web server

How to Configure IIS CORS Headers on Windows Server 2025 — step-by-step Windows Server 2025 tutorial on Progressive Robot

How to Configure IIS CORS Headers on Windows Server 2025

How to Configure IIS CORS Headers on Windows Server 2025 Cross-Origin Resource Sharing (CORS) is a browser security mechanism that controls how web pages hosted on one origin (scheme + hostname + port) can request resources from a different origin. When a JavaScript application served from https://app.example.com tries to call an API at https://api.example.com, the […]

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Common Problems 127153

CentOS Stream 10 – Common Problem 194 – Diagnosis and Fix

🟡 Medium   ⏱ 5–30 min  Last verified: 20 June 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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How to Install containerd as a Container Runtime on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Install containerd as a Container Runtime on RHEL 9

containerd is a high-performance, industry-standard container runtime that implements the Open Container Initiative (OCI) specification. While Docker uses containerd internally as its core container lifecycle manager, containerd can also run standalone as a Kubernetes container runtime — this is the default runtime for most managed Kubernetes services (EKS, GKE, AKS) and the recommended runtime for […]

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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 Netdata on Ubuntu 24.04

Netdata is a real-time performance monitoring tool that collects thousands of metrics per second with near-zero overhead. It provides a beautiful web dashboard out of the box with no configuration required. This guide installs Netdata on Ubuntu 24.04 LTS. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server A user with sudo […]

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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 Node.js Application with PM2 on Ubuntu 24.04

PM2 is a battle-tested process manager for Node.js applications that provides automatic restarts, logging, monitoring, and cluster mode. This guide deploys a Node.js application in production using PM2 on Ubuntu 24.04 LTS. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server Node.js 20 LTS installed Nginx installed (for reverse proxy) Step 1 […]

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How to Set Up a Reverse Proxy with IIS ARR on Windows Server 2025 — step-by-step Windows Server 2025 tutorial on Progressive Robot

How to Set Up a Reverse Proxy with IIS ARR on Windows Server 2025

How to Set Up a Reverse Proxy with IIS ARR on Windows Server 2025 A reverse proxy sits between clients and one or more backend servers, forwarding requests transparently. In a Windows Server 2025 environment, IIS with Application Request Routing (ARR) is the native solution for reverse proxying, offering deep integration with IIS features like […]

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Common Problems 111625

Windows Server 2025 IIS Application Pool Rapid-Fail Protection Triggers — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 10 June 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 Configure PowerShell Just Enough Administration (JEA) on Windows Server 2025 — step-by-step Windows Server 2025 tutorial on Progressive Robot

How to Configure PowerShell Just Enough Administration (JEA) on Windows Server 2025

How to Configure PowerShell Just Enough Administration (JEA) on Windows Server 2025 Just Enough Administration (JEA) is a PowerShell security technology that lets you delegate specific administrative tasks to users or groups without granting them full administrator rights. Instead of handing someone a domain admin account so they can restart a service, JEA creates a […]

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Common Problems 114518

Cockpit Web Console Unreachable On Port 9090

🟡 Medium   ⏱ 5–30 min  Last verified: 9 June 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 Use PowerShell DSC (Desired State Configuration) on Windows Server 2025 — step-by-step Windows Server 2025 tutorial on Progressive Robot

How to Use PowerShell DSC (Desired State Configuration) on Windows Server 2025

How to Use PowerShell DSC (Desired State Configuration) on Windows Server 2025 PowerShell Desired State Configuration (DSC) is a declarative management framework built into Windows Server 2025 that lets you define the intended configuration of a server — installed features, running services, registry values, file contents, and more — and then continuously enforce that state. […]

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