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Common Problems 114001

RHEL 10 – NFS mount permission denied due to SELinux context mismatch – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 11 December 2025 Affected versions: RHEL 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 & Hardening Related Errors & […]

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Common Problems 124024

Oracle Linux 10 Chronyd Not Synchronizing Time

🟠 High   ⏱ 5–30 min  Last verified: 11 December 2025 Affected versions: Oracle Linux 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 & Hardening Related Errors […]

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Common Problems 114615

sudo Access Broken by Invalid sudoers Changes on RHEL 9

🟡 Medium   ⏱ 5–30 min  Last verified: 11 December 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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Debian 13 — rspamd — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — rspamd — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 10 December 2025 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2017-11737 Upstream summary: interface/js/app/history.js in WebUI in Rspamd before 1.6.3 allows XSS via the Subject and Message-Id headers, which are mishandled in the history page. Table of contents Symptom […]

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How to Apply CIS Benchmark to RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Apply CIS Benchmark to RHEL 10

Introduction RHEL 10 ships with a stable, security-hardened base that makes deploying apply cis benchmark to rhel 10 both straightforward and auditable. This tutorial covers the complete procedure for how to Apply CIS Benchmark to RHEL 10, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for network-facing services. Prerequisites […]

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Common Problems 114121

RHEL 10 – SSH public key authentication denied from mislabeled user home directories – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 8 December 2025 Affected versions: RHEL 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 & Hardening Related Errors & […]

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openSUSE Tumbleweed — pam_u2f — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — pam_u2f — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2025:0167-1 (see also SUSE bugzilla) Related CVEs: CVE-2025-23013 CVE-2021-31924 CVE-2019-12209 CVE-2019-12210 Upstream summary: In Yubico pam-u2f before 1.3.1, local privilege escalation can sometimes occur. This product implements a Pluggable Authentication Module (PAM) […]

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Common Problems 113899

RHEL 10 – dnf install fails with modular dependency conflict – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 8 December 2025 Affected versions: RHEL 10.0 RHEL 10.1 📖 ~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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How to Configure Jenkins Pipelines on Oracle Linux 10 — step-by-step Oracle Linux 10 tutorial on Progressive Robot

How to Configure Jenkins Pipelines on Oracle Linux 10

Introduction Setting up configure jenkins pipelines on oracle linux 10 on a Oracle Linux 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Configure Jenkins Pipelines on Oracle Linux 10, with all the commands you need, the SELinux and firewalld considerations to keep in […]

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How to Configure Nginx Load Balancing on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Configure Nginx Load Balancing on RHEL 10

Introduction How to Configure Nginx Load Balancing on RHEL 10 on RHEL 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 reproducible […]

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