Interactive Labs

Build real skills.
In the terminal.

Real commands. Real output. All in your browser, no cloud account, no VM, no cost. Earn XP as you go.

172

Exercises

across all labs

Labs

Linux to Istio

18.4K

XP Available

earn as you complete

Boss

Challenges

timed incident scenarios

Free

No Setup

runs in your browser

23K+

XP Levels

tiered progression

01Linux

02YAML

03Bash

04Git

05Networking

06Docker

07Kubernetes

08Helm

09Istio

Module

Category

Steps

Time

Level

Progress

Status

Master the Linux command line, filesystem, permissions, processes. The bedrock every engineer needs.

After this lab, you can

Navigate any filesystem
Manage users & permissions
Debug a production server via SSH
Pass Linux interview questions cold

3475 XP total

linux-basics

$ ls -la /home/learner
$ chmod 755 deploy.sh
$ ps aux | grep nginx

31 exercises to complete0%

🔥 Real Scenarios

31 exercises~90 min

Master YAML syntax, jq JSON querying, yq YAML manipulation, and the validation patterns used in every Kubernetes manifest, GitHub Action, and CI/CD pipeline.

After this lab, you can

Read and write any YAML config
Query JSON with jq in CI/CD
Update Kubernetes manifests with yq

1325 XP total

yaml-&-json

cat deployment.yaml
yq '.metadata.name' service.yaml
kubectl get pods -o json | jq '.[0]'

15 exercises to complete0%

11Break: Indent Errors

12Schema Validation

13GitHub Actions YAML

14jq: K8s API

15Interview: End-to-End

🔥 Real Scenarios

15 exercises~25 min

Variables, loops, functions, and scripts. The automation skill every DevOps engineer lives by.

After this lab, you can

Automate repetitive tasks
Write deployment scripts
Parse logs at scale

2375 XP total

bash-scripting

#!/bin/bash
for file in *.log; do
  echo "Processing $file"
done

27 exercises to complete0%

🔥 Real Scenarios

27 exercises~30 min

Commit, branch, merge, and undo. The daily workflow of every software engineer on the planet.

After this lab, you can

Branch, merge & rebase confidently
Resolve conflicts
Write clean commit history

2275 XP total

git-basics

$ git init && git add .
$ git commit -m "init: setup"
$ git checkout -b feature/auth

26 exercises to complete0%

🔥 Real Scenarios

26 exercises~25 min

Ping, DNS, ports, HTTP, and packet tracing. Understand what happens on the wire before containers or clusters.

After this lab, you can

Trace a request end-to-end
Debug DNS failures
Understand TCP/UDP/HTTP

2275 XP total

networking-basics

$ ping -c 4 google.com
$ nslookup api.example.com
$ curl -sI https://api.example.com

26 exercises to complete0%

🔥 Real Scenarios 🌐 Packet Journey

26 exercises~30 min

Build and run containers, manage images, map ports, mount volumes. The foundation of cloud deployments.

After this lab, you can

Containerize any app
Multi-stage builds
Debug container issues in production

3850 XP total

docker-containers

$ docker run -d -p 80:80 nginx
$ docker build -t myapp:v1 .
$ docker logs -f container_id

34 exercises to complete0%

🔥 Real Scenarios

34 exercises~40 min

Pods, deployments, services, scaling, and rollbacks. The core kubectl workflow every cloud engineer needs.

After this lab, you can

Deploy, scale & debug pods
Manage services & ingress
Handle rolling updates

3575 XP total

kubernetes-cli

$ kubectl get pods -n production
$ kubectl rollout undo deploy/api
$ kubectl scale deploy/web --replicas=5

36 exercises to complete0%

🔥 Real Scenarios

36 exercises~35 min

Install, upgrade, rollback, template, and build Helm charts. The package manager every Kubernetes team uses.

After this lab, you can

Package & deploy apps with charts
Manage releases & rollbacks
Build reusable templates

2575 XP total

helm-charts

$ helm install myapp ./chart
$ helm upgrade myapp ./chart -f values-prod.yaml
$ helm rollback myapp 1

31 exercises to complete0%

🔥 Real Scenarios

31 exercises~35 min

VirtualService, DestinationRule, mTLS, AuthorizationPolicy, canary deployments, circuit breakers, Envoy xDS, and the full Istio mental model.

After this lab, you can

Configure traffic routing
Set up mTLS
Implement circuit breakers

2000 XP total

istio-service-mesh

$ istioctl analyze
$ kubectl apply -f virtual-service.yaml
$ istioctl proxy-status

20 exercises to complete0%

🔥 Real Scenarios

20 exercises~45 min

9 modules · 246 exercises · 23,725 XP total

Foundations

Infrastructure

Orchestration

⚔️

Boss Challenges

NEWChain your skills together in real multi-tool production scenarios

⚔️ BOSS

Zero to Production

Ship a feature: commit → build image → deploy to a running cluster. No hand-holding.

Intermediate · 20 minSequential

500

GitDockerkubectl

~20 min · 3 phasesStart Challenge

⚔️ BOSS

Debug the Outage

Prod is down. Find the crashed pod, inspect logs, identify the bad image, revert the commit.

Advanced · 25 minSequential

500

kubectlDockerGit

~25 min · 3 phasesStart Challenge

🚨 INCIDENT

Incident Commander

3 AM alert. 4 concurrent faults. 25-minute timer. Triage, diagnose, fix, in any order.

Advanced · 15 min⏱ Timed

750

kubectlDockerNetworkingAnalysis

~15 min · 4 phases · TimedStart Incident

Skills you'll build

Linux

Foundation

31 exercises

Bash

Scripting

27 exercises

Git

Version Ctrl

26 exercises

Networking

DNS & TCP/IP

26 exercises

Docker

Containers

34 exercises

Kubernetes

Orchestration

37 exercises