Operations

Common Problems 114553

RHEL 9 NetworkManager profile changes not persisting

🟡 Medium   ⏱ 5–30 min  Last verified: 23 January 2023 📖 ~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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Ubuntu 16.04 — rsyslog — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — rsyslog — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 23 January 2023 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5404-2 Related CVEs: CVE-2022-24903 CVE-2018-16881 CVE-2019-17041 CVE-2019-17042 Upstream summary: USN-5404-1 addressed a vulnerability in Rsyslog. This update provides the corresponding update for Ubuntu 16.04 ESM. Original advisory details: Pieter Agten […]

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Ubuntu 18.04 — nautilus — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — nautilus — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 23 January 2023 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5786-1 Related CVEs: CVE-2022-37290 Upstream summary: It was discovered that GNOME Files incorrectly handled certain filenames. An attacker could possibly use this issue to cause GNOME Files to crash, leading […]

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Oracle Linux 8 — httpd:2.4 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — httpd:2.4 — vulnerability — patch and remediation guide (ELSA-2023-1673)

🟠 High   ⏱ 15–60 min  Last verified: 23 January 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-1673 Related CVEs: CVE-2023-25690 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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Gentoo Linux — www-servers/lighttpd — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — www-servers/lighttpd — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202210-12 Related CVEs: CVE-2022-37797 CVE-2022-41556 Upstream summary: Lighttpd's mod_wstunnel does not initialize a handler function pointer if an invalid HTTP request (websocket handshake) is received. Table of contents Symptom & Impact Environment […]

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Oracle Linux 8 — kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — kernel — vulnerability — patch and remediation guide (ELSA-2025-8743)

🟡 Medium   ⏱ 10–30 min  Last verified: 23 January 2023 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-8743 Related CVEs: CVE-2022-49395 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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Oracle Linux 9 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2022-9590)

🟠 High   ⏱ 15–60 min  Last verified: 23 January 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-9590 Related CVEs: CVE-2022-29901 CVE-2022-23816 CVE-2022-1652 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]

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How to Set Up Windows Server Failover Cluster (WSFC) with SQL Server on Windows Server 2022 — Windows Server 2022 tutorial on Progressive Robot

How to Set Up Windows Server Failover Cluster (WSFC) with SQL Server on Windows Server 2022

Introduction to Windows Server Failover Clustering with SQL Server Windows Server Failover Clustering (WSFC) combined with SQL Server Failover Cluster Instances (FCI) is one of the oldest and most battle-tested high-availability solutions for SQL Server workloads. Unlike Always On Availability Groups, which replicate data between nodes, a Failover Cluster Instance presents SQL Server as a […]

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Windows Server 2016 — KB5028240 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Windows Server 2016

Windows Server 2016 — KB5028240 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: Windows Server 2016 📖 ~4 min read  •  Source: Microsoft KB5028240 • MSRC update-guide entry Related CVEs: CVE-2023-35365 CVE-2023-35366 CVE-2023-35367 CVE-2023-32057 CVE-2023-35297 CVE-2023-33166 CVE-2023-33167 CVE-2023-33168  +12 more Affected components: Windows Server 2016 Windows Server 2016 (Server Core installation) Table of contents Symptom […]

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Common Problems 112585

Windows Server 2019 — Windows Update for Business enrollment conflict blocks update scans — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 22 January 2023 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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