Security
Change or Remove SSH Key Passphrase on Linux
An SSH key passphrase encrypts the private key file on disk so that a stolen key file alone…
Category
Linux Tutorials
AlmaLinux
Install VirtualBox 7.1 on Rocky Linux 10 / AlmaLinux 10
VirtualBox is a free, open source Type 2 hypervisor from Oracle that lets you run multiple guest operating…
How To
Install LibreNMS on Rocky Linux 10 / AlmaLinux 10
LibreNMS is an open-source network monitoring system built on PHP, MySQL/MariaDB, and SNMP. It provides auto-discovery of network…
Databases
Install and Configure Redis Server on Ubuntu 24.04 / Debian 13
Redis is an in-memory data structure store used as a database, cache, message broker, and streaming engine. It…
Databases
Install and Configure PostgreSQL 17 on Ubuntu 24.04 / Debian 13
PostgreSQL 17 brings meaningful improvements to logical replication, query performance, and memory management. This guide walks through a…
Debian
Install and Configure Nginx on Ubuntu 24.04 / Debian 13 as Web Server and Reverse Proxy
Nginx sits behind a significant portion of the internet’s busiest websites. It handles static content with minimal resource…
Debian
Setup WireGuard VPN on Ubuntu 24.04 / Debian 13 / Rocky Linux 10
WireGuard has become the go-to VPN protocol for engineers who value speed, simplicity, and strong cryptography. Unlike OpenVPN…
How To
Setup Mail Server on Rocky Linux 10 with Postfix, Dovecot, MariaDB and Roundcube
Running your own mail server gives you full control over email delivery, storage, and privacy. This guide walks…
AlmaLinux
Install Nagios Server on Rocky Linux 10 / AlmaLinux 10
Nagios Core remains one of the most battle-tested infrastructure monitoring platforms available. It watches your hosts, services, and…
How To
LPIC 101 – Processing Text Streams Using Filters on Linux
Text processing is one of the most practical skills a Linux administrator uses daily. Log analysis, configuration file…
How To
Install OpenStack Dalmatian on Rocky Linux 10 with Packstack
OpenStack is a free, open-source cloud platform for building private and public cloud infrastructure. It provides compute, storage,…
Monitoring
Automate Icinga2 Monitoring with Icinga Director on Rocky Linux 10 / RHEL 10
Icinga Director is a configuration module for Icinga Web 2 that lets you manage all Icinga 2 monitoring…