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How to Install and Use OpenClaw: An Open-Source Personal AI Assistant

By admin March 4, 2026

A guide to installing OpenClaw — an open-source AI assistant that runs directly in your terminal. Compares three approaches (cloud API, web UI, CLI assistant), covers Ollama backend configuration, and shares tips for integrating it into your developer workflow based on six months of real-world use.

Fedora

Managing Fedora Server Remotely with Cockpit: A Review After 6 Months in Production

By admin March 4, 2026

Cockpit is a web console built into Fedora Server that lets you manage your system remotely through a browser without needing an SSH client. This article compares Cockpit with pure SSH and Webmin, walks through installation and security hardening, and shares a real-world workflow from 6 months of production use.

Monitoring

Installing Prometheus and Grafana for Real-Time Server Monitoring

By admin March 4, 2026

A practical guide to installing Prometheus, Node Exporter, and Grafana on Ubuntu 22.04 for real-time server monitoring. Covers scrape target configuration, importing a pre-built dashboard (ID 1860), and setting up CPU/RAM threshold alerts.

Linux

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

By admin 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 admin 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.

Monitoring

Graylog: Centralizing and Analyzing Logs from Multiple Linux Servers

By admin March 4, 2026

A step-by-step guide to installing Graylog with Docker Compose to centralize logs from multiple Linux servers into one place. Covers rsyslog configuration, the Docker GELF logging driver, and setting up stream alerts — based on 6 months of real production experience.

Ubuntu

Managing Packages with apt on Ubuntu: apt vs apt-get vs dpkg — Which One Should You Use?

By admin March 4, 2026

A comparison of apt, apt-get, dpkg, and snap on Ubuntu — when to use each tool and what their pros and cons are. Includes a practical guide to the most commonly used package management commands on Ubuntu Server and Desktop.

Linux

Securing Your SSH Server: Essential Steps to Prevent Getting Hacked

By admin 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.

Fedora

Managing Flatpak Applications on Fedora: Installation, Sandboxing, and Storage Optimization

By admin March 4, 2026

Flatpak on Fedora is convenient, but it can silently consume tens of gigabytes of disk space if not managed properly. This guide covers installation, controlling sandbox permissions, and cleaning up unused runtimes to optimize real-world storage usage.

Database

PostgreSQL Backup Done Right: Strategy, Automation, and Real-World Restore Testing

By admin March 4, 2026

PostgreSQL backup isn't just about running pg_dump and walking away — the more critical part is regular restore testing and monitoring backup file integrity. This post shares a battle-tested workflow with automation scripts, a comparison of pg_dump vs pg_basebackup, and a complete checklist to make sure your backups actually work when it counts.

virt-v2v Guide: Easily Convert Virtual Machines from VMware, Hyper-V to KVM

Configuring VLAN on Linux: Network Isolation, Enhanced Security, and Easy Management

Nginx TLS 1.3 Configuration Guide and Cipher Suite Optimization: Achieve A+ on SSL Labs

How to Use Google Gemini API with Python: Efficient Implementation from Basics to Production

Efficient Physical to Virtual (P2V) Server Migration with VMware vCenter Converter Standalone

Guide to configuring SMS and Telegram alerts with Alertmanager

Guide to Installing and Optimizing MongoDB for Production Environments

VirtualBox: Advanced Network Configuration – Shared Folders, VPN, and Isolated Environments for IT

Zabbix Installation Guide from A-Z: Build Your Own Professional Monitoring System

Guide to Configuring SSH Tunnel: Local, Remote, and Dynamic Port Forwarding

How to Install and Use OpenClaw: An Open-Source Personal AI Assistant

Managing Fedora Server Remotely with Cockpit: A Review After 6 Months in Production

Installing Prometheus and Grafana for Real-Time Server Monitoring

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

How to Use rsync for Efficient File Synchronization on Linux

Graylog: Centralizing and Analyzing Logs from Multiple Linux Servers

Managing Packages with apt on Ubuntu: apt vs apt-get vs dpkg — Which One Should You Use?

Securing Your SSH Server: Essential Steps to Prevent Getting Hacked

Managing Flatpak Applications on Fedora: Installation, Sandboxing, and Storage Optimization

PostgreSQL Backup Done Right: Strategy, Automation, and Real-World Restore Testing