Backup Recovery

Common Problems 113570

Windows Server 2012 R2 — AD orphaned object cleanup needed after failed domain controller removal — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 24 October 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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FreeBSD 13 — py36-borgbackup — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — py36-borgbackup — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 24 October 2021 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: borgbackup — remote users can override repository restrictions Related CVEs: CVE-2017-15914 Upstream summary: BorgBackup reports: Incorrect implementation of access controls allows remote users to override repository restrictions in Borg servers. […]

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How to Configure SSH Hardening on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Configure SSH Hardening on FreeBSD 13

Introduction This guide explains how to Configure SSH Hardening on FreeBSD 13 on FreeBSD 13. 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 privilege […]

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Common Problems 118446

Ubuntu 16.04 LTS – interface stays down after boot

🟠 High   ⏱ 5–30 min  Last verified: 23 October 2021 Affected versions: Ubuntu 16.04 LTS Ubuntu 16.04 Ubuntu 16.04.7 📖 ~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 […]

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Common Problems 117468

Ubuntu 20.04 LTS – /boot is full and kernel upgrades fail

🟠 High   ⏱ 5–30 min  Last verified: 23 October 2021 Affected versions: Ubuntu 20.04 LTS Ubuntu 20.04 Ubuntu 20.04.6 📖 ~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 […]

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How to Set Up iocage Jail Storage on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Set Up iocage Jail Storage on FreeBSD 13

Introduction How to Set Up iocage Jail Storage on FreeBSD 13 is a core administration task for any FreeBSD 13 server operator. FreeBSD 13 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 management, pf for […]

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Common Problems 113098

Windows Server 2016 – BitLocker boot-start filter driver delays startup – Fix and Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 23 October 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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Common Problems 112417

Windows Server 2019 – NIC RSS and VMQ driver mismatch causes packet loss – Fix and Prevention

🟠 High   ⏱ 5–30 min  Last verified: 23 October 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 Prometheus AlertManager on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Configure Prometheus AlertManager 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 configure prometheus alertmanager 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 Linux distribution. […]

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Common Problems 117540

Ubuntu 20.04 LTS SSH Public Key Login Fails

🟡 Medium   ⏱ 5–30 min  Last verified: 22 October 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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