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Oracle Linux 8 — Error: " mcelog service does not support this processor " — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Error: ” mcelog service does not support this processor “

🟠 High   ⏱ 5–30 min  Last verified: 9 June 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: Oracle Bug 29501190 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 […]

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Common Problems 112531

Windows Server 2019 – Hyper-V virtual switch loses uplink after NIC driver update – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 9 June 2021 Affected versions: Windows Server 2019 📖 ~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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AlmaLinux 8 — xorg-x11-drv-qxl — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — xorg-x11-drv-qxl — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2020:1661 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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How to Install Pulumi on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Install Pulumi on FreeBSD 13

Introduction Deploying install pulumi on freebsd 13 on a FreeBSD 13 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays entirely within the standard base + […]

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FreeBSD 13 — pngcheck — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — pngcheck — security advisory — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 9 June 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: pngcheck — Buffer-overrun vulnerability Upstream summary: The libpng project reports: pngcheck versions 3.0.0 and earlier have a pair of buffer-overrun bugs related to the sPLT and PPLT chunks (the latter […]

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Common Problems 112403

Windows Server 2019 — Conditional forwarders timing out across site-to-site VPN links on Windows Server 2019 DNS — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 9 June 2021 Affected versions: Windows Server 2019 📖 ~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 Dynamic LPAR (DLPAR) on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Configure Dynamic LPAR (DLPAR) on IBM AIX 7.1

Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure dynamic lpar (dlpar) on ibm aix 7.1 on […]

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Ubuntu 20.04 — json-c — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — json-c — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 9 June 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4360-4 Related CVEs: CVE-2020-12762 https://launchpad.net/bugs/1878723 Upstream summary: USN-4360-1 fixed a vulnerability in json-c. The security fix introduced a memory leak that was reverted in USN-4360-2 and USN-4360-3. This update provides […]

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Einrichten eines Node-Projekts mit TypeScript — step-by-step Javascript tutorial on Progressive Robot

Einrichten eines Node-Projekts mit TypeScript

Das Schreiben von serverseitigem JavaScript kann schwierig sein, wenn eine Codebase wächst. TypeScript ist eine typisierte (optionale) Obermenge von JavaScript, die bei der Erstellung und Verwaltung großer JavaScript-Projekte helfen kann. Man kann es sich als JavaScript mit zusätzlichen Funktionen wie starker statischer Typisierung, Kompilierung und objektorientierter Programmierung vorstellen. In diesem Tutorial werden wir erkunden, wie das [Express](https://expressjs.com/)-Framework mit TypeSc

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