Backup Recovery

How to Set Up ClamAV Antivirus on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Set Up ClamAV Antivirus on Oracle Linux 9

Introduction Setting up set up clamav antivirus on oracle linux 9 on a Oracle Linux 9 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Set Up ClamAV Antivirus on Oracle Linux 9, with all the commands you need, the SELinux and firewalld considerations to […]

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

How to Install OpenVPN on FreeBSD 12

Introduction Deploying install openvpn on freebsd 12 on a FreeBSD 12 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays entirely within the standard base + […]

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Common Problems 117401

Ubuntu 20.04 LTS DNS Resolution Fails Intermittently

🟡 Medium   ⏱ 5–30 min  Last verified: 10 March 2023 Affected versions: 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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Common Problems 112926

Windows Server 2016 SMB File Server Latency Spikes During Backup Window – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 10 March 2023 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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How to Enable Brotli Compression in Nginx on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Enable Brotli Compression in Nginx on Oracle Linux 9

Introduction This tutorial demonstrates how to Enable Brotli Compression in Nginx on Oracle Linux 9 on Oracle Linux 9. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered Oracle Linux 9 system with […]

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Common Problems 111824

Windows Server 2022 — Azure Arc onboarding fails behind proxy with TLS inspection — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 10 March 2023 Affected versions: Windows Server 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 […]

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How to Configure NTP Time Synchronization on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Configure NTP Time Synchronization 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 configure ntp time synchronization 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 […]

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Common Problems 111826

Windows Server 2022 – WinRM Kerberos double-hop fails in remoting workflows – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 9 March 2023 Affected versions: Windows Server 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 […]

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How to Configure a Virtual Host in Nginx on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Configure a Virtual Host in Nginx on Oracle Linux 9

Introduction This tutorial demonstrates how to Configure a Virtual Host in Nginx on Oracle Linux 9 on Oracle Linux 9. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered Oracle Linux 9 system […]

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How to Configure Suricata IDS on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Configure Suricata IDS on FreeBSD 12

Introduction This guide explains how to Configure Suricata IDS 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 privilege […]

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