DNS

Common Problems 127031

CentOS Stream 10 – Common Problem 207 – Diagnosis and Fix

🟠 High   ⏱ 5–30 min  Last verified: 28 May 2025 Affected versions: CentOS Stream 10 📖 ~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 […]

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Common Problems 114638

Cockpit Web Console Unreachable on Port 9090 on RHEL 9 – Post 244

🟡 Medium   ⏱ 5–30 min  Last verified: 28 May 2025 📖 ~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 & Cross-Refs References & Further […]

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How to Set Up NFS High Availability on CentOS Stream 10 — step-by-step CentOS Stream 10 tutorial on Progressive Robot

How to Set Up NFS High Availability on CentOS Stream 10

Introduction This tutorial demonstrates how to Set Up NFS High Availability on CentOS Stream 10 on CentOS Stream 10. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered CentOS Stream 10 system with […]

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Common Problems 116571

MOK Enrollment Fails with Secure Boot on Ubuntu 24.04 LTS

🟠 High   ⏱ 5–30 min  Last verified: 28 May 2025 Affected versions: 24.04 📖 ~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 & Cross-Refs […]

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How to Configure a Virtual Host in Apache on CentOS Stream 10 — step-by-step CentOS Stream 10 tutorial on Progressive Robot

How to Configure a Virtual Host in Apache on CentOS Stream 10

Introduction How to Configure a Virtual Host in Apache on CentOS Stream 10 on CentOS Stream 10 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the […]

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Common Problems 111236

Windows Server 2025 — DNS resolution failing for internal zones after Windows Update on Server 2025 — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 28 May 2025 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 […]

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Alpine Linux 3.20 — dnsdist — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux 3.20

Alpine Linux 3.20 — dnsdist — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.20 / fixed in 1.9.4-r0 📖 ~4 min read  •  Source: Alpine secdb entry — dnsdist 1.9.4-r0 Related CVEs: CVE-2024-25581 Upstream summary: Alpine community repository for vv3.20 ships dnsdist 1.9.4-r0 which addresses CVE-2024-25581. Table of contents Symptom & Impact Environment […]

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Common Problems 111197

Windows Server 2025 — AD replication USN rollback detected after unauthorized VM snapshot restore — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 28 May 2025 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 […]

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How to Use Python Virtual Environments on Ubuntu 24.04 — step-by-step Linux tutorial on Progressive Robot

How to Deploy a Flask App with Gunicorn and Nginx on Ubuntu 24.04

Flask is a lightweight Python web microframework. This guide deploys a Flask application in production on Ubuntu 24.04 LTS using Gunicorn as the WSGI server and Nginx as the reverse proxy. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server Python 3.12 and pip installed Nginx installed Step 1 – Set Up […]

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How to Configure Active Directory Certificate Services (AD CS) on Windows Server 2025 — step-by-step Windows Server 2025 tutorial on Progressive Robot

How to Configure Active Directory Certificate Services (AD CS) on Windows Server 2025

How to Configure Active Directory Certificate Services (AD CS) on Windows Server 2025 Public Key Infrastructure (PKI) underpins a vast range of Windows security features: TLS certificates for internal websites and LDAPS, smart card authentication, EFS file encryption, S/MIME email signing, and 802.1X network access control. Active Directory Certificate Services (AD CS) is the Microsoft […]

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