ubuntu

Common Problems 116524

Ubuntu 24.04 LTS – UFW reload unexpectedly blocks SSH access

🔴 Critical   ⏱ 5–30 min  Last verified: 3 January 2025 Affected versions: Ubuntu 24.04 LTS Ubuntu 24.04 Ubuntu 24.04.1 📖 ~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 116476

Ubuntu 24.04 LTS – Docker service fails to start after daemon.json edit – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 3 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 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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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 Software RAID with mdadm on Ubuntu 24.04 — step-by-step Linux tutorial on Progressive Robot

How to Install Prometheus and Grafana on Ubuntu 24.04

Prometheus is a powerful time-series monitoring system and Grafana is the leading visualisation dashboard. Together they form the most popular open-source monitoring stack. This guide installs both on Ubuntu 24.04 LTS. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server A user with sudo privileges Minimum 2 GB RAM Step 1 – […]

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Ubuntu 24.04 — ceph — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 24.04

Ubuntu 24.04 — ceph — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 2 January 2025 Affected versions: Ubuntu 24.04 (noble) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8045-1 Related CVEs: CVE-2024-31884 CVE-2024-47866 CVE-2024-48916 Upstream summary: Martin Schobert discovered that Ceph did not properly verify SSL certificates when using Pybind for secure mail connections, which could result in […]

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How to Secure MySQL 8.0 on Ubuntu 24.04 — step-by-step Linux tutorial on Progressive Robot

How to Install phpMyAdmin on Ubuntu 24.04

phpMyAdmin is a free web-based interface for managing MySQL/MariaDB databases. This guide installs phpMyAdmin on Ubuntu 24.04 LTS with Nginx and PHP 8.3. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server Nginx, MySQL, PHP 8.3-FPM installed A user with sudo privileges Step 1 – Install phpMyAdmin Install from the Ubuntu repository: […]

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Ubuntu 22.04 — requests — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — requests — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 2 January 2025 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7568-1 Related CVEs: CVE-2024-47081 CVE-2023-32681 Upstream summary: Dennis Brinkrolf and Tobias Funke discovered that Requests did not correctly handle certain HTTP headers. A remote attacker could possibly use this issue […]

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