Operations

How to Set Up Hyper-V Discrete Device Assignment on Windows Server 2022 — step-by-step Windows Server 2022 tutorial on Progressive Robot

How to Set Up Hyper-V Discrete Device Assignment on Windows Server 2022

Introduction to Hyper-V Replica Hyper-V Replica is an asynchronous replication feature built into Windows Server 2022 Hyper-V that continuously replicates virtual machine changes from a primary server to a replica server, providing disaster recovery capability without requiring shared storage or expensive SAN replication hardware. Changes made to a VM’s virtual hard disks on the primary […]

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Common Problems 118098

Ubuntu 18.04 Netplan Configuration Ignored on Boot

🟡 Medium   ⏱ 5–30 min  Last verified: 13 January 2023 📖 ~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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IBM AIX 7.3 — CVE-2021-39087 — vulnerability — patch and remediation guide — diagnosis and fix on IBM AIX 7.3

IBM AIX 7.3 — CVE-2021-39087 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 15–45 min  Last verified: 13 January 2023 Affected versions: IBM AIX 7.3 📖 ~4 min read  •  Source: NVD CVE-2021-39087, IBM Support Bulletin CVE: CVE-2021-39087 NVD summary: IBM Sterling B2B Integrator Standard Edition 6.0.0.0 through 6.0.3.5, 6.1.0.0 through 6.1.0.4, and 6.1.1.0 through 6.1.1.1 could allow an authenticated user to obtain sensitive […]

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Common Problems 114614

RHEL 9: MariaDB Fails to Start After Package Update

🟡 Medium   ⏱ 5–30 min  Last verified: 13 January 2023 📖 ~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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Common Problems 112981

Windows Server 2016 — Update Scan Fails with 0x8024402c Due to Proxy Misconfiguration — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 13 January 2023 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 […]

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How to Use IBM FlashSystem with AIX on IBM AIX 7.3 — step-by-step IBM AIX 7.3 tutorial on Progressive Robot

How to Use IBM FlashSystem with AIX on IBM AIX 7.3

Introduction IBM AIX 7.3 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 7.3 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to use ibm flashsystem with aix on IBM AIX 7.3 […]

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Common Problems 112637

Windows Server 2019 — Host Compute Service fails preventing Windows containers — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 13 January 2023 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 […]

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FreeBSD 13 — mat — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — mat — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 13 January 2023 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: mat2 — directory traversal/arbitrary file read during ZIP file processing Related CVEs: CVE-2022-35410 Upstream summary: mat2 (aka metadata anonymisation toolkit) before 0.13.0 allows ../ directory traversal during the ZIP archive […]

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Common Problems 111661

Windows Server 2022 — Application Pool recycling too frequently causing session state loss on IIS — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 13 January 2023 Affected versions: Windows Server 2022 📖 ~2 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 Add and Remove Windows Server Roles and Features on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Add and Remove Windows Server Roles and Features on Windows Server 2012 R2

Introduction Windows Server 2012 R2 uses a role-based architecture where specific services are added as “Server Roles” (major features like IIS, AD DS, DHCP) and “Features” (supporting components like .NET Framework, RSAT). PowerShell’s Server Manager module provides complete programmatic control over role and feature installation, making it possible to automate server configuration with precise reproducibility. […]

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