News archive November 2010 - Koos van den Hout

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2010-11-30 (#) 9 years ago
Something which bothered us at work for some time now is the weird habit of our Xen servers to report:
Error: (12, 'Cannot allocate memory')
Where we think there is enough (18G free at the moment) to allocate for a 512 Mb virtual machine. I searched high and low for this before but never found a working answer. With some other changes in the Xen cluster planned I was looking for answers again to this problem and found: Xen, HVM, and running out of memory which shows that the size of dom0 may be causing this. Asking Xen for memory info gives totally different numbers:
# xm info
..
total_memory           : 24570
free_memory            : 4
I guess the dom0 has somehow allocated those 18G in a way which Xen can't get back. Now to see whether adjusting dom0_mem will fix this...
Update: It took longer than expected because other parts of Xen acted up again, but the Xen cluster is available again with better memory allocation giving us a lot more space for virtual machine services.
# xm info
..
total_memory           : 24570
free_memory            : 14668
That is on the machine running most virtual machine services.

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2010-11-30 (#) 9 years ago
Good news, the website of xs4all is reachable via IPv6 now:
www.xs4all.nl has address 194.109.6.92
www.xs4all.nl has IPv6 address 2001:888:0:18::80
This means long work with load-balancers has finally resulted in something which can deal with the load and the wishes of xs4all.

My congratulations to xs4all and the people who made this possible!


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2010-11-28 (#) 9 years ago
This morning it was 2⁰C out in the shed as measured by the weather station. The computer is still running ok, according to smartmontools the current disk temperature is 22⁰C so that is still reasonable.

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2010-11-26 (#) 9 years ago
Ik hing vandaag (om hele goeie redenen) 3 kwartier aan de lijn met een 00800 nummer (international free phone, internationaal gratis nummer). Tijdens een deel van dat gesprek wat ik in de wacht hing vroeg ik me zo af wat dat nou de ontvanger zou kosten per minuut. Een simpele google zoekactie leverde vooral tarieven op voor het bellen naar 00800 nummers. Diverse mobiele aanbieders beweren namenlijk van harte dat het servicenummers zijn die 25 cent per minuut moeten kosten, o.a. Ben prepaid en Simyo. In de tarievenlijst van youfone eindeloos staat het volgens mij zelfs misleidend:
00800 servicenummers Tarief servicenummer + € 0,25 per minuut
Dat kan helemaal niet, want 00800 nummers hebben geen tarief. Maargoed, youfone haalt ook 084/087 en 085/088 door elkaar kwa tarieven (084 en 087 mag je servicenummers noemen, 085 zou gewoon tarief moeten zijn), dus die doen wel meer rare dingen.

In de tarieven voor KPN telefooncellen staat de uitleg

Je kunt ook 00800-nummers bellen. Dit zijn nummers die gebeld worden door mensen met een buitenlandse belkaart, waarvoor KPN geen kostenvergoeding ontvangt voor het gebruik van de telefooncel. Hiervoor geldt een tarief van € 0,10 per 29 seconden.
Enfin, uiteindelijk niet gevonden wat een 00800 gesprek nu de ontvanger zou kunnen kosten. Aangezien ik acuut iemand aan de lijn kreeg in North Carolina in de US, in de nachtdienst maar zeker met goede kennis van zaken zal het wel een aardig bedrag gekost hebben aan dat bedrijf.

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2010-11-24 (#) 9 years ago
My best guess is that the interesting ipv6 icmp traffic I mentioned before is part of the efforts of Akamai to build a 'performance map' of the IPv6 Internet, as mentioned in Akamai: Why our IPv6 upgrade is harder than Google's - Network World.
What we do in our mapping infrastructure is to build a performance map of the Internet. A lot of what we do for our content provider customers is provide superior performance by providing route optimization across the fabric of the 12,000 service providers that are the Internet.
So my old IPv6 nameserver address is part of this mapping effort. This traffic would stay under the radar if it wasn't the only traffic left on my old IPv6 tunnel link. My guess is based on the pattern in the addresses, and all whois records which give a detailed enough answer show Akamai.

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2010-11-23 (#) 9 years ago
Shednet with weatherstation
Shednet with weatherstation
In the recent days I have been running the shednet computer again, this time with the conrad weather station attached. This is mainly for finding out what the climate in the shed is to help decide on hardware choices and setup.

The climate (in the shed) is different from what I expected: humidity is (so far) within limits of what the current PC (a Dell optiplex GX270) can handle. I expected humidity to become a problem before temperature. Temperatures are at the moment dropping below 'operating range' and a couple of cold days are coming up here in the Netherlands.

You can view the results at the weather station page but remember this is in the shed. Real measurements done with (something resembling) meteorological standards will be later.

But these measurements have learned me a few things and helped with a few decisions for the project sundial weather station:

  • The humidity in the shed is not much of a problem.
  • The temperature might be, but if a really low-power PC in an IP66 housing can survive an outdoor climate, it should survive in the shed.
  • The conrad temperature sensor is not very precise in outdoor temperatures. So the 'outdoor' temperature / humidity will be measured using 1-wire sensors hooked up to the future weather station computer. The Netley Marsh 1 wire weather station has nice ideas and pictures how this can be done and a small 'sensor house' like the one they use would fit better in our back garden than a full-size Stevenson Screen (the official name of the white 'meteorological hut' which tries to shield thermometer and hygrometer from local influences).
The flickr picture is also some experimenting with the gimp.

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2010-11-19 (#) 9 years ago
Naar aanleiding van de berichtgeving over de bezwaren van inwoners van Utrecht tegen het opslaan van vingerafdrukken bij het aanvragen van een paspoort en de uitspraken over vingerafdrukken door Burgemeester Wolfsen van Utrecht die duidelijk niet gehinderd is door kennis van zaken heeft D66 Utrecht maar eens wat vragen gesteld aan het college van Burgemeester en Wethouders. Het artikel leest wat tam maar de schriftelijke vragen zelf zijn wat pittiger. Ik ben wel benieuwd naar de antwoorden.

Jammer dat D'66 Utrecht documenten publiceert in een gesloten en van een leverancier afhankelijk formaat. Met openoffice conversie gedaan naar pdf: 20101119_SV_bio_metrisch_paspoort_KV schriftelijke vragen D'66 Utrecht aan het college Burgemeesters en Wethouders van Utrecht inzake opslag bio-metrische gegevens in Paspoort en Databank.


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2010-11-19 (#) 9 years ago
I found out this week that the rfid card my employer uses to give out coffee is also a mifare classic card. Some searching on mifare related terms let me to Magna Carta and the name on the chipcard readers I see at work is also 'Magna Carta'. And another source told me that the touchatag reader can read mifare cards. I have played with touchatag tags before at the alcatel-lucent user conference.

I've been interested in rfid before, but the high cost of 'universal' (all rfid standards) readers were prohibitive. The touchatag is not a universal reader but gives me enough to begin with: For 30 euro I get a reader and some tags to play with, and the chance to read mifare cards such as the UU koffiekaart and the OV-chipkaart.

So I ordered the touchatag starter pack.
Update 2010-12-01: Nothing received other than a credit card statement, so I inquired about the state of the order.
Update 2010-12-02: On the same day a reply that the package was sent 2010-11-19.. and a package. Airmail wasn't was fast as expected...

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2010-11-18 (#) 9 years ago
Burgemeester Wolfsen van Utrecht doet wat uitspraken niet gehinderd door kennis van zaken in het lokale sufferdje:
Wat vindt burgemeester Wolfsen? “Vingerafdrukken zeggen in het geheel niets over iemands persoonlijkheid, dús zijn ze niet persoonlijk. Ook heb ik geen bezwaar tegen opslag in een centrale databank. Dat helpt dure fraude en misbruik te voorkomen.
met nog een mooie afsluiter die ik ook 'een beetje dom' zou willen noemen:
En vreest de burgemeester ook niet, zoals veel bezwaarmakers, misbruik van de gegevens, te meer daar het systeem misschien door het Franse wapenbedrijf MORPHO wordt gebouwd? “Wié een systeem bouwt, lijkt me niet relevant. Het gaat om het gebruik ervan. En een goede beveiliging is inderdaad cruciaal.” Hij voegt hieraan toe: “We moeten ervan uitgaan dat dat op rijksniveau in orde is.”
Bron: stadsblad Utrecht 17 november 2010 (PDF formaat).

Alleen dankzij de moderne techniek kan iedereen meegenieten en er vrolijk over twitteren enzo.

RTV Utrecht reageert nog uitermate lief:
Uitspraken van Wolfsen over een vingerafdrukkendatabase in het Stadsblad hebben voor ophef gezorgd. In diverse media wordt de burgemeester van Utrecht van naïviteit beschuldigd.
Bron: Ophef uitspraken Wolfsen over vingerafdruk.

Ik hou het maar op 'een beetje dom'. Van een burgemeester zou ik iets meer wetskennis verwacht hebben.


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2010-11-18 (#) 9 years ago
I installed a Digi CM console server today and the initial setup has two approaches:
From the CD, run the Advance Device Discovery Protocol application to locate the Digi CM on the network. In firmware 1.8 and greater, the CM has SNMP, SSHv1, and Telnet to the command line disabled by default, and http is automatically redirected to https. To perform initial device configuration, use the discovery tool on the CD
or ..
Are you a POWER USER? Use the configuration menu: 1. Establish a serial connection through the console port (9600, 8, N, 1). 2. Login as root and password dbps. 3. Type the command configmenu. Select option 1 - Network Configuration and follow the prompts.
Hardware with the bofh nature. I like it.

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2010-11-18 (#) 9 years ago
Politiek is een mooi vak, daar kan James Sharpe beweren:
"Ik heb niets te verbergen."
direct gevolgd door
"Maar ik zie al voor me dat allerlei exen van alles over mij gaan vertellen."
zonder dat de verslaggever eens flink doorzaagt over de tegenstelling die hier staat.

Bron: Wilders respecteert vertrek PVV'er Sharpe - NOS Nieuws


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2010-11-16 (#) 9 years ago
Another solution for fixing the over-eager IntelliPark feature of Western Digital 'Caviar green' disks: Robert Waldner has documented where to get the WD util which sets a more usable parking time and how to build a freedos disk from linux.

I had this issue in a disk in the homeserver greenblatt before but I have a disk which listens to hdparm -B.


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2010-11-15 (#) 9 years ago
Eneco prutst vrolijk verder en stuurt de reclame voor een speciale aanbieding voor klanten via een andere e-mail verzender spammer dan de mail over de betalingen.

Ik kreeg vanmiddag mail over een besparende wasbol en de links daar in zijn ook weer van het tracking type:

Wilt u geen berichten meer ontvangen van Eneco, meld u dan hier af:
http://mail.eneco.nl/2/3fde84dda3a1....
Maar dat is weer een andere spammer:
$ host mail.eneco.nl
mail.eneco.nl is an alias for myclang.com.
myclang.com has address 217.148.80.240
myclang.com mail is handled by 10 mail.e-village.nl.
myclang.com mail is handled by 20 mail1.e-village.nl.
myclang.com mail is handled by 30 mail2.e-village.nl.
En volgens mijn 'contactprofiel' bij Eneco wil ik helemaal niet "Informatie over gewijzigde tarieven, producten en diensten van Eneco" via e-mail. Maar het kopje 'Aanbiedingen' is apart en daar was nog niets ingevuld (wat blijkbaar gezien wordt als toestemming). Dat is vast omdat het kopje 'Aanbiedingen' er nog niet was toen ik invulde dat ik "informatie" via de post wilde. Het is misschien achterhaald volgens TNT post maar ik vind het wel prettig als er een prijskaartje hangt aan het mij op de hoogte stellen van nieuwe aanbiedingen.

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2010-11-15 (#) 9 years ago
In september 2009 klaagde ik over de misleidende links van eneco in hun e-mail. Ineens viel het me op dat er in een mailtje van vanmorgen staat:
Direct mijn nota betalen                                                        
http://e-mail.eneco.nl/public/r/4AFPAujKQ.....
dat lijkt via eneco te gaan. Maar de link lijkt wel erg op zo'n tripolis tracking link. Dat klopt ook bij nadere controle:
$ host e-mail.eneco.nl
e-mail.eneco.nl is an alias for veritate.tripolis.com.
veritate.tripolis.com has address 80.69.72.81
veritate.tripolis.com mail is handled by 100 mx2.dialogue.tripolis.com.
veritate.tripolis.com mail is handled by 100 mx1.dialogue.tripolis.com.
Nee, nogsteeds niet veilig om op te klikken. En nog misleidender eigenlijk, het lijkt nu onder controle van eneco maar dat is het niet.

Bij nazoeken blijkt dit in Juli 2010 ingegaan te zijn. Ik vermoed dat enige overeenkomst met wanneer Thunderbird ging melden 'this message may be a scam' bij links die helemaal niet kloppen met de linktekst (type <a href="http://site.domain1..">http://anderesite.anderdomain/..</a>) er misschien iets mee te maken had.

Mijn alarm voor 'scam' gaat nogsteeds af, nu nog harder nu ze de externe invloed proberen te maskeren.


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2010-11-15 (#) 9 years ago
Another SIP scan and traffic flood going on, this time from 84.124.101.65. It started like all the others:
[2010-11-14 07:05:40] NOTICE[6576] chan_sip.c: Registration from '"728107069"<sip:728107069@mm.nn.oo.pp>' failed for '84.124.101.65' - No matching peer found
[2010-11-14 07:05:40] NOTICE[6576] chan_sip.c: Registration from '"3220398202"<sip:3220398202@mm.nn.oo.pp>' failed for '84.124.101.65' - No matching peer found
[2010-11-14 07:05:47] NOTICE[6576] chan_sip.c: Registration from '"728107069" <sip:728107069@mm.nn.oo.pp>' failed for '84.124.101.65' - No matching peer found
[2010-11-14 07:06:13] NOTICE[6576] chan_sip.c: Registration from '"728107069" <sip:728107069@mm.nn.oo.pp>' failed for '84.124.101.65' - No matching peer found
[2010-11-14 07:06:13] NOTICE[6576] chan_sip.c: Registration from '"728107069" <sip:728107069@mm.nn.oo.pp>' failed for '84.124.101.65' - No matching peer found
[2010-11-14 07:06:13] NOTICE[6576] chan_sip.c: Registration from '"728107069" <sip:728107069@mm.nn.oo.pp>' failed for '84.124.101.65' - No matching peer found
[2010-11-14 07:06:13] NOTICE[6576] chan_sip.c: Registration from '"728107069" <sip:728107069@mm.nn.oo.pp>' failed for '84.124.101.65' - No matching peer found
[2010-11-14 07:06:13] NOTICE[6576] chan_sip.c: Registration from '"728107069" <sip:728107069@mm.nn.oo.pp>' failed for '84.124.101.65' - No matching peer found
[2010-11-14 07:06:13] NOTICE[6576] chan_sip.c: Registration from '"728107069" <sip:728107069@mm.nn.oo.pp>' failed for '84.124.101.65' - No matching peer found
And fail2ban picked it up soon. But it is still active, causing delays for me.
SIP packet:
        Via: SIP/2.0/UDP 192.168.130.65:5070;branch=z9hG4bK-3016029746;rport
            Transport: UDP
            Sent-by Address: 192.168.130.65
            Sent-by port: 5070
            Branch: z9hG4bK-3016029746
            RPort: rport
        Content-Length: 0
        From: "728107069" <sip:728107069@mm.nn.oo.pp>
            SIP Display info: "728107069" 
            SIP from address: sip:728107069@mm.nn.oo.pp
        Accept: application/sdp
        User-Agent: friendly-scanner
        To: "728107069" <sip:728107069@mm.nn.oo.pp>
            SIP Display info: "728107069" 
            SIP to address: sip:728107069@mm.nn.oo.pp
        Contact: sip:123@84.124.101.65:42529
            Contact Binding: sip:123@84.124.101.65:42529
                URI: sip:123@84.124.101.65:42529\r
                    SIP contact address: sip:123@84.124.101.65:42529\r
        CSeq: 1 REGISTER
            Sequence Number: 1
            Method: REGISTER
        Call-ID: 3948668237
        Max-Forwards: 70

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2010-11-11 (#) 9 years ago
The traffic through the old IPv6 tunnel has picked up again, strangely enough. Lots of pings, with an interesting pattern:
22:48:16.386678 IP6 2001:44b8:4020::3ba7:c00d > old-greenblatt.idefix.net: ICMP6, echo request, seq 2551, length 64
22:48:43.153243 IP6 2001:418:2007::c611:f352 > old-greenblatt.idefix.net: ICMP6, echo request, seq 33555, length 64
22:48:47.752944 IP6 2001:559:0:300::6011:9036 > old-greenblatt.idefix.net: ICMP6, echo request, seq 14673, length 64
22:48:48.155782 IP6 2001:559:0:300::6011:9023 > old-greenblatt.idefix.net: ICMP6, echo request, seq 43716, length 64
22:48:55.208693 IP6 2001:450:2025::40d0:a419 > old-greenblatt.idefix.net: ICMP6, echo request, seq 19418, length 64
22:48:57.628638 IP6 2001:418:3808:100::48f7:2e6f > old-greenblatt.idefix.net: ICMP6, echo request, seq 51787, length 64
22:50:36.220974 IP6 2001:418:8404::cc02:a0b7 > old-greenblatt.idefix.net: ICMP6, echo request, seq 27196, length 64
22:50:47.102088 IP6 2001:418:4001:3::c657:b0c5 > old-greenblatt.idefix.net: ICMP6, echo request, seq 50291, length 64
22:50:56.675730 IP6 2001:590:0:2::d8f6:7acf > old-greenblatt.idefix.net: ICMP6, echo request, seq 19017, length 64
22:51:16.323368 IP6 2001:44b8:4020::3ba7:c00d > old-greenblatt.idefix.net: ICMP6, echo request, seq 38769, length 64
22:51:43.154029 IP6 2001:418:2007::c611:f352 > old-greenblatt.idefix.net: ICMP6, echo request, seq 14674, length 64
22:51:47.755011 IP6 2001:559:0:300::6011:9036 > old-greenblatt.idefix.net: ICMP6, echo request, seq 61327, length 64
22:51:48.168141 IP6 2001:559:0:300::6011:9023 > old-greenblatt.idefix.net: ICMP6, echo request, seq 24579, length 64
All source addresses have bits 65-96 set to 0. When I translate those to IPv4 addresses I get valid addresses (duh) which for example in the case of 2001:418:2007::c611:f352 map to the same organisation (NTT America). So I guess some type of dual-stack host is causing this, with all the same software setup. Some kind of global network probe is learning the 2001:888:1011::694 from somewhere.

I don't see this as 'wrong', it's just interesting. Why is something still using this old address.


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2010-11-11 (#) 9 years ago
With all the interesting weather today on the Northsea I added the Northsea area at weather.idefix.net with fresh weather maps every hour.

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2010-11-11 (#) 9 years ago
Interesting weather happening, windspeed Northsea reported at 24 meter/second with 29 meter/second gusts (87 and 105 kilometer per hour).
Update 15:10 EHKV reporting ///42G64KT wind (78 kilometer per hour sustained, 119 kilometer per hour gust). Wind without direction isn't parsed correctly by Geo::METAR so the weather.idefix.net plot for 15:00 CET has no wind for EHKV.
Update Geo::METAR local version updated, /// is 'measurement broken'. But the plotscript still can't draw a windvane for that measurement.
Update 16:20 Last report from EHPG (hiding under the scale on weather.idefix.net): EHPG 111425Z AUTO 20049G64KT 170V270 5000NDV -DZ FEW005/// BKN007/// OVC008/// 10/08 Q0978 49 knots, 64 knots gusts: 91 kilometer per hour sustained, 119 kilometer per hour gust. Windy! EHPG is oil platform P11-B. Maybe I should add a map 'Northsea' to the weather maps.

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2010-11-09 Having a look at DNSSEC braindump 9 years ago
Having a look at DNSSEC, but for now my head explodes. Reading some howtos, getting weird errors and a 'now what?' when the signing is a success.
Read the rest of Having a look at DNSSEC braindump

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2010-11-09 (#) 9 years ago
One of those moments where people get totally confused because something happens which is not 'in the script':

Via Video: Texas Middle School Pulls Off Miraculous Touchdown - Wired playbook


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2010-11-07 (#) 9 years ago
Gisteren even met de ligfiets en de defecte remklauw naar de fietsenmaker geweest, ook om iets te laten doen aan de koppeling voor de kinder-aanhanger.

De fietsenmaker (Wim Kok in Utrecht) was er van overtuigd dat ze met een paar dagen wel de remklauw konden repareren. Ik had echt verwacht dat de optie 'vervangen' zou zijn. Verrassend positief.
Update 2010-11-25: Die 'paar dagen' vielen zwaar tegen, toen ik er dus na twee en een halve week achteraan belde en maar eens langs ging waren ze er achter gekomen dat het niet te repareren zou zijn en of ze een vervangende remklauw moesten bestellen. Ja, dat was mijn originele vraag op 2010-11-06...
Update 2010-12-09: En uiteindelijk was (na erachteraanbellen..) de vervangende remklauw binnen. De Shimano m465 is niet meer leverbaar, de enige compatible mechanische remklauw voor een schijfrem is een Avid BB7 Mtn. Die weer net andere rempads gebruikt, dus zal ik voortaan 2 verschillende setjes op voorraad moeten houden.


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2010-11-07 (#) 9 years ago
Open new mail: 82 spams. Casino spams: 75. All for royalbelie / royalreleasable, which seems to be run from somewhere in Russia.

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2010-11-05 (#) 9 years ago
Mentioning your dayjob on your wikipedia userpage can also be wrong:
I have removed the mention of you being a system administrator (on your user page), as this could give the impression that you are an admin on this project, which you are not. If you mean that you are a sys admin on your own website, please feel free to re-add with the addition of "on my own website" or similar, but not something that other editors on the English Wikipedia may think shows that you are an admin on this project at the moment! Regards, -- PhantomSteve/talk|contribs\ 20:59, 31 October 2010 (UTC)
Strangely enough, the definition for System administrator on that exact same wikipedia I linked to said it correctly:
A system administrator, systems administrator, or sysadmin, is a person employed to maintain and operate a computer system and/or network. System administrators may be members of an information technology (IT) or Electronics and Communication Engineering department.

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2010-11-05 (#) 9 years ago
A new trick to learn to our zabbix monitoring setup at work is a check for SSL certificate lifetime. Something you don't have to check very often but it gives a lot of support effort when you are too late.

Based on Monitoring of SSL certificate expiration time - Zabbix forums I did some work but decided that perl was my weapon of choice. Resulting test script:

Script deleted, there is now a better version in updated the zabbix ssl certificate test script to be able to use starttls services.

Which I would like to run once per week. But zabbix wants to run every test at least once every 12 hours. Ok. The test is simple: start warning when the value drops below 2592000 (one month worth of seconds).

The next trick is to use the zabbix api access to get the list of hosts which are monitored for SSL certificates and publish the result in our internal documentation mediawiki. Still working on that bit: selecting hosts in a group and selecting the templates for each host. I want templates per host, because that will show which SSL port is tested.

That is also my first perl JSON programming. Which is just a lot of use of Data::Dumper to figure out what kind of interesting objects are returned and picking out the details I want.

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2010-11-05 (#) 9 years ago
The xs4all ipv6 tunnel kept having traffic for two reasons:
  • Some external nameserver probes kept remembering the old address for ns2.idefix.net for a good three months after I changed it.
  • One nntp peer did not pick up the move
I noticed this week that the traffic through the tunnel was dying out so I did a tcpdump of the traffic and it was all nntp. I tested whether I could disable that special route yet and that worked.

Finally, all traffic is migrated to native IPv6 and I can start shutting down the tunnel service after 9 years and 2 months.


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2010-11-04 (#) 9 years ago
And I promised the no-bed version too of Dutch language lesson #4. All audio editing and mixing done with audacity.

Audio credits for this version:

Listen to audio attachment:
MP3 media: Dutch language lesson 4 (nobed version) (rightclick, select save-as to download)

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2010-11-03 (#) 9 years ago
My previous remarks about doing audio work and one system reinstalled with audio editing in mind had a good reason: I was working on audio for a podcast. Not my own, but a guest role in "First Life" with a Dutch language lesson. I numbered it number 4 because there may or may not have been 3 earlier lessons used in the Chub Creek podcast.

But after I recorded my stuff I never heard anything about it being actually used. As you can see the First Life podcast is on long hiatus so I guess it isn't working out.

So here is what I recorded. It's available in two versions, one with the music bed and one without as I'm still not too happy about the effect of the music bed.

A music bed is the background music (usually something light drum-like) you hear on the radio when the DJ is talking (or when the DJ takes a breath). US definitions of music bed (and english wikipedia) seem to focus more on use of music in the background of radio commercials.

Audio credits:
Listen to audio attachment:
MP3 media: Dutch language lesson 4 (rightclick, select save-as to download)

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2010-11-03 (#) 9 years ago
Amusing tidbit in my spam e-mail today:
It is my pleasure to contact you after going through your profile on pgp.cs.uu.nl/ on my search for friendship,please contact me on this my  email  address so that i can send you my picture and tell you more about myself.I will be happy to know a little about you and hobbies.
I don't see the page about my pgp key and its place in the pgp strong set being a friendship / dating profile page.

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2010-11-02 (#) 9 years ago
Vanmorgen deed de voorrem van mijn ligfiets ineens raar. Onderweg had ik niet veel tijd om te kijken wat precies want ik was al wat laat voor m'n werk. Maar vanavond de ligfiets opgehangen en de voorrem gedemonteerd en uitgebreid bekeken. Als ik de rem loslaat veert het geheel niet vanzelf terug. Het klinkt van binnen of er een veer in stukgegaan is. Ik kan het huis van dat mechanisme alleen met gespecialiseerd gereedschap openmaken omdat het dichtzit met torx schroefjes, dus ik weet het niet zeker. Maar hiermee wil ik niet verder rijden.

Tijd voor een verse remklauw dus. Aangezien het me al prima gelukt is om deze te demonteren van de fiets ga ik gewoon met de defecte remklauw naar een fietsenmaker 'doe mij een nieuwe van deze' en monteer de nieuwe zelf. Komende paar dagen maar even op de rechtopfiets naar het werk.


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2010-11-02 (#) 9 years ago
Now I use the home workstation jobs more for audio work I also want that data in the backup cycle on a regular basis. But backups happen when I sleep and normally the system is off when not in use.

Solution: kick the workstation awake using wake-on-lan. That is easy when I know the ethernet address for the active network card and set the system up right (which does mean the power use is non-zero).

18 5 * * Mon,Fri /usr/sbin/etherwake -i eth0.1 jobs
Nicely in sync with the backup scheme.

But that does mean the system is running which is not needed after the backup is done. But sometimes I leave it running overnight for some computation task(s). Solution, a script on the workstation which runs when the backup should be done at 07:10, somewhat less than 2 hours after the wake:
#!/bin/sh

# check if I'm awaken for backup, in that case: shutdown when there is no
# amanda process

if [ "`awk ' $1 < 7200 { print "ja" } ' < /proc/uptime`" = "ja" ]; then
        if [ "`pidof amandad`" = "" ]; then
                /sbin/shutdown -h now
        fi
fi
Only when the number of seconds uptime is less than 7200 (2 hours) and there is no amanda daemon left, the system will shutdown. Scheduled backups working, no needless running of the system and when it has been started with other reasons it won't shut down.
The detour via awk is because the -lt option of test doesn't like fractional numbers.

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2010-11-01 (#) 9 years ago
The SIP scanners are adaptive.. less than a week after some very noisy SIP scans I noticed what is either a bit of distribution or a lot of scanners starting:
[2010-10-31 23:12:50] NOTICE[8876] chan_sip.c: Registration from '"3164813366"<sip:3164813366@mm.nn.oo.pp>' failed for '124.181.83.62' - No matching peer found
[2010-10-31 23:12:50] NOTICE[8876] chan_sip.c: Registration from '"3164813366"<sip:3164813366@mm.nn.oo.pp>' failed for '124.181.83.62' - No matching peer found
[2010-10-31 23:12:50] NOTICE[8876] chan_sip.c: Registration from '"3164813366"<sip:3164813366@mm.nn.oo.pp>' failed for '124.181.83.62' - No matching peer found
[2010-10-31 23:12:50] NOTICE[8876] chan_sip.c: Registration from '"3164813366"<sip:3164813366@mm.nn.oo.pp>' failed for '124.181.83.62' - No matching peer found
[2010-10-31 23:12:50] NOTICE[8876] chan_sip.c: Registration from '"3164813366"<sip:3164813366@mm.nn.oo.pp>' failed for '124.181.83.62' - No matching peer found
[2010-10-31 23:12:50] NOTICE[8876] chan_sip.c: Registration from '"3164813366"<sip:3164813366@mm.nn.oo.pp>' failed for '124.181.83.62' - No matching peer found
[2010-10-31 23:12:50] NOTICE[8876] chan_sip.c: Registration from '"3164813366"<sip:3164813366@mm.nn.oo.pp>' failed for '124.181.83.62' - No matching peer found
[2010-10-31 23:12:50] NOTICE[8876] chan_sip.c: Registration from '"3164813366"<sip:3164813366@mm.nn.oo.pp>' failed for '124.181.83.62' - No matching peer found
[2010-10-31 23:12:50] NOTICE[8876] chan_sip.c: Registration from '"3164813366"<sip:3164813366@mm.nn.oo.pp>' failed for '124.181.83.62' - No matching peer found
[2010-10-31 23:12:50] NOTICE[8876] chan_sip.c: Registration from '"3164813366"<sip:3164813366@mm.nn.oo.pp>' failed for '124.181.83.62' - No matching peer found
[2010-10-31 23:12:50] NOTICE[8876] chan_sip.c: Registration from '"3164813366"<sip:3164813366@mm.nn.oo.pp>' failed for '124.181.83.62' - No matching peer found
[2010-10-31 23:53:30] NOTICE[8876] chan_sip.c: Registration from '"2731788806"<sip:2731788806@mm.nn.oo.pp>' failed for '218.206.248.132' - No matching peer found
[2010-10-31 23:53:30] NOTICE[8876] chan_sip.c: Registration from '"1540737811"<sip:1540737811@mm.nn.oo.pp>' failed for '218.206.248.132' - No matching peer found
[2010-10-31 23:53:30] NOTICE[8876] chan_sip.c: Registration from '"100"<sip:100@mm.nn.oo.pp>' failed for '218.206.248.132' - No matching peer found
[2010-10-31 23:53:30] NOTICE[8876] chan_sip.c: Registration from '"101"<sip:101@mm.nn.oo.pp>' failed for '218.206.248.132' - No matching peer found
[2010-10-31 23:53:30] NOTICE[8876] chan_sip.c: Registration from '"102"<sip:102@mm.nn.oo.pp>' failed for '218.206.248.132' - No matching peer found
[2010-10-31 23:53:30] NOTICE[8876] chan_sip.c: Registration from '"103"<sip:103@mm.nn.oo.pp>' failed for '218.206.248.132' - No matching peer found
[2010-10-31 23:53:30] NOTICE[8876] chan_sip.c: Registration from '"104"<sip:104@mm.nn.oo.pp>' failed for '218.206.248.132' - No matching peer found
[2010-10-31 23:53:30] NOTICE[8876] chan_sip.c: Registration from '"105"<sip:105@mm.nn.oo.pp>' failed for '218.206.248.132' - No matching peer found
[2010-11-01 00:12:04] NOTICE[8876] chan_sip.c: Registration from '"3002915279"<sip:3002915279@mm.nn.oo.pp>' failed for '62.224.47.239' - No matching peer found
[2010-11-01 00:25:01] NOTICE[8876] chan_sip.c: Registration from '"1291933398"<sip:1291933398@mm.nn.oo.pp>' failed for '201.240.145.112' - No matching peer found
[2010-11-01 00:51:52] NOTICE[8876] chan_sip.c: Registration from '"3816139978"<sip:3816139978@mm.nn.oo.pp>' failed for '187.14.130.217' - No matching peer found
Funny thing is another asterisk server saw the same patterns at the approximate same time from different IPs.

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2010-11-01 (#) 9 years ago
Albert Heijn Toy Story actie figuren:
  • Woody
  • Jessie
  • Buzz Lightyear
  • Lotso
  • Bullseye
  • RC
  • Hamm
  • Wheezy
  • Rex
  • Ruimtewezen (Squeeze)
  • Chunk
  • Sparks
  • Stretch
  • Sarge
  • Dolly
  • Soldaat
Debian release codenames:
  • buzz
  • rex
  • bo
  • hamm
  • slink
  • potato
  • woody
  • sarge
  • etch
  • lenny
  • squeeze
  • sid
Mijn conclusies: er zitten debian-gebruikers bij Albert Heijn. En als je alle figuurtjes bij elkaar hebt heb je net niet alle gebruikte namen voor Debian releases (Bo, Slink, Etch en Sid ontbreken dan).

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