Operations

Amazon Linux 2 — kernel-livepatch-4.14.355-280.679 — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-4.14.355-280.679 — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2LIVEPATCH-2025-275 Related CVEs: CVE-2023-53530 Upstream summary: In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Use raw_smp_processor_id() instead of smp_processor_id() (CVE-2023-53530) Table of contents Symptom & Impact […]

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How to Configure Advanced Audit Policy on Windows Server 2022 — step-by-step Windows Server 2022 tutorial on Progressive Robot

How to Configure Advanced Audit Policy on Windows Server 2022

How to Install NGINX on Windows Server 2022 NGINX has a native Windows port that runs as a standard Windows process. While NGINX on Windows has notable limitations compared to its Linux counterpart, it is a capable web server and reverse proxy for development environments, internal tooling, and scenarios where a lightweight HTTP server is […]

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Oracle Linux 9 — gmp security and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — gmp security and — enhancement update — new behaviour and fixes (ELSA-2023-6661)

🟢 Low   ⏱ 5–15 min  Last verified: 5 March 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-6661 Related CVEs: CVE-2021-43618 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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Common Problems 117410

Ubuntu 20.04 LTS Netplan Apply Drops Network Connectivity

🟡 Medium   ⏱ 5–30 min  Last verified: 5 March 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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Common Problems 114405

RHEL 9: subscription-manager Repositories Not Enabled

🟡 Medium   ⏱ 5–30 min  Last verified: 5 March 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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Common Problems 113090

Windows Server 2016 — Time sync drifts because NTP peers are unreachable — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 5 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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Debian 11 — advancecomp — multiple vulnerabilities (12 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — advancecomp — multiple vulnerabilities (12 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 5 March 2023 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-1056 CVE-2019-8379 CVE-2019-8383 CVE-2019-9210 CVE-2022-35014 CVE-2022-35015 CVE-2022-35016 CVE-2022-35017  +4 more Upstream summary: An out-of-bounds heap buffer read flaw was found in the way advancecomp before 2.1-2018/02 handled processing […]

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How to Set Up a Flask Application on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Set Up a Flask Application on Oracle Linux 9

Introduction How to Set Up a Flask Application on Oracle Linux 9 on Oracle Linux 9 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting […]

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Common Problems 112451

Windows Server 2019 – Storage Replica initial sync never completes – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 5 March 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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Ubuntu 22.04 — ruby-sanitize — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — ruby-sanitize — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 5 March 2023 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6748-1 Related CVEs: CVE-2023-23627 CVE-2023-36823 Upstream summary: It was discovered that Sanitize incorrectly handled noscript elements under certain circumstances. An attacker could possibly use this issue to execute a cross-site […]

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