Troubleshooting

Common Problems 115585

RHEL 7 GRUB2 Rescue Prompt After Disk Clone

🔴 Critical   ⏱ 5–30 min  Last verified: 1 October 2020 Affected versions: RHEL 7 📖 ~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
IBM AIX 7.1 — CVE-2020-4365 — vulnerability — patch and remediation guide — diagnosis and fix on IBM AIX 7.1

IBM AIX 7.1 — CVE-2020-4365 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 15–45 min  Last verified: 1 October 2020 Affected versions: IBM AIX 7.1 📖 ~4 min read  •  Source: NVD CVE-2020-4365, IBM Support Bulletin CVE: CVE-2020-4365 NVD summary: IBM WebSphere Application Server 8.5 is vulnerable to server-side request forgery. By sending a specially crafted request, a remote authenticated attacker could exploit this […]

Read more
How to Set Up NFS High Availability on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Up NFS High Availability on Oracle Linux 8

Introduction How to Set Up NFS High Availability on Oracle Linux 8 on Oracle Linux 8 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting […]

Read more
Common Problems 112948

Windows Server 2016 – NVMe stornvme timeout storms trigger disk failover – Fix and Prevention

🟠 High   ⏱ 5–30 min  Last verified: 1 October 2020 Affected versions: Windows Server 2016 📖 ~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 Use AIX Enterprise Identity Mapping (EIM) on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Use AIX Enterprise Identity Mapping (EIM) 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 use aix enterprise identity mapping (eim) on ibm aix […]

Read more
How to Apply LTSC Updates and Servicing on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Apply LTSC Updates and Servicing on Windows Server 2016

Introduction Windows Server 2016 follows the Long-Term Servicing Channel (LTSC), receiving cumulative security and reliability updates monthly. Understanding the update model and using PowerShell and WSUS for update management ensures servers remain secure and stable throughout the support lifecycle. Checking Current Update Status Verify installed updates and pending patches: Get-HotFix | Sort-Object InstalledOn -Descending | […]

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

Oracle Linux 8 — thunderbird — vulnerability — patch and remediation guide (ELSA-2019-4195)

🟠 High   ⏱ 15–60 min  Last verified: 1 October 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-4195 Related CVEs: CVE-2019-17011 CVE-2019-17012 CVE-2019-17005 CVE-2019-17010 CVE-2019-17008 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

Read more
How to Install and Use Podman with systemd Socket Activation on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install and Use Podman with systemd Socket Activation on RHEL 7

How to Install and Use Podman with systemd Socket Activation on RHEL 7 Podman is a daemonless container engine developed by Red Hat that provides a Docker-compatible CLI while operating without a central privileged daemon. On RHEL 7, Podman integrates deeply with systemd, enabling containers to be managed as first-class system services, started on-demand via […]

Read more
Oracle Linux 8 — gnutls security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — gnutls security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2025-17415)

🟡 Medium   ⏱ 10–30 min  Last verified: 30 September 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-17415 Related CVEs: CVE-2025-32990 CVE-2025-6395 CVE-2025-32988 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 118025

Ubuntu 18.04 LTS – snapd services fail and snap apps do not launch

🟡 Medium   ⏱ 5–30 min  Last verified: 30 September 2020 Affected versions: Ubuntu 18.04 LTS Ubuntu 18.04 Ubuntu 18.04.6 📖 ~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 […]

Read more
CHAT