Kernel Drivers

Common Problems 118956

Ubuntu 14.04 LTS – system boots into grub rescue prompt after update – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 3 September 2019 Affected versions: Ubuntu 14.04 LTS 📖 ~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 115020

Kernel panic after package update and reboot

🟡 Medium   ⏱ 5–30 min  Last verified: 3 September 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 & Cross-Refs References & Further […]

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How to Set Up Hyper-V on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Set Up Hyper-V on Windows Server 2012 R2

How to Set Up Hyper-V on Windows Server 2012 R2 Hyper-V is Microsoft’s Type-1 hypervisor, shipping as a role in Windows Server 2012 R2. It enables hardware virtualisation directly on the server, allowing you to run multiple virtual machines (VMs) with different operating systems on the same physical hardware. Windows Server 2012 R2 Hyper-V includes […]

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How to Build and Deploy a Go Web Application on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Build and Deploy a Go Web Application on RHEL 7

How to Build and Deploy a Go Web Application on RHEL 7 Go’s standard library includes a production-capable HTTP server in the net/http package. Unlike Java or Python, you do not need an external application server or framework to serve web traffic — the Go runtime handles it natively with impressive performance. This guide covers […]

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Common Problems 112601

Windows Server 2019 – Hyper-V VM networking packet loss caused by VMQ mismatch – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 2 September 2019 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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How to Configure Windows Server 2019 for Azure Hybrid Benefit — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Configure Windows Server 2019 for Azure Hybrid Benefit

How to Configure Windows Server 2019 for Azure Hybrid Benefit Azure Hybrid Benefit is a licensing benefit that allows organizations to use their existing on-premises Windows Server licenses with active Software Assurance (SA) to run Windows Server virtual machines on Azure at a reduced cost. For Windows Server 2019 environments, this benefit can dramatically reduce […]

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How to Configure Nginx Rate Limiting and Connection Throttling on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Configure Nginx Rate Limiting and Connection Throttling on RHEL 8

Rate limiting and connection throttling are essential defences against brute-force attacks, credential stuffing, and high-volume web scrapers. Nginx provides two built-in modules — ngx_http_limit_req_module for request-rate limiting and ngx_http_limit_conn_module for connection limiting — both compiled into the default binary. On RHEL 8 these capabilities are available immediately after installing Nginx from the AppStream module stream […]

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Common Problems 118551

Ubuntu 16.04 LTS – black screen after installing NVIDIA driver – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 30 August 2019 Affected versions: Ubuntu 16.04 LTS 📖 ~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 Database Backups with Automysqlbackup on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure Database Backups with Automysqlbackup on Debian 9

Introduction This guide explains how to Configure Database Backups with Automysqlbackup on Debian 9 on Debian 9 Stretch. Debian Stretch uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 9 install with […]

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How to Use IBM Performance Inspector on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Use IBM Performance Inspector 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 ibm performance inspector on ibm aix 7.2 on […]

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