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<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="Regjerningen_forlater_prinsippet_om_ingen_royalty_betaling_i_standardkatalogen_versjon_2.html">Regjerningen forlater prinsippet om ingen royalty-betaling i standardkatalogen versjon 2</a></div>
- <div class="date">2009-07-06 21:00</div>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Rob_Weir__How_to_Crush_Dissent.html">Rob Weir: How to Crush Dissent</a></div>
+ <div class="date">2010-08-15 22:20</div>
<div class="body">
-<p>Jeg ble glad da regjeringen
-<a href="http://www.digi.no/817635/her-er-statens-nye-it-standarder">annonserte</a>
-versjon 2 av
-<a href="http://www.regjeringen.no/upload/FAD/Vedlegg/IKT-politikk/Referansekatalogen_versjon2.pdf">statens
-referansekatalog over standarder</a>, men trist da jeg leste hva som
-faktisk var vedtatt etter
-<a href="http://www.regjeringen.no/nb/dep/fad/dok/horinger/horingsdokumenter/2009/horing---referansekatalog-versjon-2.html">høringen</a>.
-De fleste av de valgte åpne standardene er gode og vil bidra til at
-alle kan delta på like vilkår i å lage løsninger for staten, men
-noen av dem blokkerer for de som ikke har anledning til å benytte
-spesifikasjoner som krever betaling for bruk (såkalt
-royalty-betaling). Det gjelder spesifikt for H.264 for video og MP3
-for lyd. Så lenge bruk av disse var valgfritt mens Ogg Theora og Ogg
-Vorbis var påkrevd, kunne alle som ønsket å spille av video og lyd
-fra statens websider gjøre dette uten å måtte bruke programmer der
-betaling for bruk var nødvendig. Når det nå er gjort valgfritt for
-de statlige etatene å bruke enten H.264 eller Theora (og MP3 eler
-Vorbis), så vil en bli tvunget til å forholde seg til
-royalty-belastede standarder for å få tilgang til videoen og
-lyden.</p>
-
-<p>Det gjør meg veldig trist at regjeringen har forlatt prinsippet om
-at alle standarder som ble valgt til å være påkrevd i katalogen skulle
-være uten royalty-betaling. Jeg håper det ikke betyr at en har mistet
-all forståelse for hvilke prinsipper som må følges for å oppnå
-likeverdig konkurranse mellom aktørene i IT-bransjen. NUUG advarte
-mot dette i
-<a href="http://wiki.nuug.no/uttalelser/200901-standardkatalog-v2">sin
-høringsuttalelse</a>, men ser ut til å ha blitt ignorert.</p>
+<p>I found the notes from Rob Weir on
+<a href="http://feedproxy.google.com/~r/robweir/antic-atom/~3/VGb23-kta8c/how-to-crush-dissent.html">how
+to crush dissent</a> matching my own thoughts on the matter quite
+well. Highly recommended for those wondering which road our society
+should go down. In my view we have been heading the wrong way for a
+long time.</p>
</div>
<div class="tags">
- Tags: <a href="tags/multimedia">multimedia</a>, <a href="tags/norsk">norsk</a>, <a href="tags/nuug">nuug</a>, <a href="tags/standard">standard</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/lenker">lenker</a>, <a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug</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>.
</div>
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="Microsofts_misvisende_argumentasjon_rundt_multimediaformater.html">Microsofts misvisende argumentasjon rundt multimediaformater</a></div>
- <div class="date">2009-06-26-13:30</div>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/No_hardcoded_config_on_Debian_Edu_clients.html">No hardcoded config on Debian Edu clients</a></div>
+ <div class="date">2010-08-09 20:15</div>
<div class="body">
-<p>I
-<a href="http://www.regjeringen.no/upload/FAD/Vedlegg/Hoeringer/Refkat_V2/MicrosoftNorge.pdf">Microsoft
-sin høringsuttalelse</a> til
-<a href="http://www.regjeringen.no/nb/dep/fad/dok/horinger/horingsdokumenter/2009/horing---referansekatalog-versjon-2.html?id=549422">forslag
-til versjon 2 av statens referansekatalog over standarder</a>, lirer
-de av seg følgende FUD-perle:</p>
-
-<p><blockquote>"Vorbis, OGG, Theora og FLAC er alle tekniske
- spesifikasjoner overordnet styrt av xiph.org, som er en
- ikke-kommersiell organisasjon. Etablerte og anerkjente
- standardiseringsorganisasjoner, som Oasis, W3C og Ecma, har en godt
- innarbeidet vedlikeholds- og forvaltningsprosess av en standard.
- Det er derimot helt opp til hver enkelt organisasjon å bestemme
- hvordan tekniske spesifikasjoner videreutvikles og endres, og disse
- spesifikasjonene bør derfor ikke defineres som åpne
- standarder."</blockquote></p>
-
-<p>De vokter seg vel for å nevne den anerkjente
-standardiseringsorganisasjonen IETF, som er organisasjonen bak HTTP,
-IP og det meste av protokoller på Internet, og RFC-standardene som
-IETF står bak. Ogg er spesifisert i
-<a href="http://ietf.org/rfc/rfc3533.txt">RFC 3533</a>, og er uten
-tvil å anse som en åpen standard. Vorbis er
-<a href="http://ietf.org/rfc/rfc5215.txt">RFC 5215</a>. Theora er
-
-under standardisering via IETF, med
-<a href="http://svn.xiph.org/trunk/theora/doc/draft-ietf-avt-rtp-theora-00.txt">siste
-utkast publisert 2006-07-21</a> (riktignok er dermed teksten ikke
-skrevet i stein ennå, men det blir neppe endringer som ikke er
-bakoverkompatibel). De kan være inne på noe når det gjelder FLAC da
-jeg ikke finner tegn til at <a
-href="http://flac.sourceforge.net/format.html">spesifikasjonen
-tilgjengelig på web</a> er på tur via noen
-standardiseringsorganisasjon, men i og med at folkene bak Ogg, Theora
-og Vorbis også har involvert seg i Flac siden 2003, så ser jeg ikke
-bort fra at også den organiseres via IETF. Jeg kjenner personlig lite
-til FLAC.</p>
-
-<p>Uredelig argumentasjon bør en holde seg for god til å komme med,
-spesielt når det er så enkelt i dagens Internet-hverdag å gå
-misvisende påstander etter i sømmene.</p>
+<p>As reported earlier, the last few days I have looked at how Debian
+Edu clients are configured, and tried to get rid of all hardcoded
+configuration settings on the clients. I believe the work to be
+mostly done, and the clients seem to work just fine with dynamically
+generated configuration.</p>
+
+<p>What is the point, you might ask? The point is to allow a Debian
+Edu desktop to integrate into an existing network infrastructure
+without any manual configuration.</p>
+
+<p>This is what happens when installing a Debian Edu client here at
+the University of Oslo using PXE. With the PXE installation, I am
+asked for language (Norwegian Bokmål), locality (Norway) and keyboard
+layout (no-latin1), Debian Edu profile (Roaming Workstation), if I
+accept to reformat the hard drive (yes), if I want to submit info to
+popcon.debian.org (no) and root password (secret). After answering
+these questions, the installer goes ahead and does its thing, and
+after around 50 minutes it is done. I press enter to finish the
+installation, and the machine reboots into KDE. When the machine is
+ready and kdm asks for login information, I enter my university
+username and password, am told by kdm that a local home directory has
+been created and that I must log in again, and finally log in with the
+same username and password to the KDE 4.4 desktop. At no point during
+this process did it ask for university specific settings, and all the
+required configuration was dynamically detected using information
+fetched via DHCP and DNS. The roaming workstation is now ready for
+use.</p>
+
+<p>How was this done, you might wonder? First of all, here is the
+list of things that need to be configured on the client to get it
+working properly out of the box:</p>
+
+<ul>
+<li>IP address/netmask and DNS server.</li>
+<li>Web proxy URL.</li>
+<li>LDAP server for NSS directory information (user, group, etc).</li>
+<li>Kerberos server for PAM password checking.</li>
+<li>SMB mount point to access the network home directory. (*)</li>
+<li>Central syslog server to send syslog messages to. (*)</li>
+<li>Sitesummary collector URL to submit info to central server. (*)</li>
+</ul>
+
+<p>(Hm, did I forget anything? Let me knew if I did.)</p>
+
+<p>The points marked (*) are not required to be able to use the
+machine, but needed to provide central storage and allowing system
+administrators to track their machines. Since yesterday, everything
+but the sitesummary collector URL is dynamically discovered at boot
+and installation time in the svn version of Debian Edu.</p>
+
+<p>The IP and DNS setup is fetched during boot using DHCP as usual.
+When a DHCP update arrives, the proxy setup is updated by looking for
+http://wpat/wpad.dat and using the content of this WPAD file to
+configure the http and ftp proxy in /etc/environment and
+/etc/apt/apt.conf. I decided to update the proxy setup using a DHCP
+hook to ensure that the client stops using the Debian Edu proxy when
+it is moved outside the Debian Edu network, and instead uses any local
+proxy present on the new network when it moves around.</p>
+
+<p>The DNS names of the LDAP, Kerberos and syslog server and related
+configuration are generated using DNS information at boot. First the
+installer looks for a host named ldap in the current DNS domain. If
+not found, it looks for _ldap._tcp SRV records in DNS instead. If an
+LDAP server is found, its root DSE entry is requested and the
+attributes namingContexts and defaultNamingContext are used to
+determine which LDAP base to use for NSS. If there are several
+namingContexts attibutes and the defaultNamingContext is present, that
+LDAP subtree is used as the base. If defaultNamingContext is missing,
+the subtrees listed as namingContexts are searched in sequence for any
+object with class posixAccount or posixGroup, and the first one with
+such an object is used as the LDAP base. For Kerberos, a similar
+search is done by first looking for a host named kerberos, and then
+for the _kerberos._tcp SRV record. I've been unable to find a way to
+look up the Kerberos realm, so for this the upper case string of the
+current DNS domain is used.</p>
+
+<p>For the syslog server, the hosts syslog and loghost are searched
+for, and the _syslog._udp SRV record is consulted if no such host is
+found. This algorithm works for both Debian Edu and the University of
+Oslo. A similar strategy would work for locating the sitesummary
+server, but have not been implemented yet. I decided to fetch and
+save these settings during installation, to make sure moving to a
+different network does not change the set of users being allowed to
+log in nor the passwords required to log in. Usernames and passwords
+will be cached by sssd when the user logs in on the Debian Edu
+network, and will not change as the laptop move around. For a
+non-roaming machine, there is no caching, but given that it is
+supposed to stay in place it should not matter much. Perhaps we
+should switch those to use sssd too?</p>
+
+<p>The user's SMB mount point for the network home directory is
+located when the user logs in for the first time. The LDAP server is
+consulted to look for the user's LDAP object and the sambaHomePath
+attribute is used if found. If it isn't found, the home directory
+path fetched from NSS is used instead. Assuming the path is of the
+form /site/server/directory/username, the second part is looked up in
+DNS and used to generate a SMB URL of the form
+smb://server.domain/username. This algorithm works for both Debian
+edu and the University of Oslo. Perhaps there are better attributes
+to use or a better algorithm that works for more sites, but this will
+do for now. :)</p>
+
+<p>This work should make it easier to integrate the Debian Edu clients
+into any LDAP/Kerberos infrastructure, and make the current setup even
+more flexible than before. I suspect it will also work for thin
+client servers, allowing one to easily set up LTSP and hook it into a
+existing network infrastructure, but I have not had time to test this
+yet.</p>
+
+<p>If you want to help out with implementing these things for Debian
+Edu, please contact us on debian-edu@lists.debian.org.</p>
+
+<p>Update 2010-08-09: Simon Farnsworth gave me a heads-up on how to
+detect Kerberos realm from DNS, by looking for _kerberos TXT entries
+before falling back to the upper case DNS domain name. Will have to
+implement it for Debian Edu. :)</p>
</div>
<div class="tags">
- Tags: <a href="tags/multimedia">multimedia</a>, <a href="tags/norsk">norsk</a>, <a href="tags/standard">standard</a>, <a href="tags/video">video</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>
<div class="entry">
- <div class="title"><a href="Debian_boots_quicker_and_quicker.html">Debian boots quicker and quicker</a></div>
- <div class="date">2009-06-24 21:40</div>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Testing_if_a_file_system_can_be_used_for_home_directories___.html">Testing if a file system can be used for home directories...</a></div>
+ <div class="date">2010-08-08 21:20</div>
<div class="body">
-<p>I spent Monday and tuesday this week in London with a lot of the
-people involved in the boot system on Debian and Ubuntu, to see if we
-could find more ways to speed up the boot system. This was an Ubuntu
-funded
-<a href="https://wiki.ubuntu.com/FoundationsTeam/BootPerformance/DebianUbuntuSprint">developer
-gathering</a>. It was quite productive. We also discussed the future
-of boot systems, and ways to handle the increasing number of boot
-issues introduced by the Linux kernel becoming more and more
-asynchronous and event base. The Ubuntu approach using udev and
-upstart might be a good way forward. Time will show.</p>
-
-<p>Anyway, there are a few ways at the moment to speed up the boot
-process in Debian. All of these should be applied to get a quick
-boot:</p>
-
-<ul>
-
-<li>Use dash as /bin/sh.</li>
-
-<li>Disable the init.d/hwclock*.sh scripts and make sure the hardware
- clock is in UTC.</li>
-
-<li>Install and activate the insserv package to enable
- <a href="http://wiki.debian.org/LSBInitScripts/DependencyBasedBoot">dependency
- based boot sequencing</a>, and enable concurrent booting.</li>
-
-</ul>
-
-These points are based on the Google summer of code work done by
-<a href="http://initscripts-ng.alioth.debian.org/soc2006-bootsystem/">Carlos
-Villegas</a>.
-
-<p>Support for makefile-style concurrency during boot was uploaded to
-unstable yesterday. When we tested it, we were able to cut 6 seconds
-from the boot sequence. It depend on very correct dependency
-declaration in all init.d scripts, so I expect us to find edge cases
-where the dependences in some scripts are slightly wrong when we start
-using this.</p>
-
-<p>On our IRC channel for this effort, #pkg-sysvinit, a new idea was
-introduced by Raphael Geissert today, one that could affect the
-startup speed as well. Instead of starting some scripts concurrently
-from rcS.d/ and another set of scripts from rc2.d/, it would be
-possible to run a of them in the same process. A quick way to test
-this would be to enable insserv and run 'mv /etc/rc2.d/S* /etc/rcS.d/;
-insserv'. Will need to test if that work. :)</p>
+<p>A few years ago, I was involved in a project planning to use
+Windows file servers as home directory servers for Debian
+Edu/Skolelinux machines. This was thought to be no problem, as the
+access would be through the SMB network file system protocol, and we
+knew other sites used SMB with unix and samba as the file server to
+mount home directories without any problems. But, after months of
+struggling, we had to conclude that our goal was impossible.</p>
+
+<p>The reason is simply that while SMB can be used for home
+directories when the file server is Samba running on Unix, this only
+work because of Samba have some extensions and the fact that the
+underlying file system is a unix file system. When using a Windows
+file server, the underlying file system do not have POSIX semantics,
+and several programs will fail if the users home directory where they
+want to store their configuration lack POSIX semantics.</p>
+
+<p>As part of this work, I wrote a small C program I want to share
+with you all, to replicate a few of the problematic applications (like
+OpenOffice.org and GCompris) and see if the file system was working as
+it should. If you find yourself in spooky file system land, it might
+help you find your way out again. This is the fs-test.c source:</p>
+
+<pre>
+/*
+ * Some tests to check the file system sematics. Used to verify that
+ * CIFS from a windows server do not work properly as a linux home
+ * directory.
+ * License: GPL v2 or later
+ *
+ * needs libsqlite3-dev and build-essential installed
+ * compile with: gcc -Wall -lsqlite3 -DTEST_SQLITE fs-test.c -o fs-test
+*/
+
+#define _FILE_OFFSET_BITS 64
+#define _LARGEFILE_SOURCE 1
+#define _LARGEFILE64_SOURCE 1
+
+#define _GNU_SOURCE /* for asprintf() */
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <sys/file.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#ifdef TEST_SQLITE
+/*
+ * Test sqlite open, as done by gcompris require the libsqlite3-dev
+ * package and linking with -lsqlite3. A more low level test is
+ * below.
+ * See also <URL: http://www.sqlite.org./faq.html#q5 >.
+ */
+#include <sqlite3.h>
+#define CREATE_TABLE_USERS \
+ "CREATE TABLE users (user_id INT UNIQUE, login TEXT, lastname TEXT, firstname TEXT, birthdate TEXT, class_id INT ); "
+int test_sqlite_open(void) {
+ char *zErrMsg;
+ char *name = "testsqlite.db";
+ sqlite3 *db=NULL;
+ unlink(name);
+ int rc = sqlite3_open(name, &db);
+ if( rc ){
+ printf("error: sqlite open of %s failed: %s\n", name, sqlite3_errmsg(db));
+ sqlite3_close(db);
+ return -1;
+ }
+
+ /* create tables */
+ rc = sqlite3_exec(db,CREATE_TABLE_USERS, NULL, 0, &zErrMsg);
+ if( rc != SQLITE_OK ){
+ printf("error: sqlite table create failed: %s\n", zErrMsg);
+ sqlite3_close(db);
+ return -1;
+ }
+ printf("info: sqlite worked\n");
+ sqlite3_close(db);
+ return 0;
+}
+#endif /* TEST_SQLITE */
+
+/*
+ * Demonstrate locking issue found in gcompris using sqlite3. This
+ * work with ext3, but not with cifs server on Windows 2003. This is
+ * done in the sqlite3 library.
+ * See also
+ * <URL:http://www.cygwin.com/ml/cygwin/2001-08/msg00854.html> and the
+ * POSIX specification
+ * <URL:http://www.opengroup.org/onlinepubs/009695399/functions/fcntl.html>.
+ */
+int test_gcompris_locking(void) {
+ struct flock fl;
+ char *name = "testsqlite.db";
+ unlink(name);
+ int fd = open(name, O_RDWR|O_CREAT|O_LARGEFILE, 0644);
+ printf("info: testing fcntl locking\n");
+
+ fl.l_whence = SEEK_SET;
+ fl.l_pid = getpid();
+ printf(" Read-locking 1 byte from 1073741824");
+ fl.l_start = 1073741824;
+ fl.l_len = 1;
+ fl.l_type = F_RDLCK;
+ if (0 != fcntl(fd, F_SETLK, &fl) ) printf(" - error!\n"); else printf("\n");
+
+ printf(" Read-locking 510 byte from 1073741826");
+ fl.l_start = 1073741826;
+ fl.l_len = 510;
+ fl.l_type = F_RDLCK;
+ if (0 != fcntl(fd, F_SETLK, &fl) ) printf(" - error!\n"); else printf("\n");
+
+ printf(" Unlocking 1 byte from 1073741824");
+ fl.l_start = 1073741824;
+ fl.l_len = 1;
+ fl.l_type = F_UNLCK;
+ if (0 != fcntl(fd, F_SETLK, &fl) ) printf(" - error!\n"); else printf("\n");
+
+ printf(" Write-locking 1 byte from 1073741824");
+ fl.l_start = 1073741824;
+ fl.l_len = 1;
+ fl.l_type = F_WRLCK;
+ if (0 != fcntl(fd, F_SETLK, &fl) ) printf(" - error!\n"); else printf("\n");
+
+ printf(" Write-locking 510 byte from 1073741826");
+ fl.l_start = 1073741826;
+ fl.l_len = 510;
+ if (0 != fcntl(fd, F_SETLK, &fl) ) printf(" - error!\n"); else printf("\n");
+
+ printf(" Unlocking 2 byte from 1073741824");
+ fl.l_start = 1073741824;
+ fl.l_len = 2;
+ fl.l_type = F_UNLCK;
+ if (0 != fcntl(fd, F_SETLK, &fl) ) printf(" - error!\n"); else printf("\n");
+
+ close(fd);
+ return 0;
+}
+
+/*
+ * Test if permissions of freshly created directories allow entries
+ * below them. This was a problem with OpenOffice.org and gcompris.
+ * Mounting with option 'sync' seem to solve this problem while
+ * slowing down file operations.
+ */
+int test_subdirectory_creation(void) {
+#define LEVELS 5
+ char *path = strdup("test");
+ char *dirs[LEVELS];
+ int level;
+ printf("info: testing subdirectory creation\n");
+ for (level = 0; level < LEVELS; level++) {
+ char *newpath = NULL;
+ if (-1 == mkdir(path, 0777)) {
+ printf(" error: Unable to create directory '%s': %s\n",
+ path, strerror(errno));
+ break;
+ }
+ asprintf(&newpath, "%s/%s", path, "test");
+ free(path);
+ path = newpath;
+ }
+ return 0;
+}
+
+/*
+ * Test if symlinks can be created. This was a problem detected with
+ * KDE.
+ */
+int test_symlinks(void) {
+ printf("info: testing symlink creation\n");
+ unlink("symlink");
+ if (-1 == symlink("file", "symlink"))
+ printf(" error: Unable to create symlink\n");
+ return 0;
+}
+
+int main(int argc, char **argv) {
+ printf("Testing POSIX/Unix sematics on file system\n");
+ test_symlinks();
+ test_subdirectory_creation();
+#ifdef TEST_SQLITE
+ test_sqlite_open();
+#endif /* TEST_SQLITE */
+ test_gcompris_locking();
+ return 0;
+}
+</pre>
+
+<p>When everything is working, it should print something like
+this:</p>
+
+<pre>
+Testing POSIX/Unix sematics on file system
+info: testing symlink creation
+info: testing subdirectory creation
+info: sqlite worked
+info: testing fcntl locking
+ Read-locking 1 byte from 1073741824
+ Read-locking 510 byte from 1073741826
+ Unlocking 1 byte from 1073741824
+ Write-locking 1 byte from 1073741824
+ Write-locking 510 byte from 1073741826
+ Unlocking 2 byte from 1073741824
+</pre>
+
+<p>I do not remember the exact details of the problems we saw, but one
+of them was with locking, where if I remember correctly, POSIX allow a
+read-only lock to be upgraded to a read-write lock without unlocking
+the read-only lock (while Windows do not). Another was a bug in the
+CIFS/SMB client implementation in the Linux kernel where directory
+meta information would be wrong for a fraction of a second, making
+OpenOffice.org fail to create its deep directory tree because it was
+not allowed to create files in its freshly created directory.</p>
+
+<p>Anyway, here is a nice tool for your tool box, might you never need
+it. :)</p>
</div>
<div class="tags">
- Tags: <a href="tags/debian">debian</a>, <a href="tags/english">english</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>
<div class="entry">
- <div class="title"><a href="Litt_om_valgfusk_og_problemet_med_elektronisk_stemmegiving.html">Litt om valgfusk og problemet med elektronisk stemmegiving</a></div>
- <div class="date">2009-06-17 14:20</div>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Autodetecting_Client_setup_for_roaming_workstations_in_Debian_Edu.html">Autodetecting Client setup for roaming workstations in Debian Edu</a></div>
+ <div class="date">2010-08-07 14:45</div>
<div class="body">
-<p><a href="http://www.aftenposten.no/nyheter/uriks/article3127058.ece">Aftenposten
-melder</a> at det kan se ut til at Iran ikke har lært av USA når det
-gjelder valgfusk. En bør endre tallene før de publiseres, slik at en
-kandidat aldri får færre stemmer under opptellingen, ellers blir det
-veldig tydelig at tallene ikke er til å stole på. I USA er det
-derimot <a href="http://www.blackboxvoting.org/">rapporter om at
-tallene har vært endret</a> på tur mot opptellingen, ikke etter at
-tallene er publiserte (i tillegg til en rekke andre irregulariteter).
-En ting Iran åpenbart har forstått, er verdien av å kunne
-kontrolltelle stemmer. Det ligger an til kontrolltelling i hvert fall
-i noen områder. Hvorvidt det har verdi, kommer an på hvordan
-stemmene har vært oppbevart.</p>
-
-<p><a href="http://universitas.no/kronikk/48334/kan-vi-stole-pa-universitetets-elektroniske-valgsystem-/">Universitetet
-i Oslo derimot</a>, har ikke forstått verdien av å kunne
-kontrolltelle. Her har en valgt å ta i bruk elektronisk stemmegiving
-over Internet, med et system som ikke kan kontrolltelles hvis det
-kommer anklager om juks med stemmene. Systemet har flere kjente
-problemer og er i mine øyne ikke bedre enn en spørreundersøkelse, og
-jeg har derfor latt være å stemme ved valg på UiO siden det ble
-innført.</p>
-
-<p>Universitet i Bergen derimot har klart det kunststykket å aktivt gå
-inn for å gjøre det kjent at det elektroniske stemmegivingssystemet
-over Internet <a href="http://nyheter.uib.no/?modus=vis_nyhet&id=43404">kan
-spore hvem som stemmer hva</a> (det kan en forøvrig også ved UiO), og tatt
-kontakt med stemmegivere for å spørre hvorfor de stemte som de gjorde.
-Hemmelige valg står for fall. Mon tro hva stemmesedlenne hadde
-inneholdt i Iran hvis de ikke hadde hemmelige valg?</p>
+<p>A few days ago, I
+<a href="http://people.skolelinux.org/pere/blog/Debian_Edu_roaming_workstation___at_the_university_of_Oslo.html">tried
+to install</a> a Roaming workation profile from Debian Edu/Squeeze
+while on the university network here at the University of Oslo, and
+noticed how much had to change to get it operational using the
+university infrastructure. It was fairly easy, but it occured to me
+that Debian Edu would improve a lot if I could get the client to
+connect without any changes at all, and thus let the client configure
+itself during installation and first boot to use the infrastructure
+around it. Now I am a huge step further along that road.</p>
+
+<p>With our current squeeze-test packages, I can select the roaming
+workstation profile and get a working laptop connecting to the
+university LDAP server for user and group and our active directory
+servers for Kerberos authentication. All this without any
+configuration at all during installation. My users home directory got
+a bookmark in the KDE menu to mount it via SMB, with the correct URL.
+In short, openldap and sssd is correctly configured. In addition to
+this, the client look for http://wpad/wpad.dat to configure a web
+proxy, and when it fail to find it no proxy settings are stored in
+/etc/environment and /etc/apt/apt.conf. Iceweasel and KDE is
+configured to look for the same wpad configuration and also do not use
+a proxy when at the university network. If the machine is moved to a
+network with such wpad setup, it would automatically use it when DHCP
+gave it a IP address.</p>
+
+<p>The LDAP server is located using DNS, by first looking for the DNS
+entry ldap.$domain. If this do not exist, it look for the
+_ldap._tcp.$domain SRV records and use the first one as the LDAP
+server. Next, it connects to the LDAP server and search all
+namingContexts entries for posixAccount or posixGroup objects, and
+pick the first one as the LDAP base. For Kerberos, a similar
+algorithm is used to locate the LDAP server, and the realm is the
+uppercase version of $domain.</p>
+
+<p>So, what is not working, you might ask. SMB mounting my home
+directory do not work. No idea why, but suspected the incorrect
+Kerberos settings in /etc/krb5.conf and /etc/samba/smb.conf might be
+the cause. These are not properly configured during installation, and
+had to be hand-edited to get the correct Kerberos realm and server,
+but SMB mounting still do not work. :(</p>
+
+<p>With this automatic configuration in place, I expect a Debian Edu
+roaming profile installation would be able to automatically detect and
+connect to any site using LDAP and Kerberos for NSS directory and PAM
+authentication. It should also work out of the box in a Active
+Directory environment providing posixAccount and posixGroup objects
+with UID and GID values.</p>
+
+<p>If you want to help out with implementing these things for Debian
+Edu, please contact us on debian-edu@lists.debian.org.</p>
</div>
<div class="tags">
- Tags: <a href="tags/norsk">norsk</a>, <a href="tags/nuug">nuug</a>, <a href="tags/personvern">personvern</a>, <a href="tags/sikkerhet">sikkerhet</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>
<div class="entry">
- <div class="title"><a href="Standarder_fungerer_best_n__r_en_samler_seg_rundt_dem.html">Standarder fungerer best når en samler seg rundt dem</a></div>
- <div class="date">2009-05-19 11:30</div>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Debian_Edu_roaming_workstation___at_the_university_of_Oslo.html">Debian Edu roaming workstation - at the university of Oslo</a></div>
+ <div class="date">2010-08-03 23:30</div>
<div class="body">
-<p>En standard er noe man samler seg rundt, ut fra ideen om at en får
-fordeler når mange står sammen. Jo flere som står sammen, jo
-bedre. Når en vet dette, blir det litt merkelig å lese noen av
-uttalelsene som er kommet inn til
-<a href="http://www.regjeringen.no/nb/dep/fad/dok/horinger/horingsdokumenter/2009/horing---referansekatalog-versjon-2/horingsuttalelser.html?id=549423">høringen
-om versjon 2 av statens referansekatalog over standarder</a>. Blant
-annet Abelia, NHO og Microsoft tror det er lurt med flere standarder
-innenfor samme område. Det blir som å si at det er fint om Norge
-standardiserte både på A4- og Letter-størrelser på arkene, ulik
-sporvidde på jernbaneskinnene, meter og fot som lengemål, eller
-høyre- og venstrekjøring - slik at en kan konkurrere på hvilken
-standard som er best. De fleste forstår heldigvis at dette ikke
-bidrar positivt.</p>
+<p>The new roaming workstation profile in Debian Edu/Squeeze is fairly
+similar to the laptop setup am I working on using Ubuntu for the
+University of Oslo, and just for the heck of it, I tested today how
+hard it would be to integrate that profile into the university
+infrastructure. In this case, it is the university LDAP server,
+Active Directory Kerberos server and SMB mounting from the Netapp file
+servers.</p>
+
+<p>I was pleasantly surprised that the only three files needed to be
+changed (/etc/sssd/sssd.conf, /etc/ldap.conf and
+/etc/mklocaluser.d/20-debian-edu-config) and one file had to be added
+(/usr/share/perl5/Debian/Edu_Local.pm), to get the client working.
+Most of the changes were to get the client to use the university LDAP
+for NSS and Kerberos server for PAM, but one was to change a hard
+coded DNS domain name in the mklocaluser hook from .intern to
+.uio.no.</p>
+
+<p>This testing was so encouraging, that I went ahead and adjusted the
+Debian Edu scripts and setup in subversion to centralise the roaming
+workstation setup a bit more and avoid the hardcoded DNS domain name,
+so that when I test this tomorrow, I expect to get away with modifying
+only /etc/sssd/sssd.conf and /etc/ldap.conf to get it to use the
+university servers.</p>
+
+<p>My goal is to get the clients to have no hardcoded settings and
+fetch all their initial setup during installation and first boot, to
+allow them to be inserted also into environments where the default
+setup in Debian Edu has been changed or as with the university, where
+the environment is different but provides the protocols Debian Edu
+uses.</p>
</div>
<div class="tags">
- 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/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="BSAs_p__stander_om_piratkopiering_m__ter_motstand.html">BSAs påstander om piratkopiering møter motstand</a></div>
- <div class="date">2009-05-17 23:05</div>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Circular_package_dependencies_harms_apt_recovery.html">Circular package dependencies harms apt recovery</a></div>
+ <div class="date">2010-07-27 23:50</div>
<div class="body">
-<p>Hvert år de siste årene har BSA, lobbyfronten til de store
-programvareselskapene som Microsoft og Apple, publisert en rapport der
-de gjetter på hvor mye piratkopiering påfører i tapte inntekter i
-ulike land rundt om i verden. Resultatene er tendensiøse. For noen
-dager siden kom
-<a href="http://global.bsa.org/globalpiracy2008/studies/globalpiracy2008.pdf">siste
-rapport</a>, og det er flere kritiske kommentarer publisert de siste
-dagene. Et spesielt interessant kommentar fra Sverige,
-<a href="http://www.idg.se/2.1085/1.229795/bsa-hoftade-sverigesiffror">BSA
-höftade Sverigesiffror</a>, oppsummeres slik:</p>
-
-<blockquote>
-I sin senaste rapport slår BSA fast att 25 procent av all mjukvara i
-Sverige är piratkopierad. Det utan att ha pratat med ett enda svenskt
-företag. "Man bör nog kanske inte se de här siffrorna som helt
-exakta", säger BSAs Sverigechef John Hugosson.
-</blockquote>
-
-<p>Mon tro om de er like metodiske når de gjetter på andelen piratkopiering i Norge? To andre kommentarer er <a
-href="http://www.vnunet.com/vnunet/comment/2242134/bsa-piracy-figures-shot-reality">BSA
-piracy figures need a shot of reality</a> og <a
-href="http://www.michaelgeist.ca/content/view/3958/125/">Does The WIPO
-Copyright Treaty Work?</a></p>
-
-<p>Fant lenkene via <a
-href="http://tech.slashdot.org/article.pl?sid=09/05/17/1632242">oppslag
-på Slashdot</a>.</p>
+<p>I discovered this while doing
+<a href="http://people.skolelinux.org/pere/blog/Automatic_upgrade_testing_from_Lenny_to_Squeeze.html">automated
+testing of upgrades from Debian Lenny to Squeeze</a>. A few packages
+in Debian still got circular dependencies, and it is often claimed
+that apt and aptitude should be able to handle this just fine, but
+some times these dependency loops causes apt to fail.</p>
+
+<p>An example is from todays
+<a href="http://people.skolelinux.org/~pere/debian-upgrade-testing//test-20100727-lenny-squeeze-kde-aptitude.txt">upgrade
+of KDE using aptitude</a>. In it, a bug in kdebase-workspace-data
+causes perl-modules to fail to upgrade. The cause is simple. If a
+package fail to unpack, then only part of packages with the circular
+dependency might end up being unpacked when unpacking aborts, and the
+ones already unpacked will fail to configure in the recovery phase
+because its dependencies are unavailable.</p>
+
+<p>In this log, the problem manifest itself with this error:</p>
+
+<blockquote><pre>
+dpkg: dependency problems prevent configuration of perl-modules:
+ perl-modules depends on perl (>= 5.10.1-1); however:
+ Version of perl on system is 5.10.0-19lenny2.
+dpkg: error processing perl-modules (--configure):
+ dependency problems - leaving unconfigured
+</pre></blockquote>
+
+<p>The perl/perl-modules circular dependency is already
+<a href="http://bugs.debian.org/527917">reported as a bug</a>, and will
+hopefully be solved as soon as possible, but it is not the only one,
+and each one of these loops in the dependency tree can cause similar
+failures. Of course, they only occur when there are bugs in other
+packages causing the unpacking to fail, but it is rather nasty when
+the failure of one package causes the problem to become worse because
+of dependency loops.</p>
+
+<p>Thanks to
+<a href="http://lists.debian.org/debian-devel/2010/06/msg00116.html">the
+tireless effort by Bill Allombert</a>, the number of circular
+dependencies
+<a href="http://debian.semistable.com/debgraph.out.html">left in Debian
+is dropping</a>, and perhaps it will reach zero one day. :)</p>
+
+<p>Todays testing also exposed a bug in
+<a href="http://bugs.debian.org/590605">update-notifier</a> and
+<a href="http://bugs.debian.org/590604">different behaviour</a> between
+apt-get and aptitude, the latter possibly caused by some circular
+dependency. Reported both to BTS to try to get someone to look at
+it.</p>
</div>
<div class="tags">
- Tags: <a href="tags/debian">debian</a>, <a href="tags/debian edu">debian edu</a>, <a href="tags/fildeling">fildeling</a>, <a href="tags/norsk">norsk</a>, <a href="tags/nuug">nuug</a>, <a href="tags/opphavsrett">opphavsrett</a>, <a href="tags/personvern">personvern</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="padding"></div>
<div class="entry">
- <div class="title"><a href="Webbasert_tegneseriearkiv_p___trappene.html">Webbasert tegneseriearkiv på trappene</a></div>
- <div class="date">2009-05-16 19:05</div>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/First_Debian_Edu_test_release__alpha0__based_on_Squeeze_is_released.html">First Debian Edu test release (alpha0) based on Squeeze is released</a></div>
+ <div class="date">2010-07-27 17:45</div>
<div class="body">
-<p>For noen dager siden ble jeg tipset om en ny norsk webtjeneste for
-å holde styr på ens tegneseriesamling. Har så smått begynt å
-teste den og lagt inn noen hundre oppføringer, og det ser ut til å
-fungere fint. Utvikleren, Trond Hallstensen, er selv ivrig samler og
-har laget systemet i første omgang for seg selv, men altså gjort det
-mulig også for andre å bidra. Tjenesten har potensiale til å bli
-en komplett og verdifull tegneserieindeks over norske serier. Da jeg
-oppdaget tjenesten var det endel mangler som gjorde meg skeptisk til
-å registrere min samling der. Det var nemlig ingen måte å hente ut
-en maskinlesbar oversikt over det jeg registrerte, slik at mine data
-ville være innelåst i tjenesten. Siden den gang har Trond lagt til
-en eksportfunksjon til CSV-format, slik at i hvert fall noen av
-feltene i databasen kan hentes ut for mine serier. Pr. i dag er det
-serie, seriegruppe, år, nr og tittel_på_forside.</p>
-
-<p>Prinsipielt ønsker jeg å kunne hente ut alle feltene om en
-tegneserie, for å unngå repetisjon av det som skjedde med IMDB og
-CDDB på 90-tallet. Begge begynte som fellesskapsprosjekter der
-brukerne bidro på like vilkår, og ble lukket inne da
-initiativtageren og innehaveren av maskinen der tjenesten kjørte
-hadde fått nok innhold til at de ikke lenger følte at de trengte å
-behandle brukerne som likemenn. Trond har skrevet til meg at flere
-felter vil bli lagt inn i eksporten (blant annet strekkode), men
-uttrykt skepsis til å gjøre all informasjonen tilgjengelig (han
-ønsker slik jeg forsto han å kontrollere tjenesten og ikke gjøre
-det mulig å lage konkurrerende tjeneste). Holdningen gjør meg ennå
-mer skeptisk, men tjenesten fungerer fint, så jeg har bestemt meg for
-å ta den i bruk, men begrense meg til å registrere informasjon som
-er tilgjengelig i eksporten.</p>
-
-<p>Har ennå ikke begynt masseregistrering, da jeg venter på støtte for
-strekkoder i tjenesten. Har strekkodeleser, og vil spare litt tid i
-registreringen når jeg går løs på mine esker. Foreløbig har jeg
-registrert litt tilfeldige serier som ligger rundt om i huset, men for
-å få et komplett arkiv må nok noen tusen tegneserier registreres.</p>
-
-<p>Løsningen er i følge utvikleren laget med et Oracle-spesifikt
-verktøy for å lage webtjenester, og ikke fri programvare.
-Utvikleren tar imot innspill men det hørtes ikke ut som om utvikling
-av systemet var enkelt å dele mellom flere, slik at det må via
-ham.</p>
-
-<p>Høres dette interessant ut, besøk
-<a href="http://www.mineserier.no/">mineserier.no</a> og ta en
-titt.</p>
+<p>I just posted this announcement culminating several months of work
+with the next Debian Edu release. Not nearly done, but one major step
+completed.</p>
+
+<blockquote>
+<p>This is the first test release based on Squeeze. The focus of this
+release is to test the user application selection. To have a look,
+install the standalone profile and let the developers know if the set
+of installed packages i.e. applications should be modified. If some
+user application is missing, or if there are some applications that no
+longer make sense to be included in Debian Edu, please let us know.
+Also, if a useful application is missing the translation for your
+language of choice, please let us know too.</p>
+
+<p>In addition, feedback and help to polish the desktop (menus,
+artwork, starters, etc.) is appreciated. We would like to ship a nice
+and handy KDE4 desktop targeted for schools out of the box.</p>
+
+<p>The other profiles should be installable, but there is a lot more
+work left to be done before they are ready, so do not expect to
+much.</p>
+
+<p>Changes compared to the lenny based version</p>
+
+<ul>
+<li>Everything from Debian Squeeze
+<ul>
+ <li>Desktop environment KDE 4.4 => the new KDE desktop in
+ combination with some new artwork
+ <li>Web browser Iceweasel 3.5
+ <li>OpenOffice.org 3.2
+ <li>Educational toolbox GCompris 9.3
+ <li>Music creator Rosegarden 10.04.2
+ <li>Image editor Gimp 2.6.10
+ <li>Virtual universe Celestia 1.6.0
+ <li>Virtual stargazer Stellarium 0.10.4
+ <li>3D modeler Blender 2.49.2 (new application)
+ <li>Video editor Kdenlive 0.7.7 (new application)
+</ul></li>
+<li>Now using Kerberos for password checking (migration not finished).
+ Enabled for:
+<ul>
+ <li>PAM
+ <li>LDAP
+ <li>IMAP
+ <li>SMTP (sender verification)
+</ul>
+</li>
+<li>New experimental roaming workstation profile for laptops.</li>
+<li>Show welcome page to users when they first log in. The URL is
+ fetched from LDAP.</li>
+<li>New LXDE desktop option, in addition to KDE (default) and Gnome.</li>
+<li>General cleanup (not finished)</li>
+</ul>
+<p>The following features are not working as they should</p>
+
+<ul>
+<li>No web based administration tool for creating users and groups. The
+ scripts ldap-createuser-krb and ldap-add-user-to-group can be used
+ for testing.</li>
+<li>DVD installs are missing debian-installer images for the PXE boot,
+ and do not set up the PXE menu on eth0 because of this. LTSP
+ clients should still boot from eth1 on thin client servers.</li>
+<li>The restructured KDE menu is not implemented.</li>
+<li>The LDAP server setup need to be reviewed for security.</li>
+<li>The LDAP directory structure need to be reworked.</li>
+<li>Different sets of packages are installed when using the DVD and the
+ netinst CD. More packages are installed using the netinst CD.</li>
+<li>The jackd package fail to install. This is believed to be caused by
+ some ongoing transition, and hopefully should be solved soon. The
+ jackd1 package can be installed manually for those that need it.</li>
+<li>Some packages lack translations. See
+ http://wiki.debian.org/DebianEdu/Status/Squeeze for updated status,
+ and help out with translations.</li>
+</ul>
+
+<p>To download this multiarch netinstall release you can use</p>
+
+<ul>
+<li><a href="ftp://ftp.skolelinux.org/skolelinux-cd/squeeze-alpha/debian-edu-6.0.0+edua0-CD.iso">ftp://ftp.skolelinux.org/skolelinux-cd/squeeze-alpha/debian-edu-6.0.0+edua0-CD.iso</a></li>
+<li><a href="http://ftp.skolelinux.org/skolelinux-cd/squeeze-alpha/debian-edu-6.0.0+edua0-CD.iso">http://ftp.skolelinux.org/skolelinux-cd/squeeze-alpha/debian-edu-6.0.0+edua0-CD.iso</a></li>
+<li>rsync -avzP ftp.skolelinux.org::skolelinux-cd/squeeze-alpha/debian-edu-6.0.0+edua0-CD.iso</li>
+</ul>
+<p>To download this multiarch dvd release you can use</p>
+
+<ul>
+<li><a href="ftp://ftp.skolelinux.org/skolelinux-cd/squeeze-alpha/debian-edu-6.0.0+edua0-DVD.iso">ftp://ftp.skolelinux.org/skolelinux-cd/squeeze-alpha/debian-edu-6.0.0+edua0-DVD.iso</a></li>
+<li><a href="http://ftp.skolelinux.org/skolelinux-cd/squeeze-alpha/debian-edu-6.0.0+edua0-DVD.iso">http://ftp.skolelinux.org/skolelinux-cd/squeeze-alpha/debian-edu-6.0.0+edua0-DVD.iso</a></li>
+<li>rsync -avzP ftp.skolelinux.org::skolelinux-cd/squeeze-alpha/debian-edu-6.0.0+edua0-DVD.iso</li>
+</ul>
+
+<p>There is no source DVD available yet. It will be prepared when we
+get closer to the final release.</p>
+
+<p>The MD5SUM of these images are</p>
+
+<ul>
+<li>3dbf45d59f42a53518b6e3c9ec3b5eb6 debian-edu-6.0.0+edua0-CD.iso</li>
+<li>22f2cbfce281d1c6e478be452638675d debian-edu-6.0.0+edua0-DVD.iso</li>
+</ul>
+
+<p>The SHA1SUM of these images are</p>
+<ul>
+<li>c53d1b69b40cf37cd27aefaf33f6f6a3821bedf0 debian-edu-6.0.0+edua0-CD.iso</li>
+<li>2ec29d7db676d59d32197b05c277ffe16348376c debian-edu-6.0.0+edua0-DVD.iso</li>
+</ul>
+<p>How to report bugs:
+http://wiki.debian.org/DebianEdu/HowTo/ReportBugsInBugzilla</p>
+
+<p>Please direct replies to debian-edu@lists.debian.org</p>
+</blockquote>
</div>
<div class="tags">
- Tags: <a href="tags/norsk">norsk</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>
<div class="entry">
- <div class="title"><a href="Massiv_overv__kning_av_kollektivtrafikken_i_Oslo_planlegges.html">Massiv overvåkning av kollektivtrafikken i Oslo planlegges</a></div>
- <div class="date">2009-05-16 09:30</div>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/One_step_closer_to_single_signon_in_Debian_Edu.html">One step closer to single signon in Debian Edu</a></div>
+ <div class="date">2010-07-25 10:00</div>
<div class="body">
-<p><a href="http://www.aftenposten.no/nyheter/oslo/article3078919.ece">Flere</a>
-og
-<a href="http://blogg.karlsbakk.net/2009/02/28/nsb-ruter-og-flexus/">flere</a>
-protesterer på den massive overvåkningen og registrering av
-trafikkmønster i kollektivtrafikken som planlegges i Oslo. Det er
-bra. Jeg mister lysten til å bruke kollektivtransport når jeg ser
-hvordan trafikkselskapet holder på. Jeg forventer og forlanger å
-ikke bli overvåket med mindre jeg mistenkes for å ha gjort noe
-alvorlig galt. Den massive registreringen av hvor og når
-passasjerene reiser med kollektivtrafikk som planegges av Ruter i Oslo
-er et grotesk overgrep mot alle som bruker buss, trikk T-bane og tog i
-Osloområdet.</p>
+<p>The last few months me and the other Debian Edu developers have
+been working hard to get the Debian/Squeeze based version of Debian
+Edu/Skolelinux into shape. This future version will use Kerberos for
+authentication, and services are slowly migrated to single signon,
+getting rid of password questions one at the time.</p>
+
+<p>It will also feature a roaming workstation profile with local home
+directory, for laptops that are only some times on the Skolelinux
+network, and for this profile a shortcut is created in Gnome and KDE
+to gain access to the users home directory on the file server. This
+shortcut uses SMB at the moment, and yesterday I had time to test if
+SMB mounting had started working in KDE after we added the cifs-utils
+package. I was pleasantly surprised how well it worked.</p>
+
+<p>Thanks to the recent changes to our samba configuration to get it
+to use Kerberos for authentication, there were no question about user
+password when mounting the SMB volume. A simple click on the shortcut
+in the KDE menu, and a window with the home directory popped
+up. :)</p>
+
+<p>One step closer to a single signon solution out of the box in
+Debian Edu. We already had PAM, LDAP, IMAP and SMTP in place, and now
+also Samba. Next step is Cups and hopefully also NFS.</p>
+
+<p>We had planned a alpha0 release of Debian Edu for today, but thanks
+to the autobuilder administrators for some architectures being slow to
+sign packages, we are still missing the fixed LTSP package we need for
+the release. It was uploaded three days ago with urgency=high, and if
+it had entered testing yesterday we would have been able to test it in
+time for a alpha0 release today. As the binaries for ia64 and powerpc
+still not uploaded to the Debian archive, we need to delay the alpha
+release another day.</p>
+
+<p>If you want to help out with implementing Kerberos for Debian Edu,
+please contact us on debian-edu@lists.debian.org.</p>
</div>
<div class="tags">
- Tags: <a href="tags/norsk">norsk</a>, <a href="tags/nuug">nuug</a>, <a href="tags/personvern">personvern</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>, <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="3D_printing_brer_om_seg___fabrikkene_best__r.html">3D-printing brer om seg - fabrikkene består</a></div>
- <div class="date">2009-05-10 16:50</div>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Digitale_restriksjonsmekanismer_fikk_meg_til____slutte____kj__pe_musikk.html">Digitale restriksjonsmekanismer fikk meg til å slutte å kjøpe musikk</a></div>
+ <div class="date">2010-07-22 23:50</div>
<div class="body">
-<p>I 2004 fikk jeg med meg en forelesning om 3D-printing under <a
-href="http://wiki.oreillynet.com/eurofoo/index.cgi">euro foo camp</a>
-der jeg lærte mye nytt om 3D-printing. Fikk se et lite sjakktårn
-skrevet ut i plast, med vindeltrapp på innsiden av tårnet, og en hul
-gummiball som også var skrevet ut (med et lite hull for å få ut
-fyllmassen). Ble fortalt at det amerikanske kavaleriet skriver ut
-reservedeler i metall i felt, og at det fantes amerikanske husbyggere
-som eksperimenterer med utskrift av hus. De to siste har jeg ikke
-funnet noen referanser til i ettertid, og har derfor lurt på om det
-stemmer. Teknologisk skulle det ikke være noe i veien for slike
-løsninger, det er kun et spørmål om pris på skrivehoder og
-skrivere. I dag ble jeg tipset om en løsning som
-<a href="http://www.shapeways.com/blog/archives/217-3D-printing-buildings-interview-with-Enrico-Dini-of-D_Shape.html">kan
-skrive ut hus</a>, med sand og bindemiddel i 25 DPI oppløsning. Mon
-tro om det er fremtidens byggemetode.</p>
-
-<p>Jeg er ikke i tvil om at 3D-utskrift vil føre til endringer i
-hvordan produksjon gjøres, og at tilgjengeligheten på en rekke produkter
-som i dag er vanskelig eller umulig å få tak i vil bedre seg. Men de
-som tror at 3D-skrivere vil gjøre fabrikkene overflødige, tror jeg har
-forregnet seg. 3D-skrivere er fantastisk bra til å lage spesielle
-dingser på forespørsel, f.eks. etter å ha lastet ned et 3D-design fra
-tjenester som <a href="http://www.thingiverse.com/">Thingiverse</a>.
-De er derimot ikke spesielt bra til å lage mange eksemplarer av samme
-dings. Lav pris pr. enhet er fabrikkenes fortrinn. Hvis det skal
-lages tusenvis, eller millioner av en dings, så vil fabrikkene
-sannsynligvis fortsette å slå 3D-skriving ned i støvlene
-økonomisk, selv om en tar hensyn til transport og logistikk. Hvis
-det derimot skal lages en håndfull, så vil 3D-skriving fremstå som
-et suverent alternativ. 3D-skriving er i så måte løsning for
-<a href="http://en.wikipedia.org/wiki/The_Long_Tail">den lange
-halen</a>, mens fabrikker nok fortsatt vil være løsningen for
-massemarkedet.</p>
+<p>For mange år siden slutte jeg å kjøpe musikk-CDer. Årsaken var at
+musikkbransjen var godt i gang med å selge platene sine med DRM som
+gjorde at jeg ikke fikk spilt av musikken jeg kjøpte på utstyret jeg
+hadde tilgjengelig, dvs. min datamaskin. Det var umulig å se på en
+plate om den var ødelagt eller ikke, og jeg hadde jo allerede en
+anseelig samling med plater, så jeg bestemme meg for å slutte å gi
+penger til en bransje som åpenbart ikke respekterte meg.</p>
+
+<p>Jeg har mange titalls dager med musikk på CD i dag. Det meste er
+lagt i et stort arkiv som kan spilles av fra husets datamaskiner (har
+ikke rukket rippe alt). Jeg ser dermed ikke behovet for å skaffe mer
+musikk. De fleste av mine favoritter er i hus, og jeg er dermed godt
+fornøyd.</p>
+
+<p>Hvis musikkbransjen ønsker mine penger, så må de demonstrere at de
+setter pris på meg som kunde, og ikke skremme meg bort med DRM og
+antydninger om at kundene er kriminelle.</p>
+
+<p>Filmbransjen er like ille, men mens musikk gjerne varer lenge, er
+filmer mer ferskvare. Har dermed ikke helt sluttet å kjøpe filmer, men
+holder meg til DVD-filmer som kan spilles av på mine Linuxbokser.
+Kommer neppe til å ta i bruk Blueray, og ei heller de nye DRM-greiene
+«Ultraviolet» som be annonsert her om dagen.</p>
</div>
<div class="tags">
- Tags: <a href="tags/3d-printer">3d-printer</a>, <a href="tags/norsk">norsk</a>, <a href="tags/nuug">nuug</a>.
+ Tags: <a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling</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/opphavsrett">opphavsrett</a>, <a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern</a>.
</div>
</div>
<div class="padding"></div>
<div class="entry">
- <div class="title"><a href="Lenker_samlet_2009_05_09.html">Lenker samlet 2009-05-09</a></div>
- <div class="date">2009-05-09 22:40</div>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/OpenStreetmap_one_step_closer_to_having_routing_on_its_front_page.html">OpenStreetmap one step closer to having routing on its front page</a></div>
+ <div class="date">2010-07-18 16:45</div>
<div class="body">
-<ul>
-
-<li><a href="http://www.aftenposten.no/meninger/kronikker/article3066834.ece">Jeg, et offer</a>
-<br>Aage Borchgrevink drodler om offerrollens framvekst i den norske
-offentligheten.</li>
-
-<li><a href="http://www.nuug.no/pub/video/published/200904-goopen.html">Opptak fra Go Open 2009 på web</a>
-<br>Endelig kan jeg få med meg foredragene jeg gikk glipp av.</li>
-
-<li><a href="http://www.robweir.com/blog/2009/05/update-on-odf-spreadsheet.html">MS Excel 2007 håndterer ODF dårlig</a>
-<br>Microsoft har lykkes med å implementere ODF slik at de ikke
-samhandler med noen av de andre som håndterer ODF-regneark.</li>
-
-<li><a href="http://www.groklaw.net/article.php?story=20090503215045379">MS
-Word 2007 håndterer ODF dårlig</a>
-<br>Fotnoter laget i MS Office blir merkelige i OpenOffice.org.</li>
-
-</ul>
+<p>Thanks to
+<a href="http://feedproxy.google.com/~r/Opengeodata/~3/wUTCzDZk3lc/project-of-the-week-which-way-home">todays
+opengeodata blog entry</a>, I just discovered that the
+OpenStreetmap.org site have gotten
+<a href="http://nroets.dev.openstreetmap.org/demo/index.html?layers=B000FTFTT">support
+for calculating routes</a>. The support is still experimental and
+only available from the development server, until more experience is
+gathered on the user interface and any scalability issues.</p>
+
+<p>Earlier, the routing I knew about using the OpenStreetmap.org data
+was provided by <a href="http://maps.cloudmade.com/">Cloudmade</a>,
+but having it on the main page is required to make everyone aware of
+the issue. I've had people reject Openstreetmap.org as a viable
+alternative for them because the front page lacked routing support,
+and I hope their needs will be catered for when routing show up on the
+www.openstreetmap.org front page.</p>
</div>
<div class="tags">
- Tags: <a href="tags/lenker">lenker</a>, <a href="tags/norsk">norsk</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/kart">kart</a>, <a href="http://people.skolelinux.org/pere/blog/tags/web">web</a>.
</div>
</div>
<div class="padding"></div>
- <p style="text-align: right;"><a href="index.rss"><img src="xml.gif" alt="RSS feed" width="36" height="14"></a></p>
+ <p style="text-align: right;"><a href="index.rss"><img src="http://people.skolelinux.org/pere/blog/xml.gif" alt="RSS feed" width="36" height="14"></a></p>
<div id="sidebar">
<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 (14)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2010/07/">July (12)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2010/08/">August (5)</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 (1)</a></li>
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2009/07/">July (4)</a></li>
+
+<li><a href="http://people.skolelinux.org/pere/blog/archive/2009/08/">August (3)</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 (11)</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 (35)</a></li>
- <li><a href="tags/amiga">amiga (1)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu (40)</a></li>
- <li><a href="tags/aros">aros (1)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/english">english (56)</a></li>
- <li><a href="tags/debian">debian (12)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/fiksgatami">fiksgatami (1)</a></li>
- <li><a href="tags/debian edu">debian edu (7)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/fildeling">fildeling (8)</a></li>
- <li><a href="tags/english">english (13)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/kart">kart (3)</a></li>
- <li><a href="tags/fiksgatami">fiksgatami (1)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/ldap">ldap (8)</a></li>
- <li><a href="tags/fildeling">fildeling (3)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/lenker">lenker (2)</a></li>
- <li><a href="tags/lenker">lenker (1)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/ltsp">ltsp (1)</a></li>
- <li><a href="tags/ltsp">ltsp (1)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/multimedia">multimedia (5)</a></li>
- <li><a href="tags/multimedia">multimedia (4)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/norsk">norsk (71)</a></li>
- <li><a href="tags/norsk">norsk (50)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/nuug">nuug (93)</a></li>
- <li><a href="tags/nuug">nuug (48)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/opphavsrett">opphavsrett (14)</a></li>
- <li><a href="tags/opphavsrett">opphavsrett (5)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/personvern">personvern (15)</a></li>
- <li><a href="tags/personvern">personvern (8)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/reprap">reprap (10)</a></li>
- <li><a href="tags/reprap">reprap (10)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/rss">rss (1)</a></li>
- <li><a href="tags/rss">rss (1)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/sikkerhet">sikkerhet (11)</a></li>
- <li><a href="tags/sikkerhet">sikkerhet (2)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/sitesummary">sitesummary (3)</a></li>
- <li><a href="tags/standard">standard (6)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/standard">standard (13)</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 (8)</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 (4)</a></li>
+ <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (7)</a></li>
</ul>
</div>
<p style="text-align: right">
-Created by <a href="http://steve.org.uk/Software/chronicle">Chronicle v3.5</a>
+Created by <a href="http://steve.org.uk/Software/chronicle">Chronicle v3.7</a>
</p>
</body>
</html>
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