Docker Compose simplifies multi-container application deployment using a declarative YAML file. This guide demonstrates deploying a full-stack web application (Nginx, Node.js API, MySQL, Redis) with Docker Compose on Ubuntu 26.04 LTS, covering real-world patterns like named volumes, custom networks, health checks, and environment variable management. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 […]
Docker Compose is a tool for defining and running multi-container Docker applications using a single YAML configuration file. With one command you can start all services, networks, and volumes for your entire application stack. This guide installs Docker Compose on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS with […]
Laravel 12 is the latest major release of the popular PHP framework, featuring a streamlined directory structure, improved performance, and modern PHP 8.4 syntax support. This guide installs Laravel 12 on a LEMP stack (Linux, Nginx, MySQL, PHP 8.4) on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS with […]
🟠 High ⏱ 5–30 min Last verified: 8 June 2026 Affected versions: Ubuntu 26.04 LTS 📖 ~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 FreeBSD 15 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up secure the mariadb installation on FreeBSD 15 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from any Linux distribution. This guide […]
Introduction This tutorial covers How to Install PHP 8.3 on SLES 16 on SLES 16. SLES 16 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Step 1 — Install PHP zypper install -y php8 php8-fpm php8-mysql php8-curl […]
🟡 Medium ⏱ 5–30 min Last verified: 4 June 2026 Affected versions: Ubuntu 26.04 LTS 📖 ~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 […]
Prometheus and Grafana are the de facto standard monitoring stack for Kubernetes clusters. Prometheus is a time-series metrics database that scrapes metrics from Kubernetes components (API server, kubelet, etcd) and from applications via HTTP endpoints in a pull-based model. Grafana is a visualisation platform that queries Prometheus and displays metrics as interactive dashboards. The kube-prometheus-stack […]
Introduction RHEL 10 ships with a stable, security-hardened base that makes deploying monitor mariadb with mysqld_exporter both straightforward and auditable. This tutorial covers the complete procedure for how to Monitor MariaDB with mysqld_exporter on RHEL 10, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for network-facing services. Prerequisites You […]
Introduction Deploying set up mariadb galera cluster on a FreeBSD 15 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays entirely within the standard base + […]
