DNS

How to Configure MySQL InnoDB Cluster on CentOS Stream 10 — step-by-step CentOS Stream 10 tutorial on Progressive Robot

How to Configure MySQL InnoDB Cluster on CentOS Stream 10

Introduction How to Configure MySQL InnoDB Cluster on CentOS Stream 10 on CentOS Stream 10 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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How to Configure Redis Sentinel on CentOS Stream 10 — step-by-step CentOS Stream 10 tutorial on Progressive Robot

How to Configure Redis Sentinel on CentOS Stream 10

Introduction How to Configure Redis Sentinel on CentOS Stream 10 on CentOS Stream 10 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 is […]

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Alpine Linux 3.20 — pdns — multiple vulnerabilities (10 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux 3.20

Alpine Linux 3.20 — pdns — multiple vulnerabilities (10 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.20 / fixed in 4.6.1-r0 📖 ~4 min read  •  Source: Alpine secdb entry — pdns 4.6.1-r0 Related CVEs: CVE-2022-27227 CVE-2021-36754 CVE-2020-17482 CVE-2019-3871 CVE-2018-10851 CVE-2018-14626 CVE-2019-10203 CVE-2019-10162  +2 more Upstream summary: Alpine community repository for vv3.20 ships pdns 4.6.1-r0 which […]

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AlmaLinux 8 — aardvark-dns — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — aardvark-dns — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2026:4672 Related CVEs: CVE-2025-61726 CVE-2025-61728 CVE-2025-68121 CVE-2024-24785 CVE-2025-61729 CVE-2025-65637 CVE-2025-47913 CVE-2025-52881  +12 more Upstream summary: The container-tools module contains tools for working with containers, notably podman, buildah, skopeo, and runc. Security Fix(es): […]

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How to Configure Ceph Cluster on CentOS Stream 10 — step-by-step CentOS Stream 10 tutorial on Progressive Robot

How to Configure Ceph Cluster on CentOS Stream 10

Introduction How to Configure Ceph Cluster on CentOS Stream 10 on CentOS Stream 10 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 is […]

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Common Problems 114441

SELinux AVC Denials Breaking Web Application Access

🟡 Medium   ⏱ 5–30 min  Last verified: 29 March 2025 📖 ~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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Oracle Linux 9 — bind9.18 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — bind9.18 — vulnerability — patch and remediation guide (ELSA-2025-21111)

🟠 High   ⏱ 15–60 min  Last verified: 29 March 2025 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-21111 Related CVEs: CVE-2025-40778 CVE-2025-40780 CVE-2025-8677 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 Configure OPcache for PHP on CentOS Stream 10 — step-by-step CentOS Stream 10 tutorial on Progressive Robot

How to Configure OPcache for PHP on CentOS Stream 10

Introduction CentOS Stream 10 ships with a stable, security-hardened base that makes deploying configure opcache for php on centos stream 10 both straightforward and auditable. This tutorial covers the complete procedure for how to Configure OPcache for PHP on CentOS Stream 10, including dnf module streams where applicable, systemd unit management, and the firewalld rules […]

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How to Install MySQL 8 on CentOS Stream 10 — step-by-step CentOS Stream 10 tutorial on Progressive Robot

How to Install MySQL 8 on CentOS Stream 10

Introduction CentOS Stream 10 ships with a stable, security-hardened base that makes deploying install mysql 8 on centos stream 10 both straightforward and auditable. This tutorial covers the complete procedure for how to Install MySQL 8 on CentOS Stream 10, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for […]

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How to Deploy a Python Flask Application on Windows Server 2025 — step-by-step Windows Server 2025 tutorial on Progressive Robot

How to Deploy a Python Flask Application on Windows Server 2025

How to Deploy a Python Flask Application on Windows Server 2025 Python Flask is a lightweight and flexible web framework that powers everything from internal tools to production APIs. While Linux is the more common deployment platform for Python web applications, Windows Server 2025 is a fully viable host — particularly in enterprise environments where […]

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