Linux Network Configuration with nmcli and netplan (Complete Guide)
Configure static IPs, DNS, and network interfaces on Linux with nmcli (NetworkManager) and netplan (Ubuntu). Covers both tools,…
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sudo and visudo: Configuring sudoers Safely (Complete Guide)
Configure Linux sudo access safely with visudo: grant full or limited privileges, use NOPASSWD for automation, organize with…
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Software RAID with mdadm on Linux (Setup + Monitoring, Complete Guide)
Set up Linux software RAID with mdadm: choose a RAID level, create the array, persist the config, monitor…
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systemd Timers vs Cron: When to Use Each (Complete Guide)
Compare systemd timers and cron for scheduling Linux tasks: syntax, dependency handling, missed-run behavior, and a clear decision…
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HAProxy Load Balancer Setup on Linux (Complete Step-by-Step Guide)
Set up HAProxy on Linux to load balance traffic across multiple web servers: configure frontend/backend, health checks, the…
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Install and Secure MariaDB on Linux (Ubuntu & AlmaLinux)
Install MariaDB on Ubuntu and AlmaLinux. Secure with mysql_secure_installation, create users, and enable remote access safely.
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Docker Compose Production Stack on Linux (Nginx + App + DB)
Deploy a production-ready Docker Compose stack on Linux with Nginx reverse proxy, app container, PostgreSQL, and persistent volumes.
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Install Jenkins on Linux (CI/CD Server Setup Guide)
Install Jenkins on Ubuntu or AlmaLinux for CI/CD. Enable service, open firewall, install plugins, and run your first…
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Self-Hosted GitHub Actions Runner on Linux
Set up a self-hosted GitHub Actions runner on Linux. Install, configure, and run CI/CD workflows on your own…
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nftables Firewall Basics on Linux (Replace iptables)
Configure nftables firewall on Rocky Linux, AlmaLinux, and Fedora. Allow SSH and web ports with a simple ruleset.
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