DNS

Common Problems 115534

logrotate Not Rotating Large Logs

🟡 Medium   ⏱ 5–30 min  Last verified: 18 November 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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Common Problems 113466

Windows Server 2012 R2 – Display miniport TDR resets freeze RDP sessions – Fix and Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 16 November 2021 Affected versions: Windows Server 2012 R2 📖 ~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 […]

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Common Problems 112493

Windows Server 2019 — RRAS NAT translation table saturation causes outbound traffic drops during peak usage — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 16 November 2021 Affected versions: Windows Server 2019 📖 ~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 […]

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Common Problems 117514

Ubuntu 20.04 LTS UFW Blocks Required Service Ports

🟡 Medium   ⏱ 5–30 min  Last verified: 15 November 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 Use NSD, an Authoritative-Only DNS Server, on Ubuntu 14.04 — step-by-step Linux tutorial on Progressive Robot

How To Use NSD, an Authoritative-Only DNS Server, on Ubuntu 14.04

NSD is an authoritative-only DNS server that is optimized to serve zone information quickly and efficiently. While some other DNS solutions provide value through their flexibility, NSD focuses on doing one task extremely well. In this guide, we will demonstrate how to configure NSD to authoritatively serve a domain on two servers in a primary-secondary configuration. We will be using Ubuntu 14.04 as the host system.

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Common Problems 118084

Ubuntu 18.04 Docker permission denied on /var/run/docker.sock

🟡 Medium   ⏱ 5–30 min  Last verified: 14 November 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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Common Problems 113543

Windows Server 2012 R2 — Persistent static route disappears after reboot — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 14 November 2021 Affected versions: Windows Server 2012 R2 📖 ~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 […]

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How to Configure PgBouncer Connection Pooling on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Configure PgBouncer Connection Pooling 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 pgbouncer connection pooling 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 Automate FreeBSD 12 Server Provisioning with Ansible — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Automate FreeBSD 12 Server Provisioning with Ansible

Introduction This guide explains how to Automate FreeBSD 12 Server Provisioning with Ansible 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 […]

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Common Problems 125163

Oracle Linux 8 – Common Problem 020 – Diagnosis and Fix

🟠 High   ⏱ 5–30 min  Last verified: 12 November 2021 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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