X-Git-Url: http://pere.pagekite.me/gitweb/homepage.git/blobdiff_plain/e934bed999bdfe5d2788e2bb5dd6212b311a9bad..860757b62097c08ec1d6987a111f91d2b45ad8c5:/blog/archive/2009/03/03.rss diff --git a/blog/archive/2009/03/03.rss b/blog/archive/2009/03/03.rss index e3077cbd5e..697750f37d 100644 --- a/blog/archive/2009/03/03.rss +++ b/blog/archive/2009/03/03.rss @@ -3,13 +3,13 @@ Petter Reinholdtsen - Entries from March 2009 Entries from March 2009 - ../../../ + http://people.skolelinux.org/pere/blog/ Teknisk program for Go Open 2009 er nesten ferdig - ../../../Teknisk_program_for_Go_Open_2009_er_nesten_ferdig.html - ../../../Teknisk_program_for_Go_Open_2009_er_nesten_ferdig.html + http://people.skolelinux.org/pere/blog/Teknisk_program_for_Go_Open_2009_er_nesten_ferdig.html + http://people.skolelinux.org/pere/blog/Teknisk_program_for_Go_Open_2009_er_nesten_ferdig.html Thu, 5 Mar 2009 22:30:00 +0100 <p>Etter lang tids jobbing begynner endelig programmet til det @@ -45,8 +45,8 @@ stort.</p> Lisensvalg for NUUG-opptakene endelig på plass - ../../../Lisensvalg_for_NUUG_opptakene_endelig_p___plass.html - ../../../Lisensvalg_for_NUUG_opptakene_endelig_p___plass.html + http://people.skolelinux.org/pere/blog/Lisensvalg_for_NUUG_opptakene_endelig_p___plass.html + http://people.skolelinux.org/pere/blog/Lisensvalg_for_NUUG_opptakene_endelig_p___plass.html Fri, 6 Mar 2009 21:20:00 +0100 <p>Etter mange års meditasjon over temaet, har NUUG endelig klart å @@ -63,8 +63,8 @@ i denne sammenhengen.</p> Frikanalen og jul i studentrådet - ../../../Frikanalen_og_jul_i_studentr__det.html - ../../../Frikanalen_og_jul_i_studentr__det.html + http://people.skolelinux.org/pere/blog/Frikanalen_og_jul_i_studentr__det.html + http://people.skolelinux.org/pere/blog/Frikanalen_og_jul_i_studentr__det.html Wed, 11 Mar 2009 23:40:00 +0100 <p>I går @@ -111,8 +111,8 @@ NUUG lykkes med å få ut sine opptak med like stor suksess.</p> Testing av reprap-elektronikken igang - ../../../Testing_av_reprap_elektronikken_igang.html - ../../../Testing_av_reprap_elektronikken_igang.html + http://people.skolelinux.org/pere/blog/Testing_av_reprap_elektronikken_igang.html + http://people.skolelinux.org/pere/blog/Testing_av_reprap_elektronikken_igang.html Thu, 12 Mar 2009 16:00:00 +0100 <p>Lenge siden det var en oppdatering av status for min 3D-skriver og @@ -151,8 +151,8 @@ reprap-en kvikner til.</p> En skam at det ikke finnes ordrett referat fra norske domstoler - ../../../En_skam_at_det_ikke_finnes_ordrett_referat_fra_norske_domstoler.html - ../../../En_skam_at_det_ikke_finnes_ordrett_referat_fra_norske_domstoler.html + http://people.skolelinux.org/pere/blog/En_skam_at_det_ikke_finnes_ordrett_referat_fra_norske_domstoler.html + http://people.skolelinux.org/pere/blog/En_skam_at_det_ikke_finnes_ordrett_referat_fra_norske_domstoler.html Fri, 13 Mar 2009 18:00:00 +0100 <p>Advokatene jobber i disse dager hardt for å bli kvitt juryordningen @@ -184,8 +184,8 @@ publisert offentlig på web.</p> Avisene i endring - ../../../Avisene_i_endring.html - ../../../Avisene_i_endring.html + http://people.skolelinux.org/pere/blog/Avisene_i_endring.html + http://people.skolelinux.org/pere/blog/Avisene_i_endring.html Sun, 15 Mar 2009 22:15:00 +0100 <p>Jeg kom over bloggposten @@ -199,8 +199,8 @@ eksisterer. Det blir spennende å se hva vi ender opp med.</p> Første reprap-integreringsforsøk - Z-aksen beveger seg - ../../../F__rste_reprap_integreringsfors__k___Z_aksen_beveger_seg.html - ../../../F__rste_reprap_integreringsfors__k___Z_aksen_beveger_seg.html + http://people.skolelinux.org/pere/blog/F__rste_reprap_integreringsfors__k___Z_aksen_beveger_seg.html + http://people.skolelinux.org/pere/blog/F__rste_reprap_integreringsfors__k___Z_aksen_beveger_seg.html Thu, 19 Mar 2009 22:15:00 +0100 <p>I går tok jeg mot til meg, og løste problemet med @@ -239,8 +239,8 @@ limet egentlig heter, så det er vanskelig å søke på nett.</p> Vitenskapens dogmer... - ../../../Vitenskapens_dogmer___.html - ../../../Vitenskapens_dogmer___.html + http://people.skolelinux.org/pere/blog/Vitenskapens_dogmer___.html + http://people.skolelinux.org/pere/blog/Vitenskapens_dogmer___.html Fri, 27 Mar 2009 11:30:00 +0100 <p>Handspåleggere og andre tilhengere av ikke-etterprøvbar medisin, @@ -316,8 +316,8 @@ skyskrapere. Takke meg til en tur til månen.</p> Hva er egentlig en åpen standard? - ../../../Hva_er_egentlig_en___pen_standard_.html - ../../../Hva_er_egentlig_en___pen_standard_.html + http://people.skolelinux.org/pere/blog/Hva_er_egentlig_en___pen_standard_.html + http://people.skolelinux.org/pere/blog/Hva_er_egentlig_en___pen_standard_.html Sat, 28 Mar 2009 10:50:00 +0100 <p>Jeg møter alle slags interessante mennesker på min vei, og et møte @@ -421,5 +421,104 @@ av en standard for at en standard skal kunne kalles fri og åpen.</p> + + Time for new LDAP schemas replacing RFC 2307? + http://people.skolelinux.org/pere/blog/Time_for_new__LDAP_schemas_replacing_RFC_2307_.html + http://people.skolelinux.org/pere/blog/Time_for_new__LDAP_schemas_replacing_RFC_2307_.html + Sun, 29 Mar 2009 20:30:00 +0200 + +<p>The state of standardized LDAP schemas on Linux is far from +optimal. There is RFC 2307 documenting one way to store NIS maps in +LDAP, and a modified version of this normally called RFC 2307bis, with +some modifications to be compatible with Active Directory. The RFC +specification handle the content of a lot of system databases, but do +not handle DNS zones and DHCP configuration.</p> + +<p>In <a href="http://www.skolelinux.org/">Debian Edu/Skolelinux</a>, +we would like to store information about users, SMB clients/hosts, +filegroups, netgroups (users and hosts), DHCP and DNS configuration, +and LTSP configuration in LDAP. These objects have a lot in common, +but with the current LDAP schemas it is not possible to have one +object per entity. For example, one need to have at least three LDAP +objects for a given computer, one with the SMB related stuff, one with +DNS information and another with DHCP information. The schemas +provided for DNS and DHCP are impossible to combine into one LDAP +object. In addition, it is impossible to implement quick queries for +netgroup membership, because of the way NIS triples are implemented. +It just do not scale. I believe it is time for a few RFC +specifications to cleam up this mess.</p> + +<p>I would like to have one LDAP object representing each computer in +the network, and this object can then keep the SMB (ie host key), DHCP +(mac address/name) and DNS (name/IP address) settings in one place. +It need to be efficently stored to make sure it scale well.</p> + +<p>I would also like to have a quick way to map from a user or +computer and to the net group this user or computer is a member.</p> + +<p>Active Directory have done a better job than unix heads like myself +in this regard, and the unix side need to catch up. Time to start a +new IETF work group?</p> + + + + + Returning from Skolelinux developer gathering + http://people.skolelinux.org/pere/blog/Returning_from_Skolelinux_developer_gathering.html + http://people.skolelinux.org/pere/blog/Returning_from_Skolelinux_developer_gathering.html + Sun, 29 Mar 2009 21:00:00 +0200 + +<p>I'm sitting on the train going home from this weekends Debian +Edu/Skolelinux development gathering. I got a bit done tuning the +desktop, and looked into the dynamic service location protocol +implementation avahi. It look like it could be useful for us. Almost +30 people participated, and I believe it was a great environment to +get to know the Skolelinux system. Walter Bender, involved in the +development of the Sugar educational platform, presented his stuff and +also helped me improve my OLPC installation. He also showed me that +his Turtle Art application can be used in standalone mode, and we +agreed that I would help getting it packaged for Debian. As a +standalone application it would be great for Debian Edu. We also +tried to get the video conferencing working with two OLPCs, but that +proved to be too hard for us. The application seem to need more work +before it is ready for me. I look forward to getting home and relax +now. :)</p> + + + + + Standardize on protocols and formats, not vendors and applications + http://people.skolelinux.org/pere/blog/Standardize_on_protocols_and_formats__not_vendors_and_applications.html + http://people.skolelinux.org/pere/blog/Standardize_on_protocols_and_formats__not_vendors_and_applications.html + Mon, 30 Mar 2009 11:50:00 +0200 + +<p>Where I work at the University of Oslo, one decision stand out as a +very good one to form a long lived computer infrastructure. It is the +simple one, lost by many in todays computer industry: Standardize on +open network protocols and open exchange/storage formats, not applications. +Applications come and go, while protocols and files tend to stay, and +thus one want to make it easy to change application and vendor, while +avoiding conversion costs and locking users to a specific platform or +application.</p> + +<p>This approach make it possible to replace the client applications +independently of the server applications. One can even allow users to +use several different applications as long as they handle the selected +protocol and format. In the normal case, only one client application +is recommended and users only get help if they choose to use this +application, but those that want to deviate from the easy path are not +blocked from doing so.</p> + +<p>It also allow us to replace the server side without forcing the +users to replace their applications, and thus allow us to select the +best server implementation at any moment, when scale and resouce +requirements change.</p> + +<p>I strongly recommend standardizing - on open network protocols and +open formats, but I would never recommend standardizing on a single +application that do not use open network protocol or open formats.</p> + + +