Posted inCentos
Detailed Guide to Installing and Configuring CentOS Web Panel (CWP) for Effective Web Server Management
Real-world problem encountered: The pressure of manual server management and lessons from CentOS 8 EOLAs…
Posted inNetwork
Keepalived Configuration Guide: Building Virtual IP and High Availability on Linux
Ever worried about system downtime? Keepalived helps solve this by creating Virtual IPs and ensuring high availability, keeping your services online.
Posted inDocker
Writing Efficient Dockerfiles: Tips for Optimizing Image Size and Build Time
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.
Posted inCentos
Package Management with yum and rpm on CentOS: Install, Remove, and Manage Repositories
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.
Posted inNetwork
Setting Up a PXE Boot Server on Linux: Automated OS Installation Over the Network for Multiple Servers
A hands-on guide to deploying a PXE Boot Server on Linux with dnsmasq, TFTP, and NFS for automated OS installation across multiple servers over the network. Covers detailed configuration, boot menus, BIOS/UEFI differences, and a quick health check script for the full stack.
Posted inSecurity
Kubernetes Security: Essential Steps to Protect Your Cluster
A Kubernetes cluster has numerous security vulnerabilities out of the box if it isn't properly hardened. This article breaks down the most common causes and walks through setting up RBAC, Pod Security, Network Policy, secret management, and runtime monitoring to effectively protect your production cluster.
Posted inCentos
Cockpit Usage Guide: Super-Efficient Web Interface Management for CentOS Stream 9
Manage CentOS Stream 9 more easily with the Cockpit web interface. This guide will show you how to install, configure, and use advanced features, along with practical tips for efficient server administration.
Posted inDatabase
Guide to Using SQLite with Python: Lightweight Database for Automation Scripts and Small Applications
When you need a lightweight, no-fuss database for Python scripts or small applications, SQLite is an indispensable choice. This article guides you from A-Z on using SQLite with Python, covering basic operations to advanced techniques, helping you deploy quickly and without headaches.
Posted inDevelopment
Writing Unit Tests for Python Applications with Pytest: A Basic to Practical Guide
Pytest is a powerful framework for writing unit tests for Python applications. This article provides detailed instructions on how to install and configure test cases, from basic to advanced concepts like fixtures, parameterization, and mocking. You'll also learn how to run tests and measure code coverage to ensure code quality.
Posted inMonitoring
Guide to Installing and Configuring Netdata for Effective Real-time System Monitoring
Installing and configuring Netdata is key to effective real-time system monitoring. This article provides a step-by-step guide to setting up Netdata, helping you quickly grasp the operational status of your servers and applications.