mdadm is the standard Linux tool for creating and managing software RAID arrays. RAID provides redundancy and/or performance improvements across multiple disks. This guide creates a RAID 1 (mirror) array on Ubuntu 24.04 LTS. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server Two or more additional block devices (e.g. /dev/sdb, /dev/sdc) […]
🟠 High ⏱ 5–30 min Last verified: 13 January 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 […]
Introduction How to Configure Mandatory Integrity Control on CentOS Stream 10 on CentOS Stream 10 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 […]
🟠 High ⏱ 5–30 min Last verified: 13 January 2025 Affected versions: Ubuntu 24.04 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 […]
Introduction This tutorial demonstrates how to Install PostgreSQL on CentOS Stream 10 on CentOS Stream 10. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered CentOS Stream 10 system with the default AppStream […]
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: AlmaLinux 9 📖 ~4 min read • Source: AlmaLinux ALSA ALSA-2024:2366 Related CVEs: CVE-2024-24258 CVE-2024-24259 Upstream summary: freeglut is a completely open source alternative to the OpenGL Utility Toolkit (GLUT) library with an OSI approved free software license. Security Fix(es): * freeglut: […]
🟡 Medium ⏱ 10–30 min Last verified: 13 January 2025 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read • Source: Ubuntu Security Notice USN-7677-1 Related CVEs: CVE-2024-6174 CVE-2024-11584 CVE-2023-1786 https://bugs.launchpad.net/cloud-init/+bug/2013967 CVE-2022-2084 Upstream summary: Harry Sintonen discovered that the hotplugd socket in cloud-init was world writable. An attacker could possibly use this issue to […]
🟠 High ⏱ 15–60 min Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read • Source: Amazon Linux advisory ALAS2-2024-2677 Related CVEs: CVE-2024-39936 Upstream summary: An issue was discovered in HTTP2 in Qt before 5.15.18, 6.x before 6.2.13, 6.3.x through 6.5.x before 6.5.7, and 6.6.x through 6.7.x before 6.7.3. […]
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Alpine Linux 3.20 / fixed in 1.18.0-r0 📖 ~4 min read • Source: Alpine secdb entry — libnbd 1.18.0-r0 Related CVEs: CVE-2023-5215 CVE-2022-0485 CVE-2021-20286 Upstream summary: Alpine community repository for vv3.20 ships libnbd 1.18.0-r0 which addresses CVE-2023-5215. Table of contents Symptom & […]
🟢 Low ⏱ 5–15 min Last verified: 13 January 2025 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read • Source: Ubuntu Security Notice USN-7752-1 Related CVEs: CVE-2023-26917 CVE-2023-26916 Upstream summary: It was discovered that libyang incorrectly handled certain memory operations when parsing YANG strings. An attacker could possibly use this issue to cause […]
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