SSH key authentication is far more secure than passwords. This guide covers generating an Ed25519 key pair and deploying it on Ubuntu 24.04 LTS. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server with SSH running A user account on the server An SSH client on your local machine (Linux/macOS/Windows) Step 1 […]
OpenLiteSpeed is the open-source version of LiteSpeed Web Server — a high-performance, event-driven server with a built-in WebAdmin GUI. It handles PHP natively via LiteSpeed SAPI, which is significantly faster than PHP-FPM. This guide installs it on Ubuntu 24.04 LTS. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server A user with […]
Swap space extends the effective memory of a Linux server by using disk space as overflow memory. While not a substitute for RAM, it prevents out-of-memory crashes on servers that occasionally spike in memory usage. This guide creates and configures a swap file on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites […]
Fail2Ban monitors log files and automatically bans IP addresses showing brute-force patterns. This guide installs and configures Fail2Ban on Ubuntu 24.04 LTS to protect SSH and other services. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server A user with sudo privileges UFW or iptables installed and active Step 1 – Install […]
Knowing how your server uses CPU, memory, disk, and network resources is essential for capacity planning and troubleshooting. Ubuntu 26.04 LTS comes with several built-in tools and supports popular third-party monitors. This guide covers the most useful commands and tools for resource monitoring. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS server […]
The hostname identifies your server on a network and appears in shell prompts, log files, and monitoring dashboards. Ubuntu 24.04 LTS uses hostnamectl to view and change it persistently. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server A user with sudo privileges Step 1 – Check the Current Hostname Display the […]
Accurate system time is critical for SSL certificates, logs, cron jobs, and distributed systems. Ubuntu 24.04 LTS uses systemd-timesyncd as the default NTP client. This guide shows you how to configure and verify time synchronisation. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server A user with sudo privileges Internet connectivity Step […]
unattended-upgrades automatically downloads and installs security updates so your Ubuntu 24.04 LTS server stays protected without manual intervention. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server A user with sudo privileges An email address for notifications (optional) Step 1 – Install unattended-upgrades Install or confirm the package is present: sudo apt […]
Swap space extends the effective memory of a Linux server by using disk space as overflow RAM. This guide creates and configures a swap file on Ubuntu 24.04 LTS. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server A user with sudo privileges Sufficient free disk space (at least 1–2 GB) Step […]
Knowing how your server uses CPU, memory, disk, and network is essential for capacity planning and troubleshooting. This guide covers the most useful monitoring commands and tools on Ubuntu 24.04 LTS. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server A user with sudo privileges Step 1 – Quick Overview with top […]
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