Kernel Drivers

Common Problems 115107

Kdump Service Enabled but Crash Dumps Not Generated

🟡 Medium   ⏱ 5–30 min  Last verified: 26 April 2020 📖 ~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 Set Up IIS Reverse Proxy on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Set Up IIS Reverse Proxy on Windows Server 2019

Introduction to IIS Reverse Proxy on Windows Server 2019 A reverse proxy sits in front of backend servers and forwards incoming client requests to those servers, returning the responses to clients as if the proxy itself generated them. On Windows Server 2019, IIS combined with the Application Request Routing (ARR) module and URL Rewrite provides […]

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How to Set Up Windows Server 2019 Group Policy Preferences — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Set Up Windows Server 2019 Group Policy Preferences

How to Set Up Windows Server 2019 Group Policy Preferences Group Policy Preferences (GPP) extend Group Policy beyond traditional settings by allowing administrators to configure and distribute settings that users can change — unlike enforced policy settings. GPP supports drive mappings, printer connections, scheduled tasks, registry settings, environment variables, shortcut creation, file and folder management, […]

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How to Install Loki Log Aggregation on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Install Loki Log Aggregation on Debian 10

Introduction Debian 10 Buster is built around the ethos of stability and free software. Setting up install loki log aggregation on debian 10 on Buster leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Buster freeze. Follow each step carefully and […]

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Amazon Linux 2 — kernel-livepatch-4.14.173-137.228 — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-4.14.173-137.228 — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2LIVEPATCH-2020-021 Related CVEs: CVE-2020-1749 CVE-2019-19319 CVE-2020-12657 CVE-2020-10711 Upstream summary: A flaw was found in the Linux kernel's implementation of some networking protocols in IPsec, such as VXLAN and GENEVE tunnels […]

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How to Configure Zabbix Agent on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure Zabbix Agent on Debian 9

Introduction Deploying configure zabbix agent on debian 9 on a Debian 9 Stretch machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites Before you begin, […]

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Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2020-5756)

🟠 High   ⏱ 15–60 min  Last verified: 23 April 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-5756 Related CVEs: CVE-2020-0543 CVE-2020-10757 CVE-2020-10711 CVE-2020-12655 CVE-2020-12770 CVE-2019-19769 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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How to Manage Users and Groups on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Manage Users and Groups on Debian 10

Introduction How to Manage Users and Groups on Debian 10 is a fundamental operation for any administrator maintaining a Debian 10 Buster server. Debian 10 Buster 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 10. […]

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Common Problems 118522

Ubuntu 16.04 LVM Volume Not Found During Startup

🟡 Medium   ⏱ 5–30 min  Last verified: 22 April 2020 📖 ~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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Common Problems 115094

Python Module Not Found After Installation

🟡 Medium   ⏱ 5–30 min  Last verified: 22 April 2020 📖 ~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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