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Oracle Linux 8 — qt5-qtbase and qt5-qtwebsockets — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — qt5-qtbase and qt5-qtwebsockets — security and stability fixes — required update (ELSA-2020-4690)

🟡 Medium   ⏱ 10–30 min  Last verified: 28 September 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4690 Related CVEs: CVE-2020-0569 CVE-2018-21035 CVE-2020-13962 CVE-2015-9541 CVE-2020-0570 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

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Common Problems 114902

RHEL 8 RPM Database Locked or Corrupted During Package Operations

🟠 High   ⏱ 5–30 min  Last verified: 28 September 2020 Affected versions: 8.4 8.5 8.6 8.7 8.8 8.9 8.10 📖 ~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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How to Configure PHP Error Logging on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Configure PHP Error Logging on Oracle Linux 8

Introduction How to Configure PHP Error Logging 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 configuration […]

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Ubuntu 20.04 — libpam-tacplus — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — libpam-tacplus — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 28 September 2020 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4521-1 Related CVEs: CVE-2020-13881 Upstream summary: It was discovered that pam_tacplus did not properly manage shared secrets if DEBUG loglevel and journald are used. A remote attacker could use this […]

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Understanding Mutations in GraphQL — step-by-step DevOps tutorial on Progressive Robot

Understanding Mutations in GraphQL

This is a continuation of a series on GraphQL Actions. The previous tutorial explored GraphQL Queries. This time, we will take a closer look at Mutations. There’s a lot of similarities in the way GraphQL Queries and Mutations work, however, Mutations are more about mutating data than querying for it. In this article, we’ll dive more into it and treat its concepts in details.

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