DNS

Common Problems 114995

Cockpit Web Console Not Reachable on Port 9090

🟡 Medium   ⏱ 5–30 min  Last verified: 4 October 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 112598

Windows Server 2019 — Update History Appears Empty After Datastore Reset Confusing Compliance — Fix & Prevention

🟢 Low   ⏱ 5–30 min  Last verified: 4 October 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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How to Configure Apache Virtual Hosts on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Configure Apache Virtual Hosts on RHEL 7

How to Configure Apache Virtual Hosts on RHEL 7 Apache virtual hosts allow a single Apache HTTP Server instance to serve multiple websites on the same server, distinguishing between sites based on the incoming domain name (name-based virtual hosting) or IP address. This is the standard approach for hosting multiple websites on a shared server. […]

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Common Problems 117438

Ubuntu 20.04 LTS – apt update returns 404 Not Found for package indexes

🟡 Medium   ⏱ 5–30 min  Last verified: 3 October 2021 Affected versions: Ubuntu 20.04 LTS Ubuntu 20.04 Ubuntu 20.04.6 📖 ~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 […]

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Ubuntu 20.04 — ldns — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — ldns — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 3 October 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5257-2 Related CVEs: CVE-2020-19860 CVE-2020-19861 Upstream summary: USN-5257-1 fixed several vulnerabilities in ldns. This update provides the corresponding update for Ubuntu 20.04 ESM and Ubuntu 22.04 ESM. Original advisory details: […]

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Common Problems 115469

RHEL 7 SSH login denied due to key permissions and SELinux context

🟠 High   ⏱ 5–30 min  Last verified: 3 October 2021 Affected versions: RHEL 7 📖 ~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 115138

Cockpit Web Console Unreachable on Port 9090 – RHEL 8 Post 169

🟡 Medium   ⏱ 5–30 min  Last verified: 2 October 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 113561

Windows Server 2012 R2 — NPS service not processing RADIUS requests — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 2 October 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 113478

Windows Server 2012 R2 — SoftwareDistribution Corruption Causes Endless Update Retry Loop — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 2 October 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 Install Terraform on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Install Terraform on FreeBSD 12

Introduction How to Install Terraform on FreeBSD 12 is a core administration task for any FreeBSD 12 server operator. FreeBSD 12 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, and […]

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