Linux

Short tip: Rootless Podman + docker-compose under Fedora

Sep 29, 2022 · 2 min read · docker fedora podman kurztipp ·

Since 2018, there has been a very elegant and lean container runtime, Podman, as an alternative to Docker. Podman offers a smaller attack surface due to omitted background services and is also often pre-installed on Red Hat-like operating systems. With a few tricks, existing docker-compose configurations can still be …
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Short tip: brltty interferes with esptool.py under Pop!_OS

Aug 28, 2022 · 2 min read · esp8266 kurztipp popos ·

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When using ESPHome or esptool.py under Pop!_OS 22.04 I recently encountered the problem that development boards (ESP8266, ESP32) could not be flashed:

 1$ esphome upload hurrdurr.yml
 2INFO Reading configuration hurrdurr.yml...
 3esptool.py v3.3.1
 4Serial port /dev/ttyUSB0
 5Connecting....
 6Chip is ESP8266EX
 7 …

FrOSCon 2022 - back to normal?

Aug 24, 2022 · 1 min read · conference ·

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Last weekend on 20/21.08.2022 it was finally time - the 17th FrOSCon conference in presence took place. After two years of pandemic online events, lectures and workshops took place again at the Bonn-Rhein-Sieg University of Applied Sciences in Sankt Augustin. Exhibitor booths and the obligatory social event on Saturday …
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Deploy Gitea Podman container unattended via Ansible

Mar 29, 2022 · 3 min read · docker gitea podman ·

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Gitea is a popular, lightweight Git frontend that can also be deployed quickly thanks to the Docker image . However, after the container is started, the initial configuration (network options, permissions, database) is done via web interface by default. This is unattractive if you want an unattended and automated …
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Node-RED Flow backups using Git

Feb 9, 2022 · 2 min read · node-red ·

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Node-RED is particularly popular in home automation. For example, the free framework can be used to playfully create processes ("turn on light") that react dynamically to events ("if it's evening") - and that with low-code. The logic clicked together via drag & drop can then be exported via …
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Short tip: Partial Commits with VSCode

Jan 25, 2022 · 1 min read · kurztipp ·

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One of the most important Git best practices is to write commits as atomic as possible - that is, to submit as few changes as possible, but as many as necessary. The advantage is obvious: commits can be reverted individually using git revert. If you mix bug fixes and new features wildly in one commit, you will undo …
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Short tip: Nextcloud + 2FA + CalDAV and CardDAV under iOS

Jan 22, 2022 · 1 min read · nextcloud kurztipp ·

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While setting up my Nextcloud calendar on an iOS device the other day, I encountered the following error:

1CalDAV account verification failed

The error also affected contacts via CardDav - the usual troubleshooting options failed:

Password reset
Using another device
Use different URL and port combinations

Finally, I …

Linux year in review 2021 - my highlights

Dec 22, 2021 · 9 min read ·

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As the year draws to a close, there has once again been a lot going on in the Linux world. In the recently published episode of the FOCUS ON:DevOps podcast, we spent two whole hours discussing all the news in detail.

Time to take a slightly deeper look at my personal top 5.

Probably the biggest highlight for most …

AppImage, Flatpak und Snap in comparison

Dec 1, 2021 · 8 min read · appimage flatpak snap ·

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For installating software, Linux has always offered various possibilities. For example, there is always the possibility of manual compilation using the well-known rule of three (configure, make, make install) - including all the advantages and disadvantages. However, the most convenient solution is using the …
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30 years Linux - my personal retrospect

Aug 25, 2021 · 10 min read ·

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30 years ago today, a Finnish student presented a project in the then still very prominent Usenet. It was Linus Torvalds and the talk was about a small UNIX-like operating system which ran mainly on cheap 386/486 AT clones. Linus was interested in UNIX, but like most students and hobbyists at the time, could not afford …
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