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Effective Linux Debugging: A Detailed Guide with journalctl and dmesg

By admin March 24, 2026

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.

Network

Professional IP Management: Efficient DHCP Server Configuration With Dnsmasq On Linux

By admin March 24, 2026

Configuring a DHCP server with Dnsmasq on Linux is an important network administration skill. This article provides detailed instructions from installation to advanced configuration tips, helping you proactively manage IPs, optimize performance, and avoid network conflicts.

Artificial Intelligence tutorial - IT technology blog

NanoBot Installation Guide – The Ultralight OpenClaw Version with Only 4000 Lines of Code for Production Environments

By admin March 24, 2026

This article provides a detailed guide on installing and configuring NanoBot – an ultralight version of OpenClaw with only 4000 lines of code. It's an ideal solution for deploying efficient AI applications on resource-limited systems, based on practical experience from production environments.

Virtualization

Configuring Virtual Firewall and Routing with OPNsense/pfSense in KVM/Proxmox: Building a Secure Virtual Network System

By admin March 24, 2026

Don't let 2 AM network alerts wake you up anymore! Learn how to deploy OPNsense or pfSense as a virtual firewall and router in a KVM/Proxmox environment to enhance security, segment networks effectively, and gain detailed control over data flow for your virtual machines.

Ubuntu

Optimizing Ubuntu Application Management with Snap and Flatpak: Practical Experience from ITFromZero

By admin March 24, 2026

With the advent of Snap and Flatpak, Linux application management, especially on Ubuntu, has become much richer. This article guides you through installing, removing, and updating applications using these two technologies, helping you optimize your workflow and leverage their benefits.

Docker

Docker Registry: Self-hosting a Secure and Efficient Private Registry

By admin March 24, 2026

Learn to self-host a secure Private Docker Registry with HTTPS and user authentication. A detailed step-by-step guide from setup to optimization, helping you fully control internal Docker images, optimize costs, and enhance project security.

Centos

Detailed Guide to Installing and Configuring CentOS Web Panel (CWP) for Effective Web Server Management

By admin March 23, 2026

Real-world problem encountered: The pressure of manual server management and lessons from CentOS 8 EOLAs…

Network

Keepalived Configuration Guide: Building Virtual IP and High Availability on Linux

By admin March 23, 2026

Ever worried about system downtime? Keepalived helps solve this by creating Virtual IPs and ensuring high availability, keeping your services online.

Docker

Writing Efficient Dockerfiles: Tips for Optimizing Image Size and Build Time

By admin March 23, 2026

A practical guide to writing efficient Dockerfiles: optimize layer caching, use multi-stage builds to reduce image size, choose the right base image, and apply best practices from real-world DevOps experience.

Centos

Package Management with yum and rpm on CentOS: Install, Remove, and Manage Repositories

By admin March 23, 2026

A practical guide to package management with yum and rpm on CentOS: from installing and removing packages to adding repositories, handling dependencies, and rolling back after updates. Includes real-world experience from production server migrations.

Deploying MySQL 8 on Fedora Server: Production Configuration Guide and SELinux Troubleshooting

Vagrant + KVM/Libvirt: How to Double Your VM Speed on Linux

Gitolite: Ultra-lightweight Git Server Management for 1GB RAM VPS

MongoDB + Python: From Basic CRUD to Advanced Aggregation with PyMongo

Guide to Using git-sizer: “Rescuing” Bloated and Sluggish Git Repositories

Process Python Data Like a Pro with Counter, defaultdict, and deque

VMware vSphere NIOC Configuration Guide: Eliminating Noisy Neighbors and Optimizing Bandwidth

Deploying Metabase with Docker: A Self-Service BI Solution to Replace Manual Data Extraction

Packaging Linux Applications: A Complete Guide to flatpak-builder on Fedora

MySQL 9.0 and VECTOR: Embedding Storage Solution for AI Apps Without a Secondary DB

Effective Linux Debugging: A Detailed Guide with journalctl and dmesg

Professional IP Management: Efficient DHCP Server Configuration With Dnsmasq On Linux

NanoBot Installation Guide – The Ultralight OpenClaw Version with Only 4000 Lines of Code for Production Environments

Configuring Virtual Firewall and Routing with OPNsense/pfSense in KVM/Proxmox: Building a Secure Virtual Network System

Optimizing Ubuntu Application Management with Snap and Flatpak: Practical Experience from ITFromZero

Docker Registry: Self-hosting a Secure and Efficient Private Registry

Detailed Guide to Installing and Configuring CentOS Web Panel (CWP) for Effective Web Server Management

Keepalived Configuration Guide: Building Virtual IP and High Availability on Linux

Writing Efficient Dockerfiles: Tips for Optimizing Image Size and Build Time

Package Management with yum and rpm on CentOS: Install, Remove, and Manage Repositories