Kernel Drivers

Common Problems 124173

Oracle UEK Module Missing After Dracut Initramfs Rebuild

🟠 High   ⏱ 5–30 min  Last verified: 19 September 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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How to Install HAProxy on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Install HAProxy on Debian 13

Introduction How to Install HAProxy on Debian 13 is a fundamental operation for any administrator maintaining a Debian 13 Trixie server. Debian 13 Trixie ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 12. This tutorial […]

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How to Configure Rate Limiting in Nginx on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Configure Rate Limiting in Nginx on Debian 13

Introduction How to Configure Rate Limiting in Nginx on Debian 13 is a fundamental operation for any administrator maintaining a Debian 13 Trixie server. Debian 13 Trixie ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian […]

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How to Configure Static File Serving with Nginx on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Configure Static File Serving with Nginx on Debian 13

Introduction Deploying configure static file serving with nginx on a Debian 13 Trixie machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites Before you begin, […]

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Oracle Linux 10 — kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 10

Oracle Linux 10 — kernel — vulnerability — patch and remediation guide (ELSA-2025-14510)

🟠 High   ⏱ 15–60 min  Last verified: 18 September 2025 Affected versions: Oracle Linux 10 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-14510 Related CVEs: CVE-2025-38417 CVE-2025-37914 CVE-2025-38200 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 Sudo Privileges on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Configure Sudo Privileges on Debian 13

Introduction Deploying configure sudo privileges on a Debian 13 Trixie machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites You will need a registered Debian […]

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How to Use snapper for Btrfs Snapshot Management on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Use snapper for Btrfs Snapshot Management on Debian 13

Introduction Debian 13 Trixie is built around the ethos of stability and free software. Setting up use snapper for btrfs snapshot management on Trixie leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Trixie freeze. Follow each step carefully and the […]

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Common Problems 127029

CentOS Stream 10 – Common Problem 157 – Diagnosis and Fix

🟠 High   ⏱ 5–30 min  Last verified: 16 September 2025 Affected versions: CentOS Stream 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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How to Configure VLAN Tagging with 802.1Q on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Configure VLAN Tagging with 802.1Q on RHEL 9

VLAN tagging using the IEEE 802.1Q standard allows a single physical network interface to carry traffic for multiple isolated networks simultaneously. Each VLAN is identified by a numeric tag (1–4094) inserted into Ethernet frames, and the operating system presents each tagged VLAN as a separate logical interface with its own IP address and routing table. […]

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Common Problems 123993

firewalld Rules Lost After Reboot on New Host

🟡 Medium   ⏱ 5–30 min  Last verified: 16 September 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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