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Raspberry Pi 3B+ netboot

November 04, 2021 - 1241 words - 7 mins
It is not a secret that the most fragile part of a raspberry pi setup is the SD card. I had a RPi with docker setup and used netboot, but had an SD card for /var/lib/docker1. Of course this went wrong at some point; the machine did not boot anymore. So naturally I was wondering: Is it possible to r… read more

Home tech stack

November 02, 2021 - 1214 words - 7 mins
I have tried UML, Vserver, openvz, lxc and now docker-compose. After using k8s at work, I tried canonical kubernetes to get some more experience with running it. At that time it was complicated to setup and it was using a lot of resources even when nothing was running. Maybe I didn't configure it pr… read more

Single or multiple USB power sources

April 06, 2021 - 829 words - 5 mins
The other day I was thinking about power consumption of different low power devices, since many small devices may add up to some significant energy usage, sometimes known as Vampire power. I was asking myself: if you have multiple USB powered devices, each with their own power supply, would they dr… read more