Claudio Kuenzler's Avatar

Claudio Kuenzler

@napsty

Geek, Linux and Open Source Systems Engineer. Father of two forks. Mostly tech-blogging. πŸ‡¨πŸ‡­πŸ‘¨β€πŸ‘©β€πŸ‘§β€πŸ‘¦πŸ‡ΈπŸ‡ͺ

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30.10.2023
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Latest posts by Claudio Kuenzler @napsty

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#sunset

08.03.2026 17:00 πŸ‘ 2 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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Wordpress, Elementor and the mysterious server error (500 error) The WordPress website builder Elementor ran into mysterious server errors (500 error) when trying to update a site.

When @elemntor.bsky.social all of a sudden runs into a mysterious internal server error (error 500) while trying to publish site changes to @wordpress.org . πŸ•΅οΈβ€β™‚οΈ
www.claudiokuenzler.com/blog/1524/wo...

06.03.2026 16:48 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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How to handle dd running into input/output errors reading a CD or DVD When dd runs into i/o errors reading an optical drive (CD or DVD), ddrescue is a great helper to get that backup copy done!

While attempting to digitize a #DVD collection, I ran into I/O errors trying to read the DVD with dd on my #Linux workstation.
Luckily there's the #opensource ddrescue command, which is able to continue creating a proper ISO file.
www.geekersdigest.com/how-to-handl...

28.02.2026 11:17 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Woooow! Now THIS! #sunset

24.02.2026 17:06 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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#sunset

24.02.2026 16:51 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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Updating OpenWRT firmware (or reboot?) worked wonders for packet loss issues An OpenWRT router showed significant packet losses on the internal LAN. Time to update and reboot the device.

An #OpenWRT router showed significant packet losses on the internal LAN.
Here's how to update the firmware and keep configurations (using auc command).
www.claudiokuenzler.com/blog/1523/up...

20.02.2026 12:00 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

In Berlin-Dahlem gab es diesen Winter bisher 22 Eistage.

Das sind die meisten Eistage seit dem Winter 2012/2013. Damals 29 Eistage.

Der Jahrhundertwinter 1962/1963 hatte 60 Eistage.

Ein Eistag ist ein Tag, an dem die Temperatur nicht auf 0Β°C oder darΓΌber steigt. /FR

18.02.2026 11:13 πŸ‘ 89 πŸ” 13 πŸ’¬ 1 πŸ“Œ 1
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SSH service reload not working in Debian 13 - fatal: Cannot bind any address In Debian 13 (Trixie), a service reload of the SSH service runs into an error and service fails.

On a @debian.bsky.social 13 machine, I stumbled on a curious error, when an #Ansible task tried to reload the #SSH service.
As I could not reproduce this reload problem on previous #Debian releases, this was reported as a (likely?) bug.
www.claudiokuenzler.com/blog/1522/de...

18.02.2026 12:38 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Using functions in Service Apply rule to monitor Icinga 2 zones connectivity Infiniroot provides managed dedicated Linux servers, virtual infrastructure solutions and consulting in open source systems

How to auto-generate @icinga.com cluster-zone checks using a Service Apply rule with #Icinga functions. Practical use case to to ensure #monitoring of zone connectivity.
www.infiniroot.com/blog/1521/us...

15.02.2026 15:35 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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New version of onitoring plugin check_zpools detects and alerts when spare drives in use The check_zpools monitoring plugin now detects and alerts when a spare drive is in use in a ZFS Pool.

A new version of check_zpools, an #opensource #monitoring plugin for ZFS Pools, is available.
The latest release comes with an important enhancement. The check is now capable of detecting and alerting when a spare drive is in use in a #ZFS Pool.
www.claudiokuenzler.com/blog/1520/mo...

13.02.2026 16:34 πŸ‘ 3 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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a man wearing glasses and a black shirt has a star on his shirt ALT: a man wearing glasses and a black shirt has a star on his shirt
12.02.2026 18:18 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Attack the camera!

11.02.2026 15:06 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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How to fix "listen http2 directive is deprecated" after Nginx upgrade - Geeker's Digest After upgrading Nginx to 1.25 or newer, you might run into deprecation warnings, pointing you to the listen and http2 directives.

When you upgrade #Nginx to version 1.25 or newer you might run into deprecation warnings:
"listen ... http2" directive is deprecated, use the "http2" directive instead
The latest #tutorial on Geeker's Digest describes how to quickly fix the deprecation warnings.
www.geekersdigest.com/how-to-fix-l...

11.02.2026 10:57 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

... Just one more side project 🀣

07.02.2026 06:44 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I'm not sure... 🀣

06.02.2026 19:54 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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How to install OpenClaw AI Agent on Debian Linux - Geeker's Digest In this tutorial we show how to install OpenClaw AI Agent on a dedicated Debian Linux machine and solve some gotchas.

There's this hype about #OpenClaw. The #AI bot, that claims to actually do things for you and becomes your assistant.
The latest #tutorial on Geeker's Digest describes the initial setup on a Debian machine and also shows common pitfalls and how to resolve them.
www.geekersdigest.com/how-to-insta...

06.02.2026 15:05 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
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MySQL (client) commands in shell scripts fail with ERROR 2026 (HY000): TLS/SSL error: SSL is required After a Debian distribution upgrade, Shell scripts using the mysql command stopped working. An error related to TLS/SSL requirement shows up instead.

After a #Debian machine was upgraded from 12 to 13, I first thought everything went smoothly. No hiccups during the upgrade, no broken configurations. Smooth as butter. πŸ§‘β€πŸ³But to my big surprise, Shell scripts using the #mysql command, stopped working.
www.claudiokuenzler.com/blog/1519/my...

22.01.2026 12:21 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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How to fix APT error public key is not available (NO PUBKEY) - Geeker's Digest The error NO PUBKEY is shown in APT, when the package signing key was exchanged on the repository side. We show you how to fix this error.

If you get a "NO PUBKEY" error from your APT package manager on your @debian.bsky.social or #Ubuntu machine, this most likely means there have been some changes on the repository (server) side.
This #tutorial shows how to fix the error.
- via Geeker's Digest
www.geekersdigest.com/how-to-fix-a...

10.01.2026 07:48 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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The last evening of 2025 is a real beauty!

31.12.2025 16:22 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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check_smart 6.17.0 fixes ATA error count and adds areca raid support for multi-device check The newest release, 6.17.0, contains a fix and an enhancement from two individual open source contributors.

A new version of check_smart, a #monitoring plugin to monitor physical hard drives (HDD), solid state drives (SSD) and NVMe drives, is available.

The newest release, 6.17.0, contains a fix and an enhancement from two individual #opensource contributors.

www.claudiokuenzler.com/blog/1517/ch...

15.12.2025 19:16 πŸ‘ 3 πŸ” 1 πŸ’¬ 0 πŸ“Œ 0
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Dick Van Dyke Plays Not My Job The veteran entertainer plays a game called "Dick van Dyke, meet Dick, van and dyke." Β Dick. Van. Dyke. Together, it's an iconic name in entertainment, but separated into its component words, it's a t...

(2/2) First among them: Dick Van Dyke, who when he joined us 15 years ago was not only as delightful, kind and funny in person as he was on screen, he also β€” for the first time ever in public! β€” performed the lyrics to the β€œDick Van Dyke Show” theme. Happy 100th, DVD!

www.npr.org/2010/10/23/1...

13.12.2025 17:48 πŸ‘ 349 πŸ” 23 πŸ’¬ 12 πŸ“Œ 1
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a man in a black vest is pointing at something . ALT: a man in a black vest is pointing at something .

Hey kid...

13.12.2025 19:33 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Nginx error after Debian distribution upgrade: unknown directive rewrite_by_lua_block During a distribution upgrade from Debian 11 to 12, the Nginx LUA module got removed and caused a configuration error in Nginx.

Common #Debian distribution upgrade, with #Nginx installed on it. What could go wrong? πŸ˜…
A previously installed and now missing module (lua) breaking the config. πŸ™„
www.claudiokuenzler.com/blog/1516/ng...

11.12.2025 10:03 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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How to renew Grafana APT repository key - Geeker's Digest If the local APT repository key is expired, you get an error EXPKEYSIG. Here's how to renew the GPG key from the Grafana repositories.

You just wanted to refresh the APT repositories on your #Debian or #Ubuntu (-based) Linux distribution - but ran into an EXPKEYSIG error?

Geeker's Digest shows how to fix this error with an example of the @grafana.bsky.social repositories.
www.geekersdigest.com/how-to-renew...

10.12.2025 06:15 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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Mistral 3 : la France dΓ©fie GPT-5 avec une licence Apache 2.0 et des modΓ¨les pour l’Edge Un article signΓ© GOODTECH.info C’est une rΓ©ponse cinglante aux modΓ¨les fermΓ©s de la Silicon Valley et un pied de nez Γ  la Chine. Ce mardi 3 dΓ©cembre, la licorne franΓ§aise Mistral AI a dΓ©voilΓ© sa nouvelle gΓ©nΓ©ration de modΓ¨les : la famille Mistral 3. […] L’article Mistral 3 : la France dΓ©fie GPT-5 avec une licence Apache 2.0 et des modΓ¨les pour l’Edge est apparu en premier sur Goodtech.

I'm truly surprised this hasn't made bigger waves or maybe my French is too poor and I misjudged the importance of this.

https://goodtech.info/mistral-3-ministral-3-large-apache-2-0-ia-open-source/

06.12.2025 12:20 πŸ‘ 3 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0
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Cloudflare is down... again! - Geeker's Digest This is a developing story Cloudflare has run into another global outage, leading to many websites going offline and showing an internal error (HTTP 500). This error is caused by Cloudflare and not fr...

#Cloudflare is down. Again.
www.geekersdigest.com/cloudflare-i...

05.12.2025 09:20 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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How to clean up sticky "soft touch" surface on computer chassis - Geeker's Digest After several years in use, the BitFenix computer chassis surface became very sticky. The SoftTouch surface became ugly and needed cleaning.

Fell for the words "black", "matte" and "luxurious".
Years later, all what's left is a sticky mess of a surface, collecting dust like crazy and can't be cleaned.
- via Geeker's Digest
www.geekersdigest.com/how-to-clean...

03.12.2025 14:49 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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How to install Kdenlive requirements for speech to text feature - Geeker's Digest In order to use the very cool "speech to text" feature in Kdenlive, you first need to install some required Python modules. Here's how.

The #opensource video editor @kdenlive.bsky.social has a nice feature: Speech to Text.

Speech to Text automatically recognizes speech from the audio track and adds sub-titles to your video.

In our #tutorial we show how to install the Python requirements.
www.geekersdigest.com/how-to-insta...

24.11.2025 16:21 πŸ‘ 3 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
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There is an extended version of it

20.11.2025 23:00 πŸ‘ 150 πŸ” 52 πŸ’¬ 7 πŸ“Œ 6
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How to fix SSH error "Too many authentication failures" - Geeker's Digest When you try to connect to a remote server using SSH, you might run into the ominous "Too many authentication failures" error. In this article we describe where this error (most likely) comes from and...

"Too many authentication failures".

You might have seen this error when you attempted to connect to a server.

But you could have sworn that your #SSH connection worked in the past - now you get this error.

Here's (the likely) reason and how to fix it. ⬇️

www.geekersdigest.com/how-to-fix-s...

20.11.2025 13:16 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0