🟡 Medium ⏱ 5–30 min Last verified: 21 August 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 […]
Introduction This guide explains how to Configure Containerd 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 the standard repositories […]
Introduction This guide explains how to Install Haskell GHCup 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 the standard […]
Introduction This tutorial demonstrates how to Configure firewalld Rich Rules on Oracle Linux 10 on Oracle Linux 10. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered Oracle Linux 10 system with the […]
Introduction Oracle Linux 10 ships with a stable, security-hardened base that makes deploying install java openjdk 21 on oracle linux 10 both straightforward and auditable. This tutorial covers the complete procedure for how to Install Java OpenJDK 21 on Oracle Linux 10, including dnf module streams where applicable, systemd unit management, and the firewalld rules […]
Introduction Deploying set up an nfs server 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 […]
Introduction This guide explains how to Monitor MariaDB with mysqld_exporter 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 the […]
Jaeger is a distributed tracing platform originally developed by Uber that helps developers visualise request flows across microservices, identify latency bottlenecks, and diagnose failures in complex systems. Each request is represented as a trace composed of spans — timed operations — that are collected from instrumented services and assembled into a service map. This guide […]
🔴 Critical ⏱ 5–30 min Last verified: 19 August 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 […]
Introduction Setting up use oracle linux uek kernel features 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 Use Oracle Linux UEK Kernel Features on Oracle Linux 10, with all the commands you need, the SELinux […]
