Troubleshooting

Oracle Linux 8 — container-tools:ol8 security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2020-4694)

• February 26, 2021
• Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 26 February 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4694 Related CVEs: CVE-2020-10749 CVE-2020-10756 CVE-2020-14040 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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Ubuntu 14.04 LTS – NTP sync fails and system clock drifts

• February 26, 2021
• Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 26 February 2021 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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Ubuntu 18.04 Wi-Fi Adapter Not Detected After Reboot

• February 26, 2021
• Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 26 February 2021 📖 ~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 Configure ArgoCD on Oracle Linux 8

• February 26, 2021
• Oracle Linux
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Introduction Setting up configure argocd 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 Configure ArgoCD on Oracle Linux 8, with all the commands you need, the SELinux and firewalld considerations to keep in mind, and […]

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Ubuntu 20.04 — tidy-html5 — vulnerability — patch and remediation guide

• February 26, 2021
• Linux
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🟢 Low   ⏱ 5–15 min  Last verified: 26 February 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6483-1 Related CVEs: CVE-2021-33391 Upstream summary: Neeraj Pal discovered that HTML Tidy incorrectly handled parsing certain HTML data. If a user or automated system were tricked into parsing specially crafted […]

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openSUSE Tumbleweed — ncat — multiple vulnerabilities (3 CVEs) — patch and remediation guide

• February 26, 2021
• Linux
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🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2019:2198-1 (see also SUSE bugzilla) Related CVEs: CVE-2017-18594 CVE-2018-15173 CVE-2021-3712 Upstream summary: nse_libssh2.cc in Nmap 7.70 is subject to a denial of service condition due to a double free when an SSH […]

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How to Configure GNU Make on IBM AIX 7.1

• February 26, 2021
• IBM AIX
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Introduction IBM AIX 7.1 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 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure gnu make on ibm aix 7.1 on IBM […]

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How to Use AIX Backup and Restore (tar, cpio) on IBM AIX 7.2

• February 26, 2021
• IBM AIX
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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 use aix backup and restore (tar, cpio) on ibm […]

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How to Set Up Remote Desktop Connection Broker on Windows Server 2019

• February 26, 2021
• Tutorials
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How to Set Up Remote Desktop Connection Broker on Windows Server 2019 The Remote Desktop Connection Broker (RD Connection Broker) is a role service in Windows Server 2019 that manages user connections in a Remote Desktop Services deployment. It routes users to the least-loaded RD Session Host in a session collection, reconnects users to their […]

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Arch Linux — netbeans — vulnerability — patch and remediation guide

• February 26, 2021
• Linux
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🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202009-7 Related CVEs: CVE-2020-11986 Upstream summary: Type: arbitrary code execution. Status: Fixed. Affected: 12.0-1. Fixed in: 12.0_u1-1. Group: AVG-1221. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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