Troubleshooting

Common Problems 118614

Ubuntu 16.04 LTS PAM misconfiguration locks out local console login

🔴 Critical   ⏱ 5–30 min  Last verified: 1 April 2021 Affected versions: 16.04 📖 ~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 […]

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Common Problems 115127

RHEL 8 dracut Initramfs Missing Driver After Storage Migration

🟡 Medium   ⏱ 5–30 min  Last verified: 1 April 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 Manage Systemd Services on SLES 15 — step-by-step SUSE Linux Enterprise 15 tutorial on Progressive Robot

How to Manage Systemd Services on SLES 15

Introduction This tutorial covers How to Manage Systemd Services on SLES 15 on SLES 15. SLES 15 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 15 system is up to date: zypper refresh […]

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

Arch Linux — dino — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202107-35 Related CVEs: CVE-2021-33896 Upstream summary: Type: directory traversal. Status: Fixed. Affected: 0.2.0-3. Fixed in: 0.2.1-1. Group: AVG-2043. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]

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How to Configure Oracle Linux 8 in Azure — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Configure Oracle Linux 8 in Azure

Introduction This tutorial demonstrates how to Configure Oracle Linux 8 in Azure on Oracle Linux 8. 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 Oracle Linux 8 system with the default AppStream […]

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Arch Linux — grafana-agent — vulnerability — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — grafana-agent — 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-202112-12 Related CVEs: CVE-2021-41090 Upstream summary: Type: information disclosure. Status: Fixed. Affected: 0.21.0-1. Fixed in: 0.21.2-1. Group: AVG-2614. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis […]

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Oracle Linux 8 — spice — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — spice — vulnerability — patch and remediation guide (ELSA-2021-1924)

🟢 Low   ⏱ 5–15 min  Last verified: 1 April 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-1924 Related CVEs: CVE-2021-20201 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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Arch Linux — tensorflow — multiple vulnerabilities (6 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — tensorflow — multiple vulnerabilities (6 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202012-22 Related CVEs: CVE-2020-26271 CVE-2020-26270 CVE-2020-26269 CVE-2020-26268 CVE-2020-26267 CVE-2020-26266 Upstream summary: Type: multiple issues. Status: Fixed. Affected: 2.4.0rc4-2. Fixed in: 2.4.0-1. Group: AVG-1348. Table of contents Symptom & Impact Environment […]

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How to Configure Task Scheduler on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure Task Scheduler on Windows Server 2016

How to Set Up Windows Server 2016 Task Scheduler Task Scheduler is one of the most widely used built-in tools in Windows Server 2016. It allows administrators to automate the execution of programs, scripts, and maintenance operations based on time triggers, system events, logon activity, and many other conditions. Properly configured scheduled tasks eliminate the […]

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