DNS

How to Install InfluxDB and Telegraf on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Install InfluxDB and Telegraf 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 influxdb and telegraf 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 […]

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How to Secure Apache with Let's Encrypt and Certbot on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Secure Apache with Let’s Encrypt and Certbot on RHEL 7

How to Secure Apache with Let’s Encrypt and Certbot on RHEL 7 Running your Apache web server over plain HTTP exposes your users to traffic interception and degrades trust in modern browsers. Let’s Encrypt provides free, trusted TLS certificates that can be automated entirely on the command line. Certbot is the official Let’s Encrypt client […]

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How to Configure Windows Server 2019 Initial Settings — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Configure Windows Server 2019 Initial Settings

How to Configure Windows Server 2019 Initial Settings After installing Windows Server 2019, several initial configuration tasks must be completed before the server is ready for production use. This includes setting the hostname, assigning a static IP address, configuring the time zone, joining a domain, enabling remote management, and setting up basic security policies. Completing […]

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

How to Install ClamAV 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 clamav 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. This […]

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

How to Configure Redis Sentinel on FreeBSD 13

Introduction This guide explains how to Configure Redis Sentinel 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 117500

Ubuntu 20.04 LTS Excessive Swap Usage Causes Slowness

🟡 Medium   ⏱ 5–30 min  Last verified: 11 January 2022 📖 ~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 125093

Oracle Linux 8 – Common Problem 013 – Diagnosis and Fix

🟠 High   ⏱ 5–30 min  Last verified: 9 January 2022 Affected versions: Oracle Linux 8 📖 ~3 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 115003

RHEL 8 XFS filesystem remounts read-only after metadata error

🟡 Medium   ⏱ 5–30 min  Last verified: 9 January 2022 📖 ~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 112629

Windows Server 2019 — VSS snapshot creation fails during backup windows — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 9 January 2022 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 Node Exporter on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Configure Prometheus Node Exporter on FreeBSD 13

Introduction This guide explains how to Configure Prometheus Node Exporter 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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