Logging Monitoring

Common Problems 117623

OOM Kills Java Process Under Load

🔴 Critical   ⏱ 5–30 min  Last verified: 4 August 2021 Affected versions: 20.04 📖 ~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 […]

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Common Problems 115586

RHEL 7 firewalld Masquerade Disabled on NAT Gateway

🟠 High   ⏱ 5–30 min  Last verified: 4 August 2021 Affected versions: RHEL 7 📖 ~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 ArgoCD on Kubernetes on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Set Up ArgoCD on Kubernetes on FreeBSD 13

Introduction FreeBSD 13 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up set up argocd on kubernetes on freebsd 13 on FreeBSD 13 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from any […]

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AlmaLinux 8 — dbxtool — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — dbxtool — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2021:0564 Upstream summary: The dbxtool packages provide a command line utility and a one-shot systemd service for applying UEFI Secure Boot DBX updates. Bug Fix(es) and Enhancement(s): * [Dell AlmaLinux 8.2 BUG] […]

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Common Problems 113527

Windows Server 2012 R2 — App-V streamed package fails to launch with publishing refresh error — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 4 August 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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Arch Linux — rizin — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — rizin — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202204-4 Related CVEs: CVE-2021-43814 CVE-2021-4022 Upstream summary: Type: multiple issues. Status: Fixed. Affected: 0.3.1-1. Fixed in: 0.3.2-1. Group: AVG-2590. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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Common Problems 113391

Windows Server 2012 R2 — AD user login fails with bad username/password despite correct credentials — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 4 August 2021 Affected versions: Windows Server 2012 R2 📖 ~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 […]

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How to Configure Oracle RAC on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Configure Oracle RAC 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 configure oracle rac on ibm aix 7.2 on IBM […]

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FreeBSD 13 — yamt — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — yamt — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 4 August 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: yamt — buffer overflow and directory traversal issues Related CVEs: CVE-2004-1302 CVE-2005-1846 CVE-2005-1847 Upstream summary: Stanislav Brabec discovered errors in yamt's path name handling that lead to buffer overflows and […]

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