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Configuring NAT64 and DNS64 on Linux with Tayga and BIND9: Connecting IPv6-Only Servers to Legacy IPv4 Services

By admin July 8, 2026

A hands-on guide to configuring NAT64 with Tayga and DNS64 with BIND9 on Linux, enabling IPv6-only servers to connect to legacy IPv4-only services without extra IPv4 addresses or application code changes. Based on six months of real production experience.

MySQL

Secure phpMyAdmin Installation on Linux: Authentication, IP Restrictions, and Nginx Reverse Proxy

By admin July 8, 2026

A practical guide to installing and securing phpMyAdmin on Linux: combining HTTP Basic Auth, IP whitelisting, and deployment behind an Nginx Reverse Proxy. Includes fail2ban and rate limiting configuration to prevent brute-force attacks.

Linux

Writing udev Rules on Linux: Fixed Network Interface Names and Auto-triggering Scripts on USB Plug-in

By admin July 8, 2026

udev rules give you control over how Linux names hardware devices — from network interfaces to USB serial ports. This guide covers writing practical rules to assign fixed interface names by MAC address, create persistent symlinks for USB devices, and auto-run scripts when a device is plugged in.

Linux

A Practical Guide to jq on Linux: Filtering and Processing JSON from APIs in the Terminal

By admin July 8, 2026

When you're debugging production at 2 AM staring at an unreadable wall of JSON in your logs, jq saves you more time than any other approach. This guide compares jq against grep and Python for handling JSON in the terminal, covering everything from basic syntax to filtering Docker containers and Kubernetes API responses in practice.

Git

tig Guide: A Visual Terminal UI for Git to Browse Commits, Stage Line by Line, and Fix Merge Conflicts

By admin July 7, 2026

tig is a Terminal UI for Git that lets you browse commit history, stage individual lines of changes, and resolve merge conflicts visually — all without leaving the terminal. A guide to installation, essential keyboard shortcuts, and a practical workflow for integrating tig into your daily development routine.

Linux

Expert Tricks for Using sysstat to Diagnose a Slow Linux Server

By admin July 7, 2026

Don't let your Linux server run slow without knowing why. Learn how to use iostat, vmstat, sar, and mpstat to track down performance bottlenecks and troubleshoot incidents like a pro.

Virtualization

How to Install and Use Lima on macOS: Create Lightweight Linux VMs with QEMU and VZ Framework as a Free Docker Desktop Alternative

By admin July 6, 2026

Lima is an open-source tool for creating Linux virtual machines on macOS using QEMU or Apple's VZ Framework, replacing Docker Desktop completely for free. This article compares available solutions, walks through Lima installation, Docker integration, and managing multiple VMs from the command line.

Network

Mastering Mosquitto MQTT Broker on Linux: From Installation to Real-World Operation

By admin July 5, 2026

A comprehensive guide to installing Mosquitto MQTT Broker on Linux. Practical tips for security configuration, performance optimization, and troubleshooting IoT connection issues.

Centos

Installing MySQL 8 on CentOS Stream 9: Official Repository, SELinux, and Performance Tuning

By admin July 3, 2026

Guide to installing MySQL 8 on CentOS Stream 9 from the official repository — avoiding the common pitfall of getting MariaDB instead. Covers SELinux configuration, firewalld access control, and InnoDB buffer pool tuning for production servers.

Docker

Docker Checkpoint and Restore with CRIU: Live Container Migration Without Service Downtime

By admin July 3, 2026

CRIU (Checkpoint/Restore In Userspace) lets you freeze the complete state of a running Docker container and restore it on another server without losing any in-memory state. This guide walks through setting up and using Docker Checkpoint with CRIU for zero-downtime container migration, with practical tips from real-world experience.