November 21, 2008

Pizza box running NetBSD

It’s a long time since I wanted to run something on the SUN SparcStations I got for Púlsar (unofficial site). Debian is not longer supported on sparc32 due to kernel upstream lack of interest. BSD was the choice then. After a few tries with OpenBSD, we were not able to network boot (diskless setup) the boxes so this morning I gave a try with NetBSD which gave a more verbose output on the start up boot. I’ll try to document all the steps to reproduce and maintain this on the wiki.


spark# uname -a
NetBSD spark 4.0.1 NetBSD 4.0.1 (GENERIC) #0: Wed Oct 8 01:06:02 PDT 2008 builds@wb28:/home/builds/ab/netbsd-4-0-1-RELEASE/sparc/200810080053Z-obj/home/builds/ab/netbsd-4-0-1-RELEASE/src/sys/arch/sparc/compile/GENERIC sparc

January 30, 2008

Home network fully IPv6

It’s some weeks since it’s working, it doesn’t bring too many advantages for me, but it rocks:


bencer@amnesiac:~$ traceroute6 sixxs.net
traceroute to sixxs.net (2001:838:1:1:210:dcff:fe20:7c7c), 30 hops max, 40 byte packets
1 2001:b18:XXX:XXX:XXX (2001:b18:XXX:XXX:XXX) 7.144 ms 7.878 ms 9.067 ms
2 gw-XX.lis-XX.pt.sixxs.net (2001:b18:2000:XXX:XXX:XXX) 130.502 ms 132.025 ms 136.774 ms
3 2001:b18:0:1000::1 (2001:b18:0:1000::1) 139.429 ms 142.619 ms 145.777 ms
4 2001:5a0:1500::1 (2001:5a0:1500::1) 148.324 ms * *
5 2001:5a0:2000:200::1 (2001:5a0:2000:200::1) 184.778 ms * *
6 2001:5a0:2b00::1 (2001:5a0:2b00::1) 237.050 ms 154.980 ms 109.159 ms
7 2001:5a0:2b00::6 (2001:5a0:2b00::6) 115.521 ms * *
8 if-6-0.core1.ad1-amsterdam.ipv6.teleglobe.net (2001:5a0:1300::2) 135.460 ms 135.927 ms 141.817 ms
9 2001:5a0:200::5 (2001:5a0:200::5) 142.443 ms 145.060 ms 147.657 ms
10 2001:7f8:1::a500:3257:1 (2001:7f8:1::a500:3257:1) 156.844 ms 144.081 ms 147.390 ms
11 ge6-2-0.br0.ams3.nl.gbxs.net (2001:7f8:1::a500:9009:1) 150.832 ms 154.401 ms 158.136 ms
12 ams-ix2.ipv6.concepts.nl (2001:7f8:1::a501:2871:2) 178.450 ms 181.350 ms 194.674 ms
13 2001:838:0:13::1 (2001:838:0:13::1) 195.892 ms 219.280 ms 228.867 ms
14 2001:838:0:12::2 (2001:838:0:12::2) 234.728 ms 273.361 ms 276.879 ms
15 noc.sixxs.net (2001:838:1:1:210:dcff:fe20:7c7c) 283.812 ms 291.269 ms 159.547 ms

I wish my tunnel broker supported ipv6 multicast … but anyway, thanks SixXS.

September 21, 2007

The order matters


$ ls file-that-does-not-exist 2>&1 >/dev/null
ls: file-that-does-not-exist: No such file or directory
$ ls file-that-does-not-exist >/dev/null 2>&1
$

If you want both stderr and stdout to go to /dev/null then “>/dev/null 2>&1″, but if you want stdout to go to /dev/null and stderr to go to whereever stdout used to go to, then “2>&1 >/dev/null”.


Thread @ debian-isp

July 24, 2007

LAM-MPI with PG compiler

July 19, 2007

Summer @ Brussels

It’s a week since Soraya and me were are in Brussels working for JADE - European Confederation of Junior Enterprises, I hope to blog more about that in the next days.

This is a nice city, see wikitravel or the wikipedia but I hope to discover more about it with the help of maemo-mapper, that’s why I was looking forward geoinfo about Brussels and I found belgeoblog, where you can download nice POI of Belgium. I wish we could have MetrO public transports database integrated in OSM.

By the way, is there any local geek group here in Brussels ? or any Debian fan who would like to share a great belgian beer ? :-)

July 3, 2007

ebox-platform

This morning I’ve replaced an old Red Hat 5.2 with eBox-Platform. You may find usefull those scripts:

  • users.pl - adds users from a passwd file (NIS environment) to LDAP (eBox environment) with new random passwords (hash conversion is not possible).
  • dns.pl - adds hosts to the DNS server from a simple paired list host,ip.

Many thanks guys@warp :=)

June 26, 2007

Silent radio day

Today most of the online radios are quiet. Why?.

June 20, 2007

Thanks to Debconf Video Team

Thanks to everybody involved in the Video Team recording the talks and BoFs so the people who can’t be there we feel closer. Maybe the streaming is not as successful as expected because the same obligations that keep out being there, don’t let you watch the videos on live but anyway, those records are the link between the Debconf and the rest of the world.

June 19, 2007

Foocast

¿Queréis bajaros un podcast y no saber de que van a hablar? Está hecho por geeks para geeks, podéis estar seguros de que os va a gustar: comentarios sobre noticias de menéame, barrapunto o sitios ingleses como digg o slashdot, novedades en internet, política, foo-historias, también bar, enfín: foocast, podcast sobre noticias del mundo tecnológico (y en castellano).

Si os gustaron los famosos videos de magnetic, queréis intentar entender a isaac o que koke os cuente alguna historia, foocast no defrauda.

June 16, 2007

Issues on cauterized.net

The last 24H have been a nightmare for cauterized.net. Yesterday the machine got frozen, too many process running and a huge HTTP traffic. What we thought it was some kind of DoS after a closer look just were the eBox-Platform users downloading lastest iso images from mirrors.cauterized.net.

The system logs where not reporting anything related to the hangs and due to these busy days (exams) wasn’t until this morning when I discovered that some files of the IMEMC site where corrupted and just a stat() on them made the server freeze.

We have repaired the disk issues and the whole server is online again after a couple of hours offline this morning.

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