Running Raspberry Pi OS inside QEMU is a convenient way to test configurations or perform lightweight development without real hardware. However, the process can appear stalled during boot, especially when emulating ARM on x86_64. Here’s a step-by-step guide based on what worked for me when running Raspberry Pi OS under QEMU on an Ubuntu 24 system inside Hyper-V.

When you want to integrate data outlets neatly into a trunking system, the combination of Kopos ducts and ABB Zoni components offers a professional and visually clean solution. This guide explains how to mount an RJ45 outlet into a 110 mm Kopos cable duct using specific parts from K&V Elektro and provides practical installation tips.

Maintaining the reliability of critical services often requires continuous monitoring of their health and automatic recovery in case of failures. While Kubernetes offers built-in liveness and readiness probes for containerized applications, Linux system administrators can implement similar health checks and automated restarts for services managed by systemd. This article explores practical ways to perform health monitoring using systemd, focusing on DNS availability checks as an example, and how to configure systemd to automatically restart services that become unhealthy.

Running BuildKit in rootless mode increases your security and flexibility when building container images, especially on multi-user systems or CI environments where root privileges are restricted. This method uses a dedicated user and systemd service for isolation and automation, ensuring clean operation without elevated permissions. Docker is installed to provide a familiar runtime for container operations, while RootlessKit bridges the gap needed for rootless containerization.

This tutorial guides through installing Sonatype Nexus Community Edition on Ubuntu with PostgreSQL, configuring permissions, setting up reverse proxy with Nginx, and optimizing Nexus settings.

If you use KeePass to manage your passwords, you can securely automate database unlocking at boot or login using the {PASSWORD_ENC} placeholder. This guide combines best practices, official documentation, and user insights, and now also explains how to set up your script to run automatically from the Windows Startup folder. Additionally, it details how KeePass’s Auto-Type feature works, including window title matching for automatic credential filling.

Nagios can remotely monitor a Proxmox server by running custom scripts via the NRPE agent. For backups, the goal is to calculate the total size of files in the backup directory modified in the last 7 days and alert if the backup size falls below or exceeds desired thresholds.

Keeping your VPN connections robust is essential, especially when using WireGuard tunnels for remote access, site-to-site links, or secure communications. Like many network admins, I’ve faced the frustration of a WireGuard tunnel dropping—often at the least convenient moment. Performing a manual restart on the MikroTik each time is time-consuming and error-prone. This article walks you through a fully automated solution: continuously check the connection from a Linux server and, if needed, remotely restart the MikroTik WireGuard server—using secure workflows and best practices.

As someone who regularly experiments with homelab setups, I wanted to expand my storage by attaching a 2TB SATA drive in an externally powered AXAGON USB 3.0 enclosure to my Odroid H4 Ultra Pro (an x86 mini-PC), running Proxmox VE. On paper, with external power and a quality enclosure, I expected flawless operation—however, I encountered a range of classic USB storage issues. Here’s my real-world troubleshooting journey and the persistent solutions I adopted.

Monica CRM is a privacy-focused personal relationship manager. Successfully configuring outbound email is essential for notifications and automations. One of the most common issues for new users is encountering errors related to SSL or STARTTLS when setting up SMTP delivery. This guide provides step-by-step instructions, optimal configuration examples using environment variables, and explanations to help ensure your Monica CRM deployment sends emails reliably.