authentication

How to Set Up CentOS Stream 10 with KVM Virtualization — step-by-step CentOS Stream 10 tutorial on Progressive Robot

How to Set Up CentOS Stream 10 with KVM Virtualization

Introduction Setting up set up centos stream 10 with kvm virtualization on a CentOS Stream 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Set Up CentOS Stream 10 with KVM Virtualization, with all the commands you need, the SELinux and firewalld considerations to […]

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Common Problems 111109

Windows Server 2025 — Smartcard login fails after certificate authority chain update — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 2 January 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 Set Up Software RAID with mdadm on Ubuntu 24.04 — step-by-step Linux tutorial on Progressive Robot

How to Install Prometheus and Grafana on Ubuntu 24.04

Prometheus is a powerful time-series monitoring system and Grafana is the leading visualisation dashboard. Together they form the most popular open-source monitoring stack. This guide installs both on Ubuntu 24.04 LTS. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server A user with sudo privileges Minimum 2 GB RAM Step 1 – […]

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How to Configure Kerberos Authentication in AD on Windows Server 2025 — step-by-step Windows Server 2025 tutorial on Progressive Robot

How to Configure Kerberos Authentication in AD on Windows Server 2025

How to Configure Kerberos Authentication in AD on Windows Server 2025 Kerberos is the default authentication protocol for Active Directory environments, replacing the older NTLM protocol for all domain-joined resources. Every time a domain user accesses a file share, a web application using Windows Authentication, an SQL Server instance, or any other AD-integrated service, Kerberos […]

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How to Secure MySQL 8.0 on Ubuntu 24.04 — step-by-step Linux tutorial on Progressive Robot

How to Install phpMyAdmin on Ubuntu 24.04

phpMyAdmin is a free web-based interface for managing MySQL/MariaDB databases. This guide installs phpMyAdmin 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, MySQL, PHP 8.3-FPM installed A user with sudo privileges Step 1 – Install phpMyAdmin Install from the Ubuntu repository: […]

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How to Set Up Active Directory Sites and Services on Windows Server 2025 — step-by-step Windows Server 2025 tutorial on Progressive Robot

How to Set Up Active Directory Sites and Services on Windows Server 2025

How to Set Up Active Directory Sites and Services on Windows Server 2025 Active Directory Sites and Services is the component of AD DS that maps your logical directory to your physical network topology. Without a correct site configuration, domain controllers replicate over WAN links unnecessarily, clients authenticate against distant DCs instead of local ones, […]

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How to Set Up Splunk Universal Forwarder on CentOS Stream 10 — step-by-step CentOS Stream 10 tutorial on Progressive Robot

How to Set Up Splunk Universal Forwarder on CentOS Stream 10

Introduction How to Set Up Splunk Universal Forwarder 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 resulting […]

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Common Problems 117580

Ubuntu 20.04 LTS Service Enters Crash Loop

🟡 Medium   ⏱ 5–30 min  Last verified: 1 January 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 Configure Vault PKI Secrets Engine on CentOS Stream 10 — step-by-step CentOS Stream 10 tutorial on Progressive Robot

How to Configure Vault PKI Secrets Engine on CentOS Stream 10

Introduction This tutorial demonstrates how to Configure Vault PKI Secrets Engine 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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How to Configure IPsec on Windows Server 2025 — step-by-step Windows Server 2025 tutorial on Progressive Robot

How to Configure IPsec on Windows Server 2025

How to Configure IPsec on Windows Server 2025 Internet Protocol Security (IPsec) is a suite of protocols that authenticates and encrypts IP packets at the network layer, providing transparent security for communications between hosts without requiring changes to applications. On Windows Server 2025, IPsec is deeply integrated into the Windows Firewall with Advanced Security (WFAS) […]

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