Linux

openSUSE Leap 15.5 — libpq5 — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Leap 15.5

openSUSE Leap 15.5 — libpq5 — multiple vulnerabilities (12 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: openSUSE Leap 15.5 📖 ~4 min read  •  Source: SUSE advisory SUSE-CU-2023:3807-1 (see also SUSE bugzilla) Related CVEs: CVE-2023-5869 CVE-2024-10979 CVE-2024-7348 CVE-2024-0985 CVE-2023-5868 CVE-2024-10976 CVE-2024-10978 CVE-2024-4317  +4 more Upstream summary: A flaw was found in PostgreSQL that allows authenticated database users to […]

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How to Configure Unattended Upgrades on Ubuntu 24.04 — step-by-step Linux tutorial on Progressive Robot

How to Set a Hostname on Ubuntu 24.04

The hostname identifies your server on a network and appears in shell prompts, log files, and monitoring dashboards. Ubuntu 24.04 LTS uses hostnamectl to view and change it persistently. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server A user with sudo privileges Step 1 – Check the Current Hostname Display the […]

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Oracle Linux 9 — php security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — php security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2022-8197)

🟡 Medium   ⏱ 10–30 min  Last verified: 2 January 2025 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-8197 Related CVEs: CVE-2022-31625 CVE-2021-21708 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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Common Problems 127111

CentOS Stream 10 – Common Problem 215 – Diagnosis and Fix

🟠 High   ⏱ 5–30 min  Last verified: 2 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 […]

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Common Problems 120195

Debian 12 Logrotate Not Rotating Application Logs

🟡 Medium   ⏱ 5–30 min  Last verified: 2 January 2025 Affected versions: Debian 12 📖 ~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 Configure CentOS Stream 10 with Secure Boot — step-by-step CentOS Stream 10 tutorial on Progressive Robot

How to Configure CentOS Stream 10 with Secure Boot

Introduction This tutorial demonstrates how to Configure CentOS Stream 10 with Secure Boot 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 […]

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Common Problems 119019

Ubuntu 14.04 LTS – apt cannot locate packages after repository retirement

🟠 High   ⏱ 5–30 min  Last verified: 2 January 2025 Affected versions: Ubuntu 14.04 LTS Ubuntu 14.04 Ubuntu 14.04.6 📖 ~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 116910

Ubuntu 22.04 LTS Netplan Apply Breaks Network After YAML Change

🟡 Medium   ⏱ 5–30 min  Last verified: 2 January 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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Common Problems 116635

Ubuntu 24.04 LTS – unattended-upgrades stuck by held or broken packages – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 2 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 […]

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How to Set Up CentOS Stream 10 with KVM Virtualization — step-by-step CentOS Stream 10 tutorial on Progressive Robot

How to Set Up CentOS Stream 10 with KVM Virtualization

Introduction Setting up set up centos stream 10 with kvm virtualization on a CentOS Stream 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Set Up CentOS Stream 10 with KVM Virtualization, with all the commands you need, the SELinux and firewalld considerations to […]

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