Niels K.

Tue, 14 Jul 2026 17:03:15 +0200

I feel him… #catsofmastodon

Sat, 11 Jul 2026 13:43:38 +0200

Charging up some classics… #retrogaming #handheld

Sat, 11 Jul 2026 13:13:43 +0200

Because of the trip to Japan that is coming up we need to do stuff on lots of Japanese web pages. I am surprised how good I can still read. I am not necessarily understand it, but my kanji reading ability is far better than I expected. #japanese

Sat, 11 Jul 2026 12:17:35 +0200

That was kinda warm today…but it was fun to run again in a group. We were more than usual :) #running

Fri, 10 Jul 2026 03:45:26 +0200

Ghibli Museum in Tokyo has the worst ticket buying experience ever. We used 4 devices to get into queue. The numbers are random. One got a number below 1000 and with that we could acquire tickets. We needed like 20 tries to get to the payment page, then multiple tries to pay. But we did it!

Tue, 07 Jul 2026 21:24:13 +0200

Season 2 of Silo is a bit sluggish…

Sun, 05 Jul 2026 11:37:37 +0200

That vacation in Japan that is coming up will cross off a lot of things from my bucket list 🤩

Sat, 04 Jul 2026 07:46:16 +0200

Ich habe jetzt die Domain rpg-nielsk.de (die ML meiner Rollenspielgruppe, die jetzt seit fast 30 Jahre besteht, wurde irgendwann mal rp-nielsk getauft…aber das “g” fand ich in der Domain besser).

Was mach ich jetzt damit? #ttrpg

Sat, 04 Jul 2026 07:41:16 +0200

I am reading “Apple: The first 50 years”. I knew that they innovated a lot, but not that much. I hope they move a bit in another direction though with their new CEO.

Even though Steve Jobs was against open systems.

NFS-problems I didn’t expect at all

Fri, 03 Jul 2026 22:19:36 +0200

Stories from the engine room: I have a big configuration file which is part of a mail-setup and it is read on each mail delivery (MTA is exim and it is the file that contains all the domains the servers are responsible for). It lives in NFS and several servers use it.

Two days ago I migrated that part of the NFS to a new NFS-setup that works differently than the old one. And because it is already in production I cannot change a lot in terms of NFS-server configuration. The rest works now fine for months.

When I mounted the two small exports via the new storage I had problems with certain scripts because they use flock. Those scripts just hang. The big storage that runs for months now is using nolockd, so that part never came up. Since I couldn’t really configure the stuff for locks correctly because it would need a restart of the nfs-server, I switched to NFSv4.2 (the old one uses v3; the big storage part as well) because file locking works there differently. The scripts worked and everything was great.

Yesterday suddenly the problem came up that the mail platform misbehaved. Huge numbers of newsletters and spam came in and everything went down to a crawl. I tried around and after implementing greylisting especially for mails from googleusercontent, things recovered.

Today the problem came back and even harder. When I hit ctrl+t (FreeBSD - sends SIGINFO) on a hanging mail delivery I saw that it hang with [nfs]. But the NFS-servers were fine, no saturation, no massive IOPs, they were basically bored. So I attached truss to a hanging process and it hang when it ran the big configuration file from the beginning. I changed it now that configuration file is locally on each server and gets copied over via a cronjob if it changes. And suddenly all the problems went away.

I have been rarely so happy to solve a problem. That thing was a beast and it had such a massive production impact. I have no idea how I should have figured that out before.

Especially since I was focused only on the big storage parts and not the small ones which are barely noticeable. That was probably the last hurdle to bring the project to the finish line.

I already had to migrate an LDAP as part of that project which didn’t perform in the new setup and the problem were too restrictive file limits in the new Linux-setup in contrast to the old FreeBSD-setup.

Now I just have to migrate a couple of Terabyte of mailboxes (around three quarters are already migrated) and then I can clear servers which take up roughly 24 rack units (spread over several racks) and some ancient cabling. This project took ages…

Mon, 29 Jun 2026 13:35:54 +0200

Ich kann mit dem Großteil deutscher Comdey irgendwie nichts anfangen. Mir wurde am Wochenende die Show von Carolin Kebekus (Shesus) wärmstens empfohlen. Und ich muss Augen, dass ich die zu sehr großen Teilen einfach unlustig finde. 😕

Sun, 28 Jun 2026 11:00:36 +0200

Ich hab hier ein Zimmer in dem ist es schön kühl - laut Thermometer sind es trotzdem 27 Grad…

Sat, 27 Jun 2026 17:11:07 +0200

Eine Station mit der S-Bahn: alle aussteigen. Eine weitere Station und am Bahnhof. RE hat 30 Minuten Verspätung. Fährt eine Station: alle aussteigen.

Ich habe noch eine Station RE und 3 Stationen S-Bahn vor mir. Ich bin gespannt…

Sat, 27 Jun 2026 16:36:17 +0200

Die Deutsche Bahn warnt davor, dass man wegen des Extremwetters nur absolut notwendige Fahrten mit den öffentlichen Verkehrsmitteln oder den Regios machen soll…

Es ist alles einfach nur spät und kaputt. Gnah. 😩

Fri, 26 Jun 2026 18:47:32 +0200

Today I will try Syrinscape in my monthly DnD-session. I wonder how it works out. #ttrpg

Wed, 24 Jun 2026 19:37:17 +0200

Im Laufladen und bei Decathlon finde ich keine Ciele GOCaps. Aber bei Globetrotter???

Wie auch immer, ich hab jetzt endlich eine zweite 🤩 #running

Sun, 21 Jun 2026 14:04:36 +0200

Und jetzt die #jugendhackt-Abschluss Präsentation ansehen (jugendhackt.org/live )

Sun, 21 Jun 2026 08:39:03 +0200

Why should I identify myself to a social network with my id card? And I bet if it would be interesting enough we would see bots/sock puppets/fake accounts with right propaganda anyways. One of the CEOs is a Web3-dude. Another one has „NATO & military systems expertise“. Yeah…right… #wsocial

Sat, 20 Jun 2026 23:38:16 +0200

There should be a second season of #Cyberpunk Edgerunners that plays in the age of Red and is based around a group of nomads. That would be neat.

Sat, 20 Jun 2026 23:34:16 +0200

I am finally watching #Cyberpunk Edgerunners. The series is excellent. Now I want to play Cyberpunk Red and 2077. But no time for it and as long as the kids are awake I cannot play 2077. usually my kids stay longer up than I do these days 😩

Sat, 20 Jun 2026 20:49:10 +0200

Saucony BLN10K survived. It was hot and short before the race it rained, so it was quite humid. It was brutal. In the first lap I hit suddenly a heat wall and the first supply station had only cups with a sip of water. After the race they ran out of the alcohol-free beer really fast #running

Wed, 17 Jun 2026 16:11:23 +0200

Migrated #OpenLDAP 2.4 running on #FreeBSD to OpenLDAP 2.6 with lloadd on #Linux (Debian 13). So many problems since then. Today I identified an open file limit issue. Fixing that will hopefully finally solve those problems 😞

Mon, 15 Jun 2026 05:45:01 +0200

Ich mag nicht aufstehen…aber irgendwer muss ja den Kaffee kochen…

Sun, 14 Jun 2026 21:37:36 +0200

According to “Apple: The first 50 years” by David Pogue, Big Brother in the 1984 ad didn’t mean IBM but represented the control of technology by the few. How ironic looking at Apple’s role today.

Sun, 14 Jun 2026 08:56:23 +0200

So many things in #Japan need a reservation. We found now something which had open spots but for the reservation we had to enter a working phone number. The number of allowed digits is too short for international phone numbers though 🤦‍♂️