Infrastructure tutorials

Production-grade guides for Linux, servers, security and performance. Copy-paste commands, multi-distro support, written by engineers who run this in production.

performance Beginner

Optimize Linux system performance with htop process monitoring and resource analysis

Learn to use htop for advanced Linux system monitoring, process management, and performance optimization. Master resource analysis, identify bottlenecks, and automate monitoring tasks for production environments.

25 min 6 distros 2,176 views
linux Beginner

Configure Linux file compression and archiving with tar, gzip and backup automation

Learn to create compressed archives with tar and gzip, manage different compression formats, and implement automated backup scripts with rotation for efficient system maintenance and data protection.

25 min 6 distros 1,797 views
linux Beginner

Configure Linux user and group management with useradd, usermod and advanced account security

Learn to manage Linux users and groups with useradd, usermod, and groupadd commands. This tutorial covers creating accounts, setting permissions, configuring password policies, and implementing security best practices for production systems.

25 min 6 distros 1,608 views
monitoring Beginner

Install and configure Nagios Core 4.5 for network and server monitoring with web interface

Set up Nagios Core 4.5 monitoring system with Apache web interface to monitor servers, network devices, and services. Configure hosts, services, and email notifications for comprehensive infrastructure monitoring.

45 min 6 distros 1,690 views
networking Beginner

Configure network interface aliases and secondary IP addresses on Linux

Learn how to configure multiple IP addresses on a single network interface using systemd-networkd and NetworkManager. Set up persistent network aliases for hosting multiple services, load balancing, and network segmentation.

20 min 6 distros 3,586 views
databases Beginner

Install and configure MariaDB 11.6 with performance optimization and security hardening

Set up MariaDB 11.6 as a high-performance MySQL alternative with InnoDB optimization, SSL encryption, automated backups, and comprehensive security hardening for production environments.

45 min 6 distros 1,820 views
security Beginner

Configure Linux file permissions and access control with umask and chmod best practices

Learn how to configure secure Linux file permissions using chmod, set default permissions with umask, and implement proper access control to prevent security vulnerabilities while fixing permission denied errors.

25 min 6 distros 1,918 views
performance Beginner

Optimize Linux boot time with systemd service analysis and performance tuning

Learn to analyze and optimize Linux boot performance using systemd-analyze tools. Identify bottlenecks, disable unnecessary services, and configure parallel startup to reduce boot times on Ubuntu, Debian, and RHEL-based systems.

25 min 6 distros 2,886 views
hosting Beginner

Install and configure Node.js web applications with PM2 and reverse proxy

Deploy production-ready Node.js applications using PM2 process manager and Nginx reverse proxy with SSL certificates, automatic startup, and comprehensive monitoring for high-availability web hosting.

25 min 6 distros 2,578 views
linux Beginner

Configure Linux environment variables and PATH management for development workflows

Learn how to properly configure Linux environment variables and manage your PATH for development workflows. This guide covers temporary and persistent variables, user vs system-wide configuration, and troubleshooting common issues across Ubuntu, Debian, AlmaLinux, Rocky Linux, and Fedora.

20 min 6 distros 1,517 views
performance Beginner

Optimize Linux filesystem performance with mount options and I/O schedulers

Learn to optimize Linux filesystem performance by configuring I/O schedulers, tuning ext4 mount options, and monitoring disk performance with iostat and iotop for high-throughput workloads.

25 min 6 distros 2,467 views
security Beginner

Configure SSH key authentication and disable password login for secure server access

Set up SSH public key authentication on Linux servers and disable password-based logins to prevent brute force attacks and improve security. This tutorial covers key generation, server configuration, and troubleshooting common authentication issues.

20 min 6 distros 2,916 views

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