Troubleshooting

Common Problems 121658

Docker Containers Cannot Reach Internet

🟠 High   ⏱ 5–30 min  Last verified: 13 October 2020 Affected versions: Debian 9 📖 ~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 119087

Ubuntu 14.04 LTS – Apache fails to start because port 80 is in use

🟠 High   ⏱ 5–30 min  Last verified: 13 October 2020 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 118967

Networking Service Fails to Start with ifupdown on Ubuntu 14.04

🟡 Medium   ⏱ 5–30 min  Last verified: 13 October 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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IBM AIX 7.1 — CVE-2020-4406 — vulnerability — patch and remediation guide — diagnosis and fix on IBM AIX 7.1

IBM AIX 7.1 — CVE-2020-4406 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 15–45 min  Last verified: 13 October 2020 Affected versions: IBM AIX 7.1 📖 ~4 min read  •  Source: NVD CVE-2020-4406, IBM Support Bulletin CVE: CVE-2020-4406 NVD summary: IBM Spectrum Protect Client 8.1.7.0 through 8.1.9.1 (Linux and Windows), 8.1.9.0 trough 8.1.9.1 (AIX) and IBM Spectrum Protect for Space Management 8.1.7.0 through 8.1.9.1 […]

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How to Install GitHub Actions Runner on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Install GitHub Actions Runner on Oracle Linux 8

Introduction Setting up install github actions runner on oracle linux 8 on a Oracle Linux 8 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Install GitHub Actions Runner on Oracle Linux 8, with all the commands you need, the SELinux and firewalld considerations to […]

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Common Problems 113503

Windows Server 2012 R2 — DNS resolution times out for external hosts — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 13 October 2020 Affected versions: Windows Server 2012 R2 📖 ~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 […]

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How to Set Up Bacula Client on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Set Up Bacula Client on IBM AIX 7.2

Introduction IBM AIX 7.2 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 7.2 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to set up bacula client on ibm aix 7.2 on […]

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Arch Linux — podman — vulnerability — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — podman — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202009-11 Related CVEs: CVE-2020-14370 Upstream summary: Type: information disclosure. Status: Fixed. Affected: 2.0.6-1. Fixed in: 2.1.0-1. Group: AVG-1233. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]

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How to Set Up SSL/TLS Certificates on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Set Up SSL/TLS Certificates on IBM AIX 7.2

Introduction IBM AIX 7.2 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 7.2 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to set up ssl/tls certificates on ibm aix 7.2 on […]

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Ubuntu 16.04 — jquery — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — jquery — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 13 October 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-7622-1 Related CVEs: CVE-2020-11023 CVE-2019-11358 CVE-2020-11022 CVE-2012-6708 Upstream summary: It was discovered that jQuery did not correctly handle HTML tags. An attacker could possibly use this issue to execute a […]

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