Linux Archives - Page 16 of 17 - ITFROMZERO

Log Rotation on Linux with Logrotate: Rescuing Your Disk Drive in the Middle of the Night

By IT From Zero March 10, 2026

As an IT engineer, I've experienced servers crashing at 2 AM due to full log files. This article consolidates hard-earned experience on using Logrotate on Linux, an indispensable tool for automatically managing, rotating, and compressing log files to keep your system stable and efficient.

Linux

Linux Disk Mount and Management Guide: From lsblk to fstab

By IT From Zero March 7, 2026

A detailed guide to mounting and managing disks on Linux: identifying block devices with lsblk, creating partitions with parted/fdisk, formatting filesystems with ext4/xfs, and configuring fstab with UUIDs for persistent mounts. Real-world experience from a CentOS 7 production server.

Linux

Monitoring Linux System Resources with htop and iotop: A Practical Guide

By IT From Zero March 6, 2026

A practical guide to using htop and iotop for monitoring CPU, RAM, and disk I/O on Linux servers. Covers metric interpretation, practical keyboard shortcuts, common bottleneck diagnostic scenarios, and automated monitoring scripts.

Linux

Configuring a Firewall with iptables on Linux: A Production-Ready Script for Web Servers

By IT From Zero March 4, 2026

A production-ready iptables script for web servers: chains and tables structure, SSH rate limiting, locking down MySQL and Redis, and how to persist rules across reboots. Includes a tip to avoid locking yourself out during testing.

Linux

How to Use rsync for Efficient File Synchronization on Linux

By IT From Zero March 4, 2026

rsync solves the file synchronization problem more intelligently than plain cp by transferring only the data that has actually changed. This guide covers rsync from the basics through setting up automated SSH-based backups with real-world cron job examples.

Linux

Securing Your SSH Server: Essential Steps to Prevent Getting Hacked

By IT From Zero March 4, 2026

A hands-on guide to SSH server security: comparing 4 common approaches, analyzing their trade-offs, and concrete configuration steps from SSH keys to Fail2ban. Prioritize in the right order to protect your server as effectively as possible.

Linux

Automating Backups with Cron Jobs on Linux: Real Scripts from Production

By IT From Zero March 3, 2026

A guide to setting up automated backups on Linux with cron jobs: complete scripts for MySQL, config files, and user uploads, with integrity verification and failure alerts. Real-world experience from managing multiple production VPS instances.

Linux

Managing Processes with systemd on Linux: Practical Tips from the Trenches

By IT From Zero March 3, 2026

systemd is the default process manager on modern Linux. This article shares essential commands, how to create custom services, debug failures, and best practices from real-world server operations.

Linux

Install and Configure Nginx on Ubuntu 22.04: A Complete Web Server Guide from A to Z

By IT From Zero March 2, 2026

A step-by-step guide to installing and configuring Nginx on Ubuntu 22.04 with a quick-start structure — from the first command to virtual hosts, reverse proxy, and HTTPS. Includes practical tips on performance tuning, rate limiting, and zero-downtime reloads in production.

Linux

Installing and Configuring NTP Server on Linux: Fixing Time Sync Issues in Production

By IT From Zero March 2, 2026

A guide to installing chrony and configuring internal NTP server/client on Linux, drawn from real production operations experience. Covers cluster configuration, firewall setup, offset verification, and a basic monitoring script.