How to Configure High Availability for DHCP with DHCP Failover on Windows Server 2025 A DHCP server is a critical piece of network infrastructure: if it fails, new devices cannot obtain IP addresses and existing leases will eventually expire, causing network connectivity outages. Historically, administrators worked around this limitation by splitting scopes manually between two […]
🟡 Medium ⏱ 5–30 min Last verified: 28 December 2024 Affected versions: Windows Server 2025 📖 ~2 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution — Primary Fix Solution — Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]
Netdata is a lightweight, real-time performance monitoring agent that provides per-second metrics with zero configuration for hundreds of applications and services out of the box. Unlike traditional monitoring solutions that poll at 15- or 60-second intervals, Netdata collects data every second and renders interactive charts in its built-in web dashboard instantly. It is designed to […]
Gitea is a lightweight, self-hosted Git service written in Go. It offers a GitHub-like interface with a tiny resource footprint — ideal for small teams and personal servers. This guide installs Gitea on Ubuntu 24.04 LTS. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server MySQL 8.0 or PostgreSQL 16 installed A […]
Drupal 11 is an enterprise-grade open-source CMS and web application framework. Released in 2024, it requires PHP 8.3+ and modern extensions. This guide installs Drupal 11 on Ubuntu 24.04 LTS with Nginx and PHP 8.3. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server Nginx, PHP 8.3-FPM, MySQL 8.0 installed Composer installed […]
How to Configure Network Policy Server (NPS/RADIUS) on Windows Server 2025 Network Policy Server (NPS) is Microsoft’s implementation of the Remote Authentication Dial-In User Service (RADIUS) protocol, built into Windows Server 2025. NPS acts as the central authentication, authorization, and accounting (AAA) broker for network access requests originating from VPN gateways, wireless access points (802.1X), […]
How to Implement Blue-Green Deployment on Windows Server 2025 Blue-green deployment is a release strategy that maintains two identical production environments — Blue (currently live) and Green (the new version being deployed to) — and switches traffic between them atomically. The key benefit is near-zero downtime: the switch is a configuration change that can be […]
🟠 High ⏱ 5–30 min Last verified: 24 December 2024 Affected versions: Ubuntu 22.04 LTS 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]
Introduction Setting up configure mysql group replication on centos stream 10 on a CentOS Stream 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Configure MySQL Group Replication on CentOS Stream 10, with all the commands you need, the SELinux and firewalld considerations to […]
How to Configure WSUS for Automated Patch Management on Windows Server 2025 Windows Server Update Services (WSUS) remains the cornerstone of on-premises patch management in Windows environments. On Windows Server 2025, WSUS delivers centralized control over which updates are approved for distribution, when synchronization occurs, and how machines across your organization are grouped for targeted […]
