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Limiting Systemd Journal Size: Preventing Log File Bloat

ByPieter Bakker

Introduction System logs are crucial for debugging, monitoring, and understanding your Linux system’s behavior. However, unchecked journal growth can quickly consume valuable disk space, potentially impacting system performance and available storage. This guide provides a practical approach to managing systemd journal sizes across Debian and other systemd-based Linux distributions. Understanding Systemd Journals Systemd journals collect…

Enable Keepalive in Nginx Reverse Proxy

ByPieter Bakker

In the Nginx Reverse Proxy context, keepalive connections are a critical performance optimization technique that allows multiple HTTP requests to be transmitted over a single TCP connection, dramatically reducing connection overhead and improving overall system performance. The Performance Challenge Traditional HTTP connections require a complete handshake for each request: This process introduces significant latency and…

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Running Docker in Incus Containers

ByPieter Bakker

This guide demonstrates how to properly set up and run Docker inside an Incus container on Debian 12. It builds upon our previous article “Installing Incus on Debian 12 with ZFS Storage” and focuses on the secure deployment of Docker in a containerized environment. Prerequisites Security Considerations Running containers within containers (nesting) requires specific security…

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Installing Debian 12 on PC Engines ALIX

ByPieter Bakker

This guide provides detailed instructions for installing Debian 12 (Bookworm) on PC Engines ALIX system boards with comprehensive write protection mechanisms. While tested on the ALIX.2d13, these instructions should work for other ALIX models as well. Hardware Requirements Prerequisites Before starting the installation, ensure you have: 1. BIOS Configuration 2. Environment Setup First, set up…

Using mutt to Send HTML Emails with Attachments

ByPieter Bakker

Basic Command Usage The basic mutt command for sending HTML emails with attachments follows this pattern: Let’s break down each component: Script Implementation Here’s a general implementation that can be used for any backup or sync operation: Usage Example Here’s how you might use this in practice: Tips This template can be adapted for any…

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Protect Your Incus Server with NFtables

ByPieter Bakker

This guide will walk you through the process of implementing a secure firewall configuration for your Incus server using nftables. We’ll use a modular approach by splitting rules into logical units, making the configuration easier to maintain and modify. Prerequisites 1. Understanding the Modular Configuration Approach Before we begin, let’s understand the structure we’ll be…