In the Squeeze version of -Debian Edu / Skolelinux soon -to be released, users of the system will get their default browser -start page set from LDAP, allowing the system administrator to point -all users to the school web page by updating one setting in LDAP. In -addition to setting the default start page when a machine boots, users -are shown the same page as a welcome page when they log in for the -first time.
- -The LDAP object dc=skole,dc=skolelinux,dc=no have an attribute -labeledURI with "http://www/ LDAP for Debian Edu/Skolelinux" as the -default content. By changing this value to another URL, all users get -to see the page behind this new URL.
- -An easy way to update it is by using the ldapvi tool. It can be -called as "ldapvi -ZD '(cn=admin)'' to update LDAP with the -new setting.
- -We have written the code to adjust the default start page and show -the welcome page, and I wonder if there is an easier way to do this -from within Iceweasel instead.
+ +Den siste uka har det vært en del skriverier om hvor store +forskjeller det er mellom skolene når det gjelder digital kompetanse. +Et eksempel er +oppslaget +i Digi. Diskusjonen fikk meg til å bli litt nysgjerrig på om +Linux-skoler har større PC-tettet enn snittet i landet. Grunnlaget +for diskusjonen har vært undersøkelsen +Monitor +2011, som bruker informasjon fra +Grunnskolens Informasjonssystem +(GSI). GSI-data kan lastes ned fra web og jeg lastet ned en Excel-fil +(intet åpen standard-valg tilgjengelig) med navn på alle skoler, +hvilke kommune de befinner seg i og hvor mange elever pr. elev-PC de +har rapportert inn. For å få en ide om svaret trenger jeg deretter å +vite hvilke skoler i landet som bruker Linux, slik at jeg kan slå dem +opp i GSI og finne ut hvor stor PC-tetthet de har.
+ +Jeg vet om skoler i Balsfjord, Flora, Harstad, Kongsvinger, Narvik, +Nittedal, Nord-Odal, Randaberg og Sunndal som bruker Skolelinux eller +andre Linux-varianter. Jeg tror det er flere enn de 56 skolene jeg +har klart å identifisere de siste dagene, men har ikke klart å få det +bekreftet med offentlige kilder.
+ +Monitor 2011-rapporteres side 95 forteller at det "ifølge GSI +(20120-2011) er det 3,11 elever per datamaskin når vi tar med alle +grunnskoler (1.-10.trinn)". For de 56 Linux-skolene jeg har klart å +koble mot informasjon i GSI er det 2,28 elever per elevdatamaskin, +hvilket betyr at det er 36% høyere PC-tetthet på Linux-skoler enn +landsgjennomsnittet. Linux-skolen med høyest tettet blant de jeg har +notert -skole er Flora ungdomsskule i Flora kommune med 0.82 elev +pr. PC (482 elever, 588 elevdatamaskiner).
+ +Skolelinux gir datamaskiner lengre levetid, og en kan dermed få +flere operative datamaskiner for samme budsjett, i tillegg til en +rekke andre fordeler. Kan det være forklaringen på forskjellen?
+ +Tallene må tas med en liten klype, da GSI ser ut til å ha endel +feilføringer. Jeg synes i hvert fall en skole med 423 elever og 9 +elevmaskiner ser mistenkelig ut. Eller en skole med 346 elever, 0 +elevmaskiner, som er et annet ekstremt eksempel jeg fant.
+ +Takk til Sturle Sunde, Klaus Ade Johnstad, Ole-Anders Andreassen og +Trond Mæhlum for innspill om skoler med Linux.
I am happy to announce that today we managed to wrap up and publish -the second beta version of -Debian Edu / Skolelinux. If -you want to test a LDAP backed Kerberos server with out of the box PXE -configuration for running diskless machines and installing new -machines, check it out. If you need a software solution for your -school, check it out too. The full announcement is -available -on the project announcement list.
+ +Debian Edu / Skolelinux +users are spread all across the globe. The second inteview after +the +Squeeze release was publised is with John Ingleby, a teacher and +long time Linux user in United Kingdom.
+ +Who are you, and how do you spend your days?
+ +I teach ICT part time at the Rudolf Steiner School in Kings +Langley, near London, UK. Previously I worked as a technical +author/trainer while my children attended the school, and I also +contributed to the Schoolforge UK community with the aim of +encouraging UK schools to adopt free/open source software. Five or six +years ago we had about 50 schools interested in some way, but we +weren't able to convert many of them into sustainable +installations.
+ +How did you get in contact with the Skolelinux/Debian Edu +project?
+ +Skolelinux had two representatives at an early Edubuntu meeting in +London which I attended. However at that time our school network had +just been installed using CentOS, LTSP 4 and GNOME. When LTSP 5 came +along we switched to Edubuntu thin client servers so now we have a +mixed environment which includes Windows PCs and student laptops, as +well as their MacBooks and iPads. However, the proprietary systems +have always been rather problematic, and we never built a GUI for the +LDAP server, so when I discovered Skolelinux is configured for all +these things we decided to try it.
+ +What do you see as the advantages of Skolelinux/Debian +Edu?
+ +By far the biggest advantage is the Debian Edu community. Apart +from that I have always believed in the same "sustainable computing" +goals that Skolelinux is built on: installing Linux on computers which +would otherwise be thrown away, to provide a reliable, secure and +low-cost IT environment for schools. From my own experience I know +that a part-time person can teach and manage a network of about 25 +Linux computers, but it would take much more of my time if we had +proprietary software everywhere.
+ +What do you see as the disadvantages of Skolelinux/Debian +Edu?
+ +As a newcomer I'm just finding out who's who in the community and +how you're organised, and what your procedures are for dealing with +various things such as editing manual pages and so-on. The only +English language mailing list seems to be for developers as well as +users, so my inbox needs heavy pruning each day!
+ +Which free software do you use daily?
+ +Besides the software already mentioned at school we use Samba, +OpenLDAP, CUPS, Nagios and Dansguardian for the network, and on the +desktops we have LibreOffice, Firefox, GIMP and Inkscape. At home I +use Ubuntu and an Android 4 eePad Transformer (but I'm not sure if +that counts...)
+ +Which strategy do you believe is the right one to use to +get schools to use free software?
+ +That's a tough question! For very many years UK schools installed +and taught only proprietary software, so that at the highest levels +the notion of "computer" means simply "proprietary office +applications". However, schools today are experiencing budget +constraints, and many are having to think hard about upgrading Windows +XP. At the same time, we have students showing teachers how to use +iPads, MacBooks and Android, so the choice of operating system is no +longer quite so automatic. What is more, our government at last +realised that we need people with programming skills, so they're +putting coding back in the curriculum! And it's encouraging that the +first 10,000 Raspberry Pi units sold out in 2 hours.
+ +I don't really know what strategy is going to get UK schools to use +free software, but building an active community of Skolelinux/Debian +Edu users in this country has to be part of it.
During christmas, I have been working getting the next version of -Debian Edu / Skolelinux ready -for release. The initial problem I looked at was particularly -interesting.
- -The installer would hang at the end when it was doing it -post-installation configuration, and whatevery I did to try to find -the cause and fix it always worked while I tested it, but never when I -integrated it into the installer and ran the installation from -scratch. I would try to restart processes, close file descriptors, -remove or create files, and the installer would always unblock and -wrap up its tasks.
- -Eventually the cause was found. The kernel was simply running out -of entropy, causing the Kerberos setup to hang waiting for more. -Pressing keys was adding entropy to the kernel, and thus all my tries -to fix the problem worked not because what I was typing to fix it, but -because I was typing.
- -The fix I implemented was to add a background process looking at -the level of entropy in the kernel (by checking -/proc/sys/kernel/random/entropy_avail), and if it was too small, the -installer will flush the kernel file buffers and do 'find /' to -generate some disk IO. Disk IO generate entropy in the kernel, and is -one of the few things that can be initated from within the system to -generate entropy.
- -The fix is in -beta1 -of the Debian Edu/Squeeze version, and we -welcome more testers and -developers. We plan to release beta2 this weekend.
+ +Documentation in Debian Edu is provided in several languages, and +it is important to make it both easy to contribute and to keep the +translated versions in sync. To do this we have come up with what we +believe is a very efficient work flow.
+ +-
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- The documentation is written in a +moinmoin wiki (see for example +the +Squeeze release manual) with support for exporting the content as +docbook XML. + +
- This docbook document is given to po4a to extract a gettext style +.pot file with the content, which in turn is used to create .po files +with the translated text. + +
- The .po files are given to translators, and they can always tell +which part of the original wiki document is new or changed. They can +use their normal translation tools like lokalize or poedit to write +the translation. There is even a system in place to handle translated +images. + +
- The translated .po files are combined with the original docbook +XML document using po4a to create a translated docbook document. + +
- The final step is to use all the generated docbook files and +create PDF and HTML version of the original and translated documents. + +
This setup work very well, but have a few issues. The biggest +issue is that the docbook support +we use in moinmoin is not actively maintained. The docbook +support is also buggy, and our build system contain workarounds to +make sure the generated docbook is usable despite these bugs.
+ +If you want to have a look at our setup, it is all there in the +debian-edu-doc +package.