March 2021 - Page 15 of 63

Oracle Linux 8 — bind security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — bind security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2022-2092)

🟡 Medium   ⏱ 10–30 min  Last verified: 24 March 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-2092 Related CVEs: CVE-2021-25219 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 115576

RHEL 7 systemctl Target Misconfiguration Boots into Rescue Mode

🟠 High   ⏱ 5–30 min  Last verified: 24 March 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 114960

Chrony time synchronization not working

🟡 Medium   ⏱ 5–30 min  Last verified: 24 March 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 113507

Windows Server 2012 R2 — WSUS SUSDB index bloat causes timeouts on console and client scans — Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 24 March 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 113022

Windows Server 2016 — IPsec site-to-site tunnel renegotiation fails after certificate renewal on RRAS — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 24 March 2021 Affected versions: Windows Server 2016 📖 ~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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How to Set Up a WordPress Site on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Up a WordPress Site on Oracle Linux 8

Introduction How to Set Up a WordPress Site on Oracle Linux 8 on Oracle Linux 8 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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Vue.jsのライフサイクルフックを理解する — step-by-step Javascript tutorial on Progressive Robot

Vue.jsのライフサイクルフックを理解する

ライフサイクルフックは、使用しているライブラリがバックグラウンドでどのように機能するのかを見せてくれます。ライフサイクルフックを使用すると、コンポーネントの作成、DOMへの追加、更新、または破壊がいつ行われたかを確認することができます。この記事では、作成、マウント、更新、破壊のフックを紹介します。

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Using the React-Async Library for Declarative Data Fetching — step-by-step Javascript tutorial on Progressive Robot

Using the React-Async Library for Declarative Data Fetching

The combination of React and `async-await` leads to a mixed pattern in which we have both imperative code (for data fetching) and declarative code (for UI composition). [React-async](https://github.com/ghengeveld/react-async) provides a declarative API to perform any REST API calls using a single React component, allowing declarative programming to be used throughout the application. In this article, we will explain how the React-Async library helps us fetch data.

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openSUSE Tumbleweed — apache2-mod_auth_mellon — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — apache2-mod_auth_mellon — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2021:2912-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-3639 Upstream summary: A flaw was found in mod_auth_mellon where it does not sanitize logout URLs properly. This issue could be used by an attacker […]

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