Backup Recovery

Common Problems 112915

Windows Server 2016 – Kerberos KRB_AP_ERR_MODIFIED and SPN duplication – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 9 January 2021 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 Set Up Suricata IDS/IPS on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Up Suricata IDS/IPS on Oracle Linux 8

Introduction Oracle Linux 8 ships with a stable, security-hardened base that makes deploying set up suricata ids/ips on oracle linux 8 both straightforward and auditable. This tutorial covers the complete procedure for how to Set Up Suricata IDS/IPS on Oracle Linux 8, including dnf module streams where applicable, systemd unit management, and the firewalld rules […]

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How to Set Up WordPress with Apache2 on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up WordPress with Apache2 on Debian 9

Introduction Deploying set up wordpress with 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 throughout. Prerequisites Before […]

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Common Problems 118117

Ubuntu 18.04 LTS – cron jobs fail silently due to environment path mismatch – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 8 January 2021 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 […]

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Common Problems 112437

Windows Server 2019 – Hyper-V vmswitch driver fails to bind after NIC update – Fix and Prevention

🟠 High   ⏱ 5–30 min  Last verified: 8 January 2021 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 Custom Metrics with Prometheus on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Configure Custom Metrics with Prometheus on Oracle Linux 8

Introduction How to Configure Custom Metrics with Prometheus 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 […]

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Common Problems 115055

RHEL 8 auditd Backlog Limit Exceeded Messages

🟡 Medium   ⏱ 5–30 min  Last verified: 7 January 2021 📖 ~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 113479

Windows Server 2012 R2 – SmartScreen blocking unsigned internal installers – Fix & Prevention

🟢 Low   ⏱ 5–30 min  Last verified: 7 January 2021 Affected versions: Windows Server 2012 R2 📖 ~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 […]

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How to Set Up SSL VPN with OpenVPN on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Set Up SSL VPN with OpenVPN 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 set up ssl vpn with openvpn on ibm aix […]

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How to Deploy Applications with Helm on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Deploy Applications with Helm on Oracle Linux 8

Introduction This tutorial demonstrates how to Deploy Applications with Helm on Oracle Linux 8 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 the […]

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