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How to Configure Harbor Container Registry on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Configure Harbor Container Registry on SLES 12

Introduction This tutorial covers How to Configure Harbor Container Registry on SLES 12 on SLES 12. SLES 12 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 12 system is up to date: zypper […]

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FreeBSD 12 — sympa — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — sympa — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: sympa — Inappropriate use of the cookie parameter can be a security threat. This parameter may also not provide sufficient security. Related CVEs: CVE-2005-0073 CVE-2012-2352 CVE-2015-1306 CVE-2020-29668 CVE-2020-9369 Upstream summary: […]

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Common Problems 114138

RHEL 10 sudo Access Lost Due to Syntax Error in sudoers Configuration

🔴 Critical   ⏱ 5–30 min  Last verified: 20 May 2026 Affected versions: RHEL 10 📖 ~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 113913

RHEL 10 – firewalld rich rule not applied after reload – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: RHEL 10 📖 ~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 112570

Windows Server 2019 Tiered Storage Spaces Not Rebalancing Hot Data Correctly – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 19 May 2026 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 12 — icingaweb — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — icingaweb — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Icinga Web 2 — directory traversal vulnerability Related CVEs: CVE-2020-24368 Upstream summary: Icinga development team reports: CVE-2020-24368 Icinga Icinga Web2 2.0.0 through 2.6.4, 2.7.4 and 2.8.2 has a Directory Traversal […]

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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 Install Ruby on Rails on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Install Ruby on Rails on Oracle Linux 8

Introduction This tutorial demonstrates how to Install Ruby on Rails 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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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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