Storage Disk

Common Problems 115456

RHEL 7 yum rpmdb Corruption Prevents Package Operations

🟠 High   ⏱ 5–30 min  Last verified: 18 January 2021 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 & […]

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Common Problems 125104

Oracle Linux 8 – Common Problem 014 – Diagnosis and Fix

🟡 Medium   ⏱ 5–30 min  Last verified: 16 January 2021 Affected versions: Oracle Linux 8 📖 ~3 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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How to Use AIX Object Data Manager (ODM) on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Use AIX Object Data Manager (ODM) 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 object data manager (odm) on ibm aix […]

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How to Run Docker on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Run Docker 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 run docker on ibm aix 7.2 on IBM AIX […]

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How to Configure Nagios NRPE Agent on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure Nagios NRPE Agent on Windows Server 2012 R2

How to Configure Nagios NRPE Agent on Windows Server 2012 R2 Nagios is one of the oldest and most widely deployed open-source infrastructure monitoring systems, and many organizations continue to rely on it for service and host monitoring. While Nagios traditionally monitored Windows servers via the NSClient++ agent, the NRPE (Nagios Remote Plugin Executor) protocol […]

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Common Problems 118630

Ubuntu 16.04 LTS GRUB update fails after manual disk layout changes

🔴 Critical   ⏱ 5–30 min  Last verified: 15 January 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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How to Configure VIO Server for LPAR Virtualization on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Configure VIO Server for LPAR Virtualization 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 configure vio server for lpar virtualization on ibm aix […]

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How to Schedule Tasks with Cron on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Schedule Tasks with Cron on Oracle Linux 8

Introduction How to Schedule Tasks with Cron 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 configuration […]

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Common Problems 115546

RHEL 7 journalctl Vacuum Not Configured in Long-Running Hosts

🟢 Low   ⏱ 5–30 min  Last verified: 14 January 2021 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 & […]

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How to Configure PowerShell DSC for Configuration Management on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure PowerShell DSC for Configuration Management on Windows Server 2012 R2

How to Configure PowerShell DSC for Configuration Management on Windows Server 2012 R2 PowerShell Desired State Configuration (DSC) is Microsoft’s built-in configuration management framework that allows you to define the intended state of a Windows system declaratively and have the system automatically enforce that state. On Windows Server 2012 R2, DSC is powered by the […]

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