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Memory Ballooning and KSM on KVM/Proxmox: Optimize RAM to Run More Virtual Machines

By admin May 1, 2026

Memory Ballooning and KSM (Kernel Same-page Merging) are two RAM optimization techniques that let you run more VMs on the same hardware without upgrading your server. This guide covers practical configuration on KVM/Proxmox with a real-world comparison of the trade-offs for each approach.

Network

Wake-on-LAN (WoL) on Linux: Don’t Let Turning On Your Server Become a Nightmare

By admin May 1, 2026

Stop letting remote server management haunt you. Here is a detailed guide on configuring Wake-on-LAN on Linux to boot your server remotely with a single command.

Linux

Rescuing Linux Laptop Battery Life: Mastering the TLP and Powertop Duo

By admin April 30, 2026

Don't let your Linux laptop become a hand warmer. Here is a detailed guide on combining TLP and Powertop to increase battery life by 30-50% and keep your system cool.

Linux

Mastering Software RAID on Linux with mdadm: Practical Experience from Lab to Production

By admin April 30, 2026

A hands-on guide to managing RAID 1/5/6 on Linux using mdadm. Discover troubleshooting secrets and storage optimization tips based on real-world experience.

Virtualization

Kata Containers: When VM Security Meets Container Speed

By admin April 29, 2026

A guide to installing Kata Containers to combine VM security with container speed. Learn to configure microVMs for Docker and compare QEMU vs Firecracker.

Network

Mastering Network Namespaces: Building Your Own Isolated Network Lab on Linux

By admin April 29, 2026

A detailed guide on using Network Namespaces on Linux for network isolation. A lightweight VM alternative for testing applications and system management.

Linux

How to Use strace to Debug Applications on Linux: Tracing System Calls and Finding Root Causes Effectively

By admin April 28, 2026

strace lets you trace every system call a process makes on Linux — from file opens and network connections to lock waits — without needing source code or recompiling. This guide covers practical strace usage for debugging permission errors, missing files, hanging services, and I/O bottlenecks.

Database

Getting Started with ClickHouse: A High-Performance OLAP Database for Large-Scale Analytics

By admin April 28, 2026

ClickHouse is a columnar OLAP database that lets you analyze hundreds of millions of rows in seconds. This guide covers installation on Linux, choosing the right table engine, importing real-world data, and production deployment tips for DevOps teams.

Linux

Speed Up Your Linux Terminal with fzf: Find Files and History Instantly

By admin April 27, 2026

Learn how to install and configure fzf (fuzzy finder) on Linux to quickly search for files, command history, and manage processes. Practical tips to boost your Terminal productivity.

Linux

Controlling Process Resources with cgroups v2 on Linux: Limiting CPU, RAM, and I/O Without Docker

By admin April 27, 2026

Learn how to master Linux system resources with cgroups v2. Detailed instructions on limiting CPU, RAM, and I/O for applications running directly on the OS without Docker.