DNS

Debian 9 — bind9 — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Debian 9

Debian 9 — bind9 — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 28 June 2021 Affected versions: Debian 9 (stretch) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-3142 CVE-2017-3145 CVE-2018-5743 CVE-2020-8616 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches […]

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How to Install Docker Compose on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Install Docker Compose on FreeBSD 13

Introduction This guide explains how to Install Docker Compose 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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How to Configure PostgreSQL Remote Access on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Configure PostgreSQL Remote Access on FreeBSD 13

Introduction Deploying configure postgresql remote access on freebsd 13 on a FreeBSD 13 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 […]

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Common Problems 114993

RHEL 8 LVM thin pool reaches 100 percent and halts writes

🟡 Medium   ⏱ 5–30 min  Last verified: 26 June 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 Internal DNS with SDN on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure Internal DNS with SDN on Windows Server 2016

How to Set Up Windows Server 2016 Internal DNS Service The Internal DNS Service in Windows Server 2016 SDN provides name resolution capabilities for tenant virtual machines within their isolated virtual networks. In an SDN environment, tenant VMs cannot use the physical DNS servers directly without policy allowing that traffic, and they may have conflicting […]

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Common Problems 121568

Firewall Rules Blocking Internal Application Traffic

🟠 High   ⏱ 5–30 min  Last verified: 24 June 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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Common Problems 115117

Auditd Stops Logging Due to Disk Full Condition

🟡 Medium   ⏱ 5–30 min  Last verified: 24 June 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 112565

Windows Server 2019 — Windows Update Client reports package conflict between LCU and out-of-band fix — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 24 June 2021 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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Common Problems 117396

Ubuntu 20.04 LTS – apt lock prevents updates during maintenance windows – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 23 June 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 Jenkins Pipelines and Jenkinsfile on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Configure Jenkins Pipelines and Jenkinsfile on RHEL 7

How to Configure Jenkins Pipelines and Jenkinsfile on RHEL 7 Jenkins Pipelines transform your CI/CD process from a series of fragile, click-configured jobs into version-controlled, repeatable automation defined entirely in code. A Jenkinsfile lives alongside your application source, meaning every change to the build process goes through the same review workflow as application code. This […]

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