Docker Engine is the industry-standard container runtime. It lets you build, ship, and run applications in isolated containers, ensuring consistent environments from development through production. This guide installs Docker Engine on Ubuntu 26.04 LTS using the official Docker repository. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS A user with sudo privileges […]
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 […]
kubeadm is the official tool for bootstrapping a production-ready Kubernetes cluster. It automates the complex setup of the control plane and worker nodes. This guide installs a single-node Kubernetes cluster using kubeadm on Ubuntu 26.04 LTS — ideal for learning or as a foundation for a multi-node cluster. Tested and valid on: Ubuntu 26.04 LTS […]
k3s is a certified lightweight Kubernetes distribution by Rancher. With a single binary under 100 MB, k3s is perfect for edge computing, IoT, CI environments, and resource-constrained servers. It bundles containerd, Flannel networking, and SQLite (or etcd) in one package. This guide installs k3s on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS […]
A private Docker registry lets you store and distribute container images within your own infrastructure, avoiding Docker Hub rate limits and keeping proprietary images secure. This guide sets up a private Docker registry with TLS and basic authentication on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS with Docker […]
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 […]
Managing Docker images and containers effectively is a core skill for any developer or sysadmin working with containers. This guide covers the essential commands for building, tagging, pushing, listing, inspecting, and cleaning up Docker images and containers on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS with Docker Engine […]
Docker provides two main mechanisms for persisting and sharing data: named volumes (managed by Docker) and bind mounts (host filesystem paths). Understanding the differences and use-cases helps you choose the right storage strategy for your containers. This guide covers both on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS […]
PM2 is a production process manager for Node.js. It keeps applications running after crashes, handles log management, enables zero-downtime reloads, and integrates with systemd for auto-start on boot. This guide deploys a Node.js application with PM2 and Nginx on Ubuntu 26.04 LTS. Tested and valid on: Ubuntu 26.04 LTS Prerequisites Ubuntu 26.04 LTS with Node.js […]
Default PHP settings expose version information, allow dangerous functions, and leave logging disabled. This guide hardens PHP 8.3 on Ubuntu 24.04 LTS to protect production web applications. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server with PHP 8.3 installed A user with sudo privileges Step 1 – Disable Version Exposure Open […]
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