Backup Recovery

Common Problems 112466

Windows Server 2019 — WMI repository corruption causes service failures — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 12 June 2020 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 Audit Security with Lynis on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Audit Security with Lynis on FreeBSD 12

Introduction This guide explains how to Audit Security with Lynis on FreeBSD 12 on FreeBSD 12. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for fine-grained […]

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How to Set Up a FreeBSD Jail for Web Hosting on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Set Up a FreeBSD Jail for Web Hosting on FreeBSD 12 (FREEBSD-12-2)

Introduction How to Set Up a FreeBSD Jail for Web Hosting on FreeBSD 12 is a core administration task for any FreeBSD 12 server operator. FreeBSD 12 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service […]

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How to Configure Gitea Self-Hosted Git Service on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure Gitea Self-Hosted Git Service on Debian 10

Introduction Debian 10 Buster is built around the ethos of stability and free software. Setting up configure gitea self-hosted git service on debian 10 on Buster leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Buster freeze. Follow each step carefully […]

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Common Problems 120990

DNS Resolution Fails on Debian 10 Server

🟠 High   ⏱ 5–30 min  Last verified: 11 June 2020 Affected versions: Debian 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 119000

Ubuntu 14.04 LTS rsyslog Queue Backlog Fills Root Filesystem

🟠 High   ⏱ 5–30 min  Last verified: 11 June 2020 Affected versions: 14.04 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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How to Set Up MariaDB Replication on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Set Up MariaDB Replication on Debian 10

Introduction Deploying set up mariadb replication on debian 10 on a Debian 10 Buster 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 you […]

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Common Problems 119050

Ubuntu 14.04 LTS PHP-FPM Pool Exhaustion Causes 502 Errors

🟠 High   ⏱ 5–30 min  Last verified: 10 June 2020 Affected versions: 14.04 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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Gentoo Linux — app-backup/borgmatic — vulnerability — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — app-backup/borgmatic — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202405-13 Upstream summary: Prevent shell injection attacks within the PostgreSQL hook, the MongoDB hook, the SQLite hook, the "borgmatic borg" action, and command hook variable/constant interpolation. Table of contents Symptom & Impact […]

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How to Configure Docker Logging Drivers on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure Docker Logging Drivers on Debian 10

Introduction How to Configure Docker Logging Drivers on Debian 10 is a fundamental operation for any administrator maintaining a Debian 10 Buster server. Debian 10 Buster ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 10. […]

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