Kernel Drivers

How to Set Up a VPN Server on Windows Server 2022 — step-by-step Windows Server 2022 tutorial on Progressive Robot

How to Set Up a VPN Server on Windows Server 2022

How to Install and Configure PHP in IIS on Windows Server 2022 Running PHP on IIS with Windows Server 2022 is a fully supported and production-ready configuration. IIS handles PHP through FastCGI, which provides better performance and isolation compared to older CGI methods. This guide walks through a complete PHP installation, IIS handler configuration, php.ini […]

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How to Monitor System Resources with htop, top and vmstat on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Monitor System Resources with htop, top and vmstat on RHEL 9

Every Linux administrator needs a reliable toolkit for answering the question “why is this server slow?” The answer is almost always in one of four resources: CPU, memory, disk I/O, or network. RHEL 9 includes several powerful tools for diagnosing resource contention: top is included in every base installation and provides a real-time process table; […]

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How to Configure Windows Server 2022 Disk Management — step-by-step Windows Server 2022 tutorial on Progressive Robot

How to Configure Windows Server 2022 Disk Management

Introduction to PowerShell Automated Deployments Automating deployments with PowerShell on Windows Server 2022 eliminates manual steps, reduces human error, and creates repeatable, auditable release processes. Whether you are deploying web applications to IIS, installing Windows Services, or pushing changes to remote servers, PowerShell provides a consistent scripting surface that integrates with virtually every CI/CD pipeline. […]

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How to Configure GlusterFS Distributed Storage on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Configure GlusterFS Distributed Storage on RHEL 7

How to Configure GlusterFS Distributed Storage on RHEL 7 GlusterFS is a scalable, open-source distributed filesystem that aggregates storage from multiple servers into a single, unified namespace. It is commonly used for high-availability shared storage in environments without expensive SAN hardware. RHEL 7 can consume GlusterFS via the CentOS Storage SIG repository or the upstream […]

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How to Configure Windows Server 2022 with Puppet — step-by-step Windows Server 2022 tutorial on Progressive Robot

How to Configure Windows Server 2022 with Puppet

What Is Remote Desktop Gateway Remote Desktop Gateway (RD Gateway) is a Windows Server role service that enables authorized remote users to connect to internal network resources — including Remote Desktop hosts, virtual desktops, and RemoteApp programs — over an HTTPS-encrypted tunnel on port 443. Without RD Gateway, RDP traffic uses port 3389 directly, which […]

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Common Problems 114479

NFS Mount Permission Denied With SELinux Enforcing

🟡 Medium   ⏱ 5–30 min  Last verified: 2 November 2022 📖 ~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 Install MySQL 8 on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Install MySQL 8 on Debian 11

Introduction Debian 11 Bullseye is built around the ethos of stability and free software. Setting up install mysql 8 on debian 11 on Bullseye leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Bullseye freeze. Follow each step carefully and the […]

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Common Problems 111651

Windows Server 2022 — IIS app pool identity account locked out causing 503 Service Unavailable — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 1 November 2022 Affected versions: Windows Server 2022 📖 ~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 Install and Configure Samba File Server on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Install and Configure Samba File Server on Debian 11

Introduction How to Install and Configure Samba File Server on Debian 11 is a fundamental operation for any administrator maintaining a Debian 11 Bullseye server. Debian 11 Bullseye ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from […]

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Common Problems 117125

Ubuntu 22.04 LTS – Swap disabled causing OOM kills under load – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 31 October 2022 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 […]

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