Kernel Drivers

How to Install Composer on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Install Composer on RHEL 10

Introduction RHEL 10 ships with a stable, security-hardened base that makes deploying install composer both straightforward and auditable. This tutorial covers the complete procedure for how to Install Composer on RHEL 10, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for network-facing services. Prerequisites Before you begin, ensure you […]

Read more
How to Install SonarQube on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Install SonarQube on Debian 13

Introduction Deploying install sonarqube 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 Ensure Debian 13 Trixie is fully updated […]

Read more
How to Install kubectl on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Install kubectl on Debian 13

Introduction Deploying install kubectl 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 13 […]

Read more
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-2025-11855)

🟡 Medium   ⏱ 10–30 min  Last verified: 28 September 2025 Affected versions: Oracle Linux 10 📖 ~4 min read  •  Source: ELSA advisory ELSA-2025-11855 Related CVEs: CVE-2025-38110 CVE-2025-38088 CVE-2025-22121 CVE-2025-37797 CVE-2025-22091 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

Read more
How to Manage Python Versions with pyenv on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Manage Python Versions with pyenv on Debian 13

Introduction How to Manage Python Versions with pyenv 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 […]

Read more
How to Configure PHP-FPM with Nginx on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Configure PHP-FPM with Nginx on RHEL 10

Introduction How to Configure PHP-FPM with Nginx 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 […]

Read more
Common Problems 124109

Oracle Linux 10 – DNF Module Stream Conflicts Block Dependency Resolution – Stream Alignment Fix

🟠 High   ⏱ 5–30 min  Last verified: 27 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 […]

Read more
Common Problems 114626

Unsigned Kernel Module Refused Under Secure Boot

🟡 Medium   ⏱ 5–30 min  Last verified: 27 September 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 […]

Read more
How to Install Jenkins on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Install Jenkins on Debian 13

Introduction Deploying install jenkins 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 13 […]

Read more
How to Configure mod_security WAF in Apache2 on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Configure mod_security WAF in Apache2 on Debian 13

Introduction This guide explains how to Configure mod_security WAF in Apache2 on Debian 13 on Debian 13 Trixie. Debian Trixie uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 13 install with […]

Read more
CHAT