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

How to Configure Jenkins Pipelines on FreeBSD 13

Introduction How to Configure Jenkins Pipelines 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, […]

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Common Problems 114908

RHEL 8 RPM Database Locked During Automated Updates

🟡 Medium   ⏱ 5–30 min  Last verified: 3 November 2021 📖 ~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 Errors & Cross-Refs References & Further […]

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How to Install Nagios Core on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Install Nagios Core on FreeBSD 12

Introduction FreeBSD 12 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up install nagios core on freebsd 12 on FreeBSD 12 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 113055

Windows Server 2016 – Security event log overflow causing dropped audit events – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 2 November 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 121603

Debian 9: Docker daemon fails after kernel or cgroup changes

🟠 High   ⏱ 5–30 min  Last verified: 1 November 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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How to Monitor MySQL with Prometheus on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Monitor MySQL with Prometheus on FreeBSD 13

Introduction This guide explains how to Monitor MySQL with Prometheus 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 […]

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Common Problems 117537

Ubuntu 20.04 LTS – kernel update leaves system stuck on old version – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 1 November 2021 Affected versions: Ubuntu 20.04 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 Configure Windows Server 2019 Windows Containers — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Configure Windows Server 2019 Windows Containers

How to Configure Windows Server 2019 Windows Containers Windows Containers are a lightweight virtualization technology in Windows Server 2019 that package applications and their dependencies into isolated units. Unlike Hyper-V containers, Windows containers share the host OS kernel, making them faster to start and more resource-efficient. They are fully compatible with Docker tooling and can […]

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How to Export and Import Hyper-V Virtual Machines on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Export and Import Hyper-V Virtual Machines on Windows Server 2012 R2

How to Export and Import Hyper-V Virtual Machines on Windows Server 2012 R2 Exporting and importing virtual machines is a fundamental Hyper-V administrative skill used for VM backup, migration between hosts, cloning, and archiving. Windows Server 2012 R2 significantly improved the export and import workflow compared to previous versions — exports now occur without needing […]

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

How to Configure Samba 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 samba 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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