Backup Recovery

How to Set Up an Oracle Linux 8 Template in VMware — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Up an Oracle Linux 8 Template in VMware

Introduction This tutorial demonstrates how to Set Up an Oracle Linux 8 Template in VMware on Oracle Linux 8. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered Oracle Linux 8 system with […]

Read more
How to Restore from mksysb Backup on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Restore from mksysb Backup 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 restore from mksysb backup on ibm aix 7.1 on […]

Read more
How to Configure Nginx as a Reverse Proxy for Apache2 on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure Nginx as a Reverse Proxy for Apache2 on Debian 9

Introduction Deploying configure nginx as a reverse proxy for apache2 on debian 9 on a Debian 9 Stretch machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path […]

Read more
Common Problems 121629

Debian 9 GRUB Update Fails After Package Changes

🟠 High   ⏱ 5–30 min  Last verified: 20 September 2020 Affected versions: Debian 9 📖 ~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
Common Problems 118485

Clock Drift and NTP Sync Problems on Ubuntu 16.04

🟡 Medium   ⏱ 5–30 min  Last verified: 20 September 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
Common Problems 118133

Ubuntu 18.04 LTS – DKMS module build fails after kernel update and drivers stop loading – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 20 September 2020 Affected versions: Ubuntu 18.04 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 […]

Read more
Common Problems 118038

Ubuntu 18.04 LTS – kernel update leaves system stuck on old version – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 20 September 2020 Affected versions: Ubuntu 18.04 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 […]

Read more
How to Set Up Snort IDS on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Up Snort IDS on Oracle Linux 8

Introduction How to Set Up Snort IDS 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 […]

Read more
Common Problems 115448

RHEL 7 Yum Locked by Another Process During Patch Window

🟡 Medium   ⏱ 5–30 min  Last verified: 20 September 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
Common Problems 112899

Windows Server 2016 – Hyper-V Replica enters critical state after network interruption – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 19 September 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
CHAT