DEV Community: Alan Bonnici

Does your Linux server actually know when the power is failing?

Alan Bonnici — Thu, 19 Mar 2026 11:39:08 +0000

NUT (Network UPS Tools) is the go-to open-source solution for UPS monitoring on Linux — but it takes some know-how to set up properly, especially with hardware that isn't auto-detected out of the box.

This detailed guide covers everything from finding the right driver, dealing with stubborn read-only settings, configuring automatic shutdowns, and setting up email alerts so you know when things go wrong. There's even a section on how to safely test your shutdown logic before a real power cut hits.

Great resource for anyone running a homelab or Linux-based home server. 👇

https://www.alanbonnici.com/2026/03/setting-up-nut-ups-software-on-linux.html

How to configure Postfix to relay mail through Gmail (simple step-by-step guide)

Alan Bonnici — Tue, 17 Mar 2026 10:31:07 +0000

If you run Linux servers that need to send alerts, backup reports, or monitoring notifications, configuring SMTP can be a pain.

I wrote a short guide explaining how to install and configure Postfix with Gmail as an SMTP relay, including:

• Installing required packages

• Configuring TLS

• Setting up Gmail app passwords

• Securing credentials

• Testing email delivery

Good for small servers, homelabs, monitoring tools, and UPS notifications.

https://www.alanbonnici.com/2026/03/install-and-configure-postfix-using.html

Building a Production RAG Server with Ollama, Open WebUI and Chroma DB

Alan Bonnici — Wed, 11 Feb 2026 08:48:39 +0000

I've created a comprehensive guide on building a headless LLM server with RAG capabilities. The tutorial walks through the complete implementation including document ingestion, vector storage, and query optimization.

The setup is production-ready and can be completed in about 30 minutes.

There are optional code sections for those who would like to interact with the model programmatically.

MS PowerApps Wordle Engine HowTo

Alan Bonnici — Wed, 29 Jan 2025 14:05:24 +0000

In this HowTo, I dive into creating a Microsoft Power Apps Canvas Wordle app that checks a guessed word against an answer!

🔍 Features include:

✅ Duplicate detection

✅ Suggestions for improvement

✅ Tips for enhancing Power Apps to bridge the gap between no-code/low-code and procedural approaches!

https://youtu.be/-cz_lun6fo0?si=COXVB5vb2rXboyka