser.html">libpam-mklocaluser</a>
+package was accepted. Two days ago, two other pieces was accepted
+into unstable. The
+<a href="http://packages.qa.debian.org/p/pam-python.html">pam-python</a>
+package needed by libpam-mklocaluser, and the
+<a href="http://packages.qa.debian.org/s/sssd.html">sssd</a> package
+passed NEW on Monday. In addition, the
+<a href="http://packages.qa.debian.org/libp/libpam-ccreds.html">libpam-ccreds</a>
+package we need is in experimental (version 10-4) since Saturday, and
+hopefully will be moved to unstable soon.</p>
+
+<p>This collection of packages allow for two different setups for
+roaming laptops. The traditional setup would be using libpam-ccreds,
+nscd and libpam-mklocaluser with LDAP or Kerberos authentication,
+which should work out of the box if the configuration changes proposed
+for nscd in <a href="http://bugs.debian.org/485282">BTS report
+#485282</a> is implemented. The alternative setup is to use sssd with
+libpam-mklocaluser to connect to LDAP or Kerberos and let sssd take
+care of the caching of passwords and group information.</p>
+
+<p>I have so far been unable to get sssd to work with the LDAP server
+at the University, but suspect the issue is some SSL/GnuTLS related
+problem with the server certificate. I plan to update the Debian
+package to version 1.2, which is scheduled for next week, and hope to
+find time to make sure the next release will include both the
+Debian/Ubuntu specific patches. Upstream is friendly and responsive,
+and I am sure we will find a good solution.</p>
+
+<p>The idea is to set up the roaming laptops to authenticate using
+LDAP or Kerberos and create a local user with home directory in /home/
+when a usre in LDAP logs in via KDM or GDM for the first time, and
+cache the password for offline checking, as well as caching group
+memberhips and other relevant LDAP information. The
+libpam-mklocaluser package was created to make sure the local home
+directory is in /home/, instead of /site/server/directory/ which would
+be the home directory if pam_mkhomedir was used. To avoid confusion
+with support requests and configuration, we do not want local laptops
+to have users in a path that is used for the same users home directory
+on the home directory servers.</p>
+
+<p>One annoying problem with gdm is that it do not show the PAM
+message passed to the user from libpam-mklocaluser when the local user
+is created. Instead gdm simply reject the login with some generic
+message. The message is shown in kdm, ssh and login, so I guess it is
+a bug in gdm. Have not investigated if there is some other message
+type that can be used instead to get gdm to also show the message.</p>
+
+<p>If you want to help out with implementing this for Debian Edu,
+please contact us on debian-edu@lists.debian.org.</p>
+
+ </div>
+ <div class="tags">
+
+
+
+ Tags: <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/More_flexible_firmware_handling_in_debian_installer.html">More flexible firmware handling in debian-installer</a>
+ </div>
+ <div class="date">
+ 2010-05-22 21:30
+ </div>
+
+ <div class="body">
+
+<p>After a long break from debian-installer development, I finally
+found time today to return to the project. Having to spend less time
+working dependency based boot in debian, as it is almost complete now,
+definitely helped freeing some time.</p>
+
+<p>A while back, I ran into a problem while working on Debian Edu. We
+include some firmware packages on the Debian Edu CDs, those needed to
+get disk and network controllers working. Without having these
+firmware packages available during installation, it is impossible to
+install Debian Edu on the given machine, and because our target group
+are non-technical people, asking them to provide firmware packages on
+an external medium is a support pain. Initially, I expected it to be
+enough to include the firmware packages on the CD to get
+debian-installer to find and use them. This proved to be wrong.
+Next, I hoped it was enough to symlink the relevant firmware packages
+to some useful location on the CD (tried /cdrom/ and
+/cdrom/firmware/). This also proved to not work, and at this point I
+found time to look at the debian-installer code to figure out what was
+going to work.</p>
+
+<p>The firmware loading code is in the hw-detect package, and a closer
+look revealed that it would only look for firmware packages outside
+the installation media, so the CD was never checked for firmware
+packages. It would only check USB sticks, floppies and other
+"external" media devices. Today I changed it to also look in the
+/cdrom/firmware/ directory on the mounted CD or DVD, which should
+solve the problem I ran into with Debian edu. I also changed it to
+look in /firmware/, to make sure the installer also find firmware
+provided in the initrd when booting the installer via PXE, to allow us
+to provide the same feature in the PXE setup included in Debian
+Edu.</p>
+
+<p>To make sure firmware deb packages with a license questions are not
+activated without asking if the license is accepted, I extended
+hw-detect to look for preinst scripts in the firmware packages, and
+run these before activating the firmware during installation. The
+license question is asked using debconf in the preinst, so this should
+solve the issue for the firmware packages I have looked at so far.</p>
+
+<p>If you want to discuss the details of these features, please
+contact us on debian-boot@lists.debian.org.</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>.
+
+ </div>
+</div>
+<div class="padding"></div>
+
+<div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/Parallellized_boot_seem_to_hold_up_well_in_Debian_testing.html">Parallellized boot seem to hold up well in Debian/testing</a>
+ </div>
+ <div class="date">
+ 2010-05-27 23:55
+ </div>
+
+ <div class="body">
+
+<p>A few days ago, parallel booting was enabled in Debian/testing.
+The feature seem to hold up pretty well, but three fairly serious
+issues are known and should be solved:
+
+<p><ul>
+
+<li>The wicd package seen to
+<a href="http://bugs.debian.org/508289">break NFS mounting</a> and
+<a href="http://bugs.debian.org/581586">network setup</a> when
+parallel booting is enabled. No idea why, but the wicd maintainer
+seem to be on the case.</li>
+
+<li>The nvidia X driver seem to
+<a href="http://bugs.debian.org/583312">have a race condition</a>
+triggered more easily when parallel booting is in effect. The
+maintainer is on the case.</li>
+
+<li>The sysv-rc package fail to properly enable dependency based boot
+sequencing (the shutdown is broken) when old file-rc users
+<a href="http://bugs.debian.org/575080">try to switch back</a> to
+sysv-rc. One way to solve it would be for file-rc to create
+/etc/init.d/.legacy-bootordering, and another is to try to make
+sysv-rc more robust. Will investigate some more and probably upload a
+workaround in sysv-rc to help those trying to move from file-rc to
+sysv-rc get a working shutdown.</li>
+
+</ul></p>
+
+<p>All in all not many surprising issues, and all of them seem
+solvable before Squeeze is released. In addition to these there are
+some packages with bugs in their dependencies and run level settings,
+which I expect will be fixed in a reasonable time span.</p>
+
+<p>If you report any problems with dependencies in init.d scripts to
+the BTS, please usertag the report to get it to show up at
+<a href="http://bugs.debian.org/cgi-bin/pkgreport.cgi?users=initscripts-ng-devel@lists.alioth.debian.org">the
+list of usertagged bugs related to this</a>.</p>
+
+<p>Update: Correct bug number to file-rc issue.</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>.
+
+ </div>
+</div>
+<div class="padding"></div>
+
+<div class="entry">
+ <div class="title">
+ <a href="http://people.skolelinux.org/pere/blog/KDM_fail_at_boot_with_NVidia_cards___and_no_one_try_to_fix_it_.html">KDM fail at boot with NVidia cards - and no one try to fix it?</a>
+ </div>
+ <div class="date">
+ 2010-06-01 17:05
+ </div>
+
+ <div class="body">
+
+<p>It is strange to watch how a bug in Debian causing KDM to fail to
+start at boot when an NVidia video card is used. The problem seem to
+be that the nvidia X.org driver uses a long time to initialize, and
+this duration is longer than kdm is configured to wait.</p>
+
+<p>I came across two bugs related to this issue,
+<a href="http://bugs.debian.org/583312">#583312</a> initially filed
+against initscripts and passed on to nvidia-glx when it became obvious
+that the nvidia drivers were involved, and
+<a href="http://bugs.debian.org/524751">#524751</a> initially filed against
+kdm and passed on to src:nvidia-graphics-drivers for unknown reasons.</p>
+
+<p>To me, it seem that no-one is interested in actually solving the
+problem nvidia video card owners experience and make sure the Debian
+distribution work out of the box for these users. The nvidia driver
+maintainers expect kdm to be set up to wait longer, while kdm expect
+the nvidia driver maintainers to fix the driver start faster, and
+while they wait for each other I guess the users end up switching to a
+distribution that work for them. I have no idea what the solution is,
+but I am pretty sure that waiting for each other is not it.</p>
+
+<p>I wonder why we end up handling bugs this way.</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>.
+
+ </div>
+</div>
+<div class="padding"></div>
+
+ <p style="text-align: right;"><a href="english.rss"><img src="http://people.skolelinux.org/pere/blog/xml.gif" alt="RSS Feed" width="36" height="14"></a></p>
<li>2010
<ul>
-<li><a href="../../archive/2010/01/">January (2)</a></li>
+<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="../../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="../../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="../../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 (1)</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="../../archive/2009/02/">February (8)</a></li>
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2009/02/">February (8)</a></li>
-<li><a href="../../archive/2009/03/">March (12)</a></li>
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2009/03/">March (12)</a></li>
-<li><a href="../../archive/2009/04/">April (10)</a></li>
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2009/04/">April (10)</a></li>
-<li><a href="../../archive/2009/05/">May (9)</a></li>
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2009/05/">May (9)</a></li>
-<li><a href="../../archive/2009/06/">June (3)</a></li>
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2009/06/">June (3)</a></li>
-<li><a href="../../archive/2009/07/">July (4)</a></li>
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
-<li><a href="../../archive/2009/08/">August (3)</a></li>
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</a></li>
-<li><a href="../../archive/2009/09/">September (1)</a></li>
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2009/09/">September (1)</a></li>
-<li><a href="../../archive/2009/10/">October (2)</a></li>
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2009/10/">October (2)</a></li>
-<li><a href="../../archive/2009/11/">November (3)</a></li>
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2009/11/">November (3)</a></li>
-<li><a href="../../archive/2009/12/">December (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 (11)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/3d-printer">3d-printer (11)</a></li>
+
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