An interactive, self-hosted lab that runs a live k3s cluster inside Docker on your laptop — with an in-browser terminal, structured lessons, and pre-loaded tooling. No simulators. No cloud bills.
Every component runs locally. Open the browser, pick a lesson, and start running commands against live infrastructure within minutes.
A k3s cluster boots inside Docker with ArgoCD, Prometheus, Grafana, and External Secrets Operator pre-installed. No mocks, no sandboxed abstractions.
A real bash shell connects directly to the sandbox container. Run kubectl, helm, argocd, and Python commands without leaving the UI.
Read theory on the left, run commands on the right — at the same time. Toggle between Split, Theory-only, and Terminal-only views.
12 topics ordered from Linux fundamentals through to Kubernetes, GitOps, Security, Observability, Bash scripting, Python automation, and real-world projects.
Mark lessons complete as you go. Progress is saved locally and persists between restarts — pick up exactly where you left off.
Clone the repo and run ./start.sh build. The bootstrap container handles everything — no manual cluster configuration required.
Lessons are ordered so that later topics build on earlier ones. New content is added regularly.
| Topic | Lessons |
|---|---|
| Linux & OS | Linux Fundamentals · Terminal Mastery & System Monitoring |
| Git | Git Fundamentals |
| Networking | Networking & Protocols · TLS, Certificates & PKI · Web Servers, Reverse Proxies & Load Balancers |
| Docker | Images, Layers & Networking |
| Kubernetes | Core Concepts · Operations · Service Mesh · API Gateways & Ingress |
| Cloud | AWS Fundamentals · Multi-Cloud: Azure & GCP |
| IaC | Terraform Modules & State · Configuration Management with Ansible |
| CI/CD & Helm | GitLab CI/CD · CI/CD with GitHub Actions · Helm Chart Authoring |
| GitOps | GitOps & ArgoCD |
| Security | Secret Management · Kubernetes RBAC · Network Policies · Container Security |
| Observability | Prometheus & PromQL · Logs Management · Distributed Tracing · Log Aggregation · Alerting |
| Bash | Defensive Scripting · Text & Data Wrangling · Idempotent Scripts · Reusable Libraries · kubectl Scripting · Arrays · Advanced String Processing |
| Python | Basics for DevOps · subprocess · boto3 · Kubernetes Client · REST APIs · OOP · Testing |
| Projects | GitLab CI Helper · ESO Secret Rotation · Namespace & Cost Hygiene CLI · Keycloak & On-Prem Ops |
Requires Docker with Compose v2 and ~4 GB of free RAM. Works on macOS, Linux, and Windows (WSL2).
Download the project to your machine.
Run ./start.sh build. Images are built and the cluster bootstraps automatically.
Navigate to http://localhost:3000. The status indicator turns green once the cluster is ready (3–5 min on first run).
Pick any lesson from the dashboard or sidebar and start running commands in the live terminal.
No cloud account required. The full stack boots inside Docker Compose on your laptop.