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

How to Configure auditd on FreeBSD 13

Introduction How to Configure auditd 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 packet filtering, and […]

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Common Problems 118405

E: Unable to Locate Package on Ubuntu 16.04

🟡 Medium   ⏱ 5–30 min  Last verified: 29 July 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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How to Install MongoDB on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Install MongoDB 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 install mongodb 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. This […]

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Common Problems 118099

Ubuntu 18.04 LTS Kernel Panic After Security Update

🔴 Critical   ⏱ 5–30 min  Last verified: 29 July 2021 Affected versions: 18.04 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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Common Problems 118008

Ubuntu 18.04 LTS – ext4 filesystem remounts read-only after I/O errors – Fix & Prevention

🔴 Critical   ⏱ 5–30 min  Last verified: 29 July 2021 Affected versions: Ubuntu 18.04 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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Common Problems 115019

RHEL 8 – DNF Module Stream Conflict Blocks App Installation

🟡 Medium   ⏱ 5–30 min  Last verified: 29 July 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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How to Configure Hyper-V Storage for VMs on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure Hyper-V Storage for VMs on Windows Server 2012 R2

How to Configure Hyper-V Storage for VMs on Windows Server 2012 R2 Storage configuration is one of the most critical aspects of Hyper-V performance and reliability. Windows Server 2012 R2 Hyper-V supports multiple storage types, including locally attached SATA/SAS drives, iSCSI SANs, Fibre Channel, SMB 3.0 file shares, and pass-through disks. Understanding how to optimally […]

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Common Problems 119012

Ubuntu 14.04 LTS cron jobs stop executing on schedule

🟡 Medium   ⏱ 5–30 min  Last verified: 28 July 2021 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 Harden PHP on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Harden PHP on FreeBSD 13

Introduction This guide explains how to Harden PHP 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 separation. […]

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Common Problems 121623

Debian 9: UFW blocks required application ports

🟡 Medium   ⏱ 5–30 min  Last verified: 27 July 2021 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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