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Compiling & Installing Software from Source on Linux: An A-Z Guide
Introduction: When Do You Need to "Build" Software Yourself? On Linux, the most common way…
Posted inLinux
Understanding and Using Linux Capabilities: Fine-Grained Permissions Without Root for Applications
Don't grant full root privileges to your application! This article provides a detailed guide on Linux Capabilities, a flexible permission mechanism that allows applications to perform privileged tasks without needing full root access. Includes a quick guide, in-depth explanations, and practical experiences for DevOps professionals.
Posted inLinux
Effective Linux Debugging: A Detailed Guide with journalctl and dmesg
Debugging on Linux is an essential skill. journalctl and dmesg are two powerful tools that help you identify the root cause of any issue, from services to hardware. This article guides you on how to use them effectively.
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Guide to managing Logical Volumes (LVM) on Linux: Create, extend, and shrink partitions flexibly
LVM (Logical Volume Manager) is a flexible disk space management solution on Linux, allowing easy creation, extension, and shrinking of partitions. This article provides detailed instructions for LVM operations from basic to advanced, along with practical examples and personal experiences.
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Customizing Kernel Parameters with sysctl on Linux: Optimizing Server Performance and Security
Adjusting kernel parameters with sysctl is a powerful technique to optimize Linux server performance and enhance security. From a late-night troubleshooting experience, I realized that understanding kernel behavior and knowing how to fine-tune it can save a system in the most critical situations. This is an indispensable skill for any IT engineer managing Linux production systems.
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Guide to Using fsck to Check and Repair File System Errors on Linux: Recovering Data and Maintaining Stability
As an IT engineer, I frequently face unexpected system incidents. Linux file system errors are among them, potentially causing data loss and significant downtime. This article guides you on using the `fsck` command to effectively check and repair these errors.
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Optimize Linux server performance for production: A detailed guide for beginners
This article provides a detailed guide on how to optimize Linux server performance for a production environment. From resource monitoring to fine-tuning CPU, RAM, Disk I/O, and Network, it's aimed at beginners.
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How to Configure sudo and the sudoers File on Linux: Safe Permission Management for Each User
A comparison of 3 approaches to granting sudo access on Linux: adding users to the wheel/sudo group, editing /etc/sudoers directly, or using /etc/sudoers.d/. Covers the pros and cons of each approach along with practical configuration guides using visudo, Command Aliases, and NOPASSWD for team-based production environments.
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Log Rotation on Linux with Logrotate: Rescuing Your Disk Drive in the Middle of the Night
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.
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Linux Disk Mount and Management Guide: From lsblk to fstab
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.