authentication

How to Configure PowerShell DSC for Configuration Management on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure PowerShell DSC for Configuration Management on Windows Server 2012 R2

How to Configure PowerShell DSC for Configuration Management on Windows Server 2012 R2 PowerShell Desired State Configuration (DSC) is Microsoft’s built-in configuration management framework that allows you to define the intended state of a Windows system declaratively and have the system automatically enforce that state. On Windows Server 2012 R2, DSC is powered by the […]

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How to Set Up FluxCD on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Up FluxCD on Oracle Linux 8

Introduction How to Set Up FluxCD on Oracle Linux 8 on Oracle Linux 8 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 configuration is […]

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Common Problems 118416

Ubuntu 16.04 LTS – apt update shows NO_PUBKEY signature failures

🟠 High   ⏱ 5–30 min  Last verified: 13 January 2021 Affected versions: Ubuntu 16.04 LTS Ubuntu 16.04 Ubuntu 16.04.7 📖 ~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 […]

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Common Problems 112914

Windows Server 2016 — Password change rejected with policy mismatch even though it meets stated requirements — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 13 January 2021 Affected versions: Windows Server 2016 📖 ~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 Docker Engine on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Install Docker Engine on Oracle Linux 8

Introduction Oracle Linux 8 ships with a stable, security-hardened base that makes deploying install docker engine on oracle linux 8 both straightforward and auditable. This tutorial covers the complete procedure for how to Install Docker Engine on Oracle Linux 8, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for […]

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How to Install and Configure IIS on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Install and Configure IIS on Windows Server 2016

How to Configure Windows Server 2016 IIS Web Server Internet Information Services (IIS) 10.0 is the web server platform included with Windows Server 2016. It supports HTTP, HTTPS, FTP, and WebSockets, and is used to host websites, web applications, REST APIs, and web services. This guide covers installing IIS, creating websites, configuring bindings and SSL […]

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How to Configure Apache with mod_security on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Configure Apache with mod_security on Oracle Linux 8

Introduction Oracle Linux 8 ships with a stable, security-hardened base that makes deploying configure apache with mod_security on oracle linux 8 both straightforward and auditable. This tutorial covers the complete procedure for how to Configure Apache with mod_security on Oracle Linux 8, including dnf module streams where applicable, systemd unit management, and the firewalld rules […]

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How to Install and Configure Cassandra on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install and Configure Cassandra on Debian 9

Introduction How to Install and Configure Cassandra on Debian 9 is a fundamental operation for any administrator maintaining a Debian 9 Stretch server. Debian 9 Stretch 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 Debian 9. […]

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How to Configure RRAS on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure RRAS on Windows Server 2012 R2

How to Configure RRAS on Windows Server 2012 R2 Routing and Remote Access Service (RRAS) on Windows Server 2012 R2 is a multi-purpose networking role that provides routing, VPN connectivity, and dial-up access services. RRAS can function as a software router supporting static and dynamic routing protocols (RIP v2 and OSPF via add-ons), as a […]

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How to Install MariaDB on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Install MariaDB on Oracle Linux 8

Introduction How to Install MariaDB on Oracle Linux 8 on Oracle Linux 8 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 configuration is reproducible […]

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