Kernel Drivers

Common Problems 120122

Debian 12 – software RAID array is degraded and does not rebuild

🔴 Critical   ⏱ 5–30 min  Last verified: 10 September 2023 Affected versions: Debian 12 📖 ~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 & […]

Read more
How to Configure Xdebug for PHP on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Configure Xdebug for PHP on Oracle Linux 9

Introduction How to Configure Xdebug for PHP on Oracle Linux 9 on Oracle Linux 9 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 […]

Read more
How to Install Amanda Network Backup on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Install Amanda Network Backup on Debian 12

Introduction How to Install Amanda Network Backup on Debian 12 is a fundamental operation for any administrator maintaining a Debian 12 Bookworm server. Debian 12 Bookworm 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. […]

Read more
Oracle Linux 9 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 9

Oracle Linux 9 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2023-13043)

🟠 High   ⏱ 15–60 min  Last verified: 8 September 2023 Affected versions: Oracle Linux 9 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-13043 Related CVEs: CVE-2023-42752 CVE-2023-3159 CVE-2023-4244 CVE-2023-42756 CVE-2023-4623 CVE-2023-4921 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

Read more
How to Configure auditd System Auditing on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Configure auditd System Auditing on Debian 12

Introduction How to Configure auditd System Auditing on Debian 12 is a fundamental operation for any administrator maintaining a Debian 12 Bookworm server. Debian 12 Bookworm 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. […]

Read more
How to Set Up a Private Container Registry on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Set Up a Private Container Registry on CentOS Stream 9

Introduction CentOS Stream 9 ships with a stable, security-hardened base that makes deploying set up a private container registry on centos stream 9 both straightforward and auditable. This tutorial covers the complete procedure for how to Set Up a Private Container Registry on CentOS Stream 9, including dnf module streams where applicable, systemd unit management, […]

Read more
How to Set Up Oracle Linux 9 Cluster with Oracle Grid Infrastructure — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Set Up Oracle Linux 9 Cluster with Oracle Grid Infrastructure

Introduction Oracle Linux 9 ships with a stable, security-hardened base that makes deploying set up oracle linux 9 cluster with oracle grid infrastructure both straightforward and auditable. This tutorial covers the complete procedure for how to Set Up Oracle Linux 9 Cluster with Oracle Grid Infrastructure, including dnf module streams where applicable, systemd unit management, […]

Read more
Amazon Linux 2023 — kernel-livepatch-6.1.34-58.102 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2023

Amazon Linux 2023 — kernel-livepatch-6.1.34-58.102 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2023 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2023LIVEPATCH-2023-013 Related CVEs: CVE-2023-3609 CVE-2023-3776 Upstream summary: A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation. If tcf_change_indev() fails, u32_set_parms() will […]

Read more
How to Set Up a WordPress Site on Oracle Linux 9 — step-by-step Oracle Linux 9 tutorial on Progressive Robot

How to Set Up a WordPress Site on Oracle Linux 9

Introduction How to Set Up a WordPress Site on Oracle Linux 9 on Oracle Linux 9 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 […]

Read more
How to Install .NET 8 SDK on Debian 12 — step-by-step Debian 12 tutorial on Progressive Robot

How to Install .NET 8 SDK on Debian 12

Introduction How to Install .NET 8 SDK on Debian 12 is a fundamental operation for any administrator maintaining a Debian 12 Bookworm server. Debian 12 Bookworm 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. […]

Read more
CHAT