Logging Monitoring

Common Problems 118091

Ubuntu 18.04 Nginx 502 Bad Gateway with PHP-FPM

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

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Common Problems 115064

rsyslog Not Forwarding Logs to Central Collector

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

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How to Configure RAID with mdadm on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure RAID with mdadm on Debian 10

Introduction This guide explains how to Configure RAID with mdadm on Debian 10 on Debian 10 Buster. Debian Buster 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 10 install with the […]

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Common Problems 112949

Windows Server 2016 – Storage Replica initial sync never completes – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 8 August 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 […]

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IBM AIX 7.1 — CVE-2020-4675 — vulnerability — patch and remediation guide — diagnosis and fix on IBM AIX 7.1

IBM AIX 7.1 — CVE-2020-4675 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 15–45 min  Last verified: 8 August 2020 Affected versions: IBM AIX 7.1 📖 ~4 min read  •  Source: NVD CVE-2020-4675, IBM Support Bulletin CVE: CVE-2020-4675 NVD summary: IBM InfoSphere Master Data Management Server 11.6 is vulnerable to cross-site request forgery which could allow an attacker to execute malicious and unauthorized actions […]

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How to Set Up Uptime Monitoring with PRTG on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Set Up Uptime Monitoring with PRTG on Windows Server 2012 R2

How to Set Up Uptime Monitoring with PRTG on Windows Server 2012 R2 PRTG Network Monitor by Paessler is a widely deployed network and infrastructure monitoring platform that provides comprehensive uptime monitoring, performance metrics, and alerting for Windows Server 2012 R2 environments. PRTG uses a combination of ping checks, WMI queries, SNMP polling, and the […]

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FreeBSD 12 — mariadb105-server — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — mariadb105-server — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 8 August 2020 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: MariaDB — DoS vulnerability in InnoDB Related CVEs: CVE-2018-25032 CVE-2019-17543 CVE-2020-14672 CVE-2020-14760 CVE-2020-14765 CVE-2020-14769 CVE-2020-14771 CVE-2020-14773  +12 more Upstream summary: MariaDB reports: Easily exploitable vulnerability allows high privileged attacker with […]

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Gentoo Linux — net-p2p/bitcoin-qt — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — net-p2p/bitcoin-qt — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202009-18 Related CVEs: CVE-2019-15947 CVE-2020-14198 Upstream summary: Multiple vulnerabilities have been discovered in Bitcoin. Please review the CVE identifiers referenced below for details. Table of contents Symptom & Impact Environment & Reproduction […]

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How to Configure Remote Desktop Session Host on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Configure Remote Desktop Session Host on Windows Server 2019

How to Configure Remote Desktop Session Host on Windows Server 2019 Remote Desktop Session Host (RDSH) is the core component of a Windows Server 2019 Remote Desktop Services deployment that allows multiple users to connect simultaneously and run shared applications or full desktops in isolated sessions. Each user gets a private session with their own […]

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Common Problems 121501

Debian 9 – initramfs BusyBox Drop on Boot – Root Filesystem Recovery

🔴 Critical   ⏱ 5–30 min  Last verified: 7 August 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 & […]

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