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OOM Killer: Why Linux Kills Your MySQL and How to Protect It

By admin April 24, 2026

When a Linux application shuts down unexpectedly, the OOM Killer is often to blame. Learn how to read dmesg logs, understand the oom_score metric, and protect MySQL and Redis from being terminated by the OS.

VMware

VMware Aria Operations Deployment Guide: A Lifesaver for vSphere Administrators

By admin April 24, 2026

Managing vSphere is no longer a headache with VMware Aria Operations. A detailed guide on installation, configuration, and resource optimization tips from real-world experience.

MySQL

MySQL: Don’t Let utf8 Deceive You – The Ultimate Guide to Fixing Emojis and Font Issues with utf8mb4

By admin April 24, 2026

Don't let MySQL's 'utf8' mislead you. A detailed guide on configuring utf8mb4 to support Emojis and Vietnamese, plus how to handle the 767-byte index error based on real-world experience.

Virtualization

Incus on Ubuntu: Installation Guide and Upgrading from LXD

By admin April 24, 2026

Incus is a fully open-source fork of LXD that removes Snap and optimizes performance. Read our guide to installing and configuring Incus on Ubuntu for efficient container/VM management.

Linux

Linux ACL: How to Set ‘Ultra-Detailed’ Permissions for Each User (Replacing chmod 777)

By admin April 24, 2026

Forget chmod 777! Learn how to use Linux ACLs for 'surgical' user and group permissions, solving permission issues in real-world projects.

Virtualization

Mastering HashiCorp Packer: Automating Proxmox and VMware VM Template Creation

By admin April 24, 2026

Learn how to use HashiCorp Packer to automate the Virtual Machine (VM) template creation process on Proxmox and VMware. Save 90% of setup time for DevOps and SysAdmins.

Docker

Stop Installing Terraform and Ansible Directly: Use Docker CLI to Keep Your Host Clean

By admin April 24, 2026

Stop installing Terraform or Ansible directly! Discover how to use Docker for all your CLI tools to keep your host system clean and eliminate version conflicts once and for all.

Virtualization

Automating Proxmox with Terraform: From Manual ‘Click-ops’ to Professional IaC

By admin April 23, 2026

Switch from Click-ops to Infrastructure as Code (IaC) with Terraform on Proxmox. A detailed guide to automating VM creation, saving time and reducing configuration errors.

Development

Building a Data Streaming System with Apache Kafka and Node.js: From Zero to Production

By admin April 23, 2026

Is your system slowing down when handling massive data? Discover how Apache Kafka and Node.js solve data streaming challenges with a guide from Docker setup to real-world code.

Database

Mastering Logical Replication in PostgreSQL: Flexible and Practical Data Sync

By admin April 23, 2026

PostgreSQL Logical Replication enables selective data sync and minimizes downtime. This guide covers configuration steps and fixes for Primary Key and Sequence issues based on real-world experience.

Biome: Say Goodbye to the ESLint and Prettier ‘Maze’ to Speed Up Your Projects by 25x

Optimize Proxmox VE in 5 Minutes with Helper Scripts: Remove Subscription Nag and Configure Standard Repos

Automating Ubuntu Server Hardening to CIS Benchmarks Standards with USG

Why I Ditched Requests for Httpx: A Guide to Async HTTP Client and HTTP/2 for Python

Mount and Edit qcow2, vmdk Files Directly on Linux Using NBD: Fast, Simple, No VM Boot Required

Mastering Type Checking in Python with Mypy: Stop TypeErrors Before Deployment

Installing SoftEther VPN on Linux: A Powerful ‘All-in-One’ VPN Solution

Professional NVIDIA GPU Monitoring with Prometheus & DCGM Exporter: Don’t wait for a ‘burnout’ to fix it

Circuit Breaker in Node.js with Opossum: Don’t Let One Failing Service Bring Down the Whole System

Using Vision LLM to Convert Architecture Diagrams to Terraform: From Sketch to Source Code in 30 Seconds

OOM Killer: Why Linux Kills Your MySQL and How to Protect It

VMware Aria Operations Deployment Guide: A Lifesaver for vSphere Administrators

MySQL: Don’t Let utf8 Deceive You – The Ultimate Guide to Fixing Emojis and Font Issues with utf8mb4

Incus on Ubuntu: Installation Guide and Upgrading from LXD

Linux ACL: How to Set ‘Ultra-Detailed’ Permissions for Each User (Replacing chmod 777)

Mastering HashiCorp Packer: Automating Proxmox and VMware VM Template Creation

Stop Installing Terraform and Ansible Directly: Use Docker CLI to Keep Your Host Clean

Automating Proxmox with Terraform: From Manual ‘Click-ops’ to Professional IaC

Building a Data Streaming System with Apache Kafka and Node.js: From Zero to Production

Mastering Logical Replication in PostgreSQL: Flexible and Practical Data Sync