Troubleshooting

Common Problems 117515

Docker Permission Denied on /var/run/docker.sock

🟡 Medium   ⏱ 5–30 min  Last verified: 15 December 2020 Affected versions: 20.04 📖 ~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 […]

Read more
Common Problems 112521

Windows Server 2019 – Hyper-V checkpoint merge stuck with AVHDX growth – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 15 December 2020 Affected versions: Windows Server 2019 📖 ~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 […]

Read more
How to Secure MySQL on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Secure MySQL on Oracle Linux 8

Introduction Oracle Linux 8 ships with a stable, security-hardened base that makes deploying secure mysql on oracle linux 8 both straightforward and auditable. This tutorial covers the complete procedure for how to Secure MySQL on Oracle Linux 8, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for network-facing services. […]

Read more
How to Configure Network Authentication Service on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Configure Network Authentication Service on IBM AIX 7.1

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 network authentication service on ibm aix 7.1 on […]

Read more
How to Configure Hyper-V Dynamic Memory on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure Hyper-V Dynamic Memory on Windows Server 2012 R2

How to Configure Hyper-V Dynamic Memory on Windows Server 2012 R2 Hyper-V Dynamic Memory is a feature that allows the hypervisor to dynamically adjust the amount of physical RAM allocated to each virtual machine based on actual workload demand. Instead of statically reserving a fixed amount of memory for each VM — even when that […]

Read more
How to Configure Scheduled Tasks with PowerShell on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure Scheduled Tasks with PowerShell on Windows Server 2012 R2

How to Configure Scheduled Tasks with PowerShell on Windows Server 2012 R2 While the Task Scheduler MMC console provides a GUI for managing scheduled tasks, PowerShell’s ScheduledTasks module on Windows Server 2012 R2 offers superior capabilities for automating task creation, modification, bulk management, and deployment across server estates. The PowerShell approach is version-controllable, repeatable, and […]

Read more
How to Set Up Remote Desktop Printer Redirection on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Set Up Remote Desktop Printer Redirection on Windows Server 2019

How to Set Up Remote Desktop Printer Redirection on Windows Server 2019 Remote Desktop printer redirection allows users connecting to an RD Session Host on Windows Server 2019 to print from within their remote session to printers attached to their local client computer. Without printer redirection, RDS users can only print to printers that are […]

Read more
Oracle Linux 8 — kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — kernel — vulnerability — patch and remediation guide (ELSA-2019-3832)

🟠 High   ⏱ 15–60 min  Last verified: 15 December 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-3832 Related CVEs: CVE-2018-12207 CVE-2019-11135 CVE-2019-0154 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]

Read more
Oracle Linux 8 — qt5-qtbase — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — qt5-qtbase — security and stability fixes — required update (ELSA-2019-3390)

🟡 Medium   ⏱ 10–30 min  Last verified: 14 December 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-3390 Related CVEs: CVE-2018-15518 CVE-2018-19870 CVE-2018-19873 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]

Read more
Common Problems 118007

Ubuntu 18.04 High CPU from Runaway systemd Service

🟡 Medium   ⏱ 5–30 min  Last verified: 14 December 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 […]

Read more
CHAT