Build the home lab and free accounts

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$ als gewone gebruiker# als root (of met sudo)

Get the free accounts

Most of the lab is free. Create the accounts on day one.

Account	What you get	Note
Red Hat Developer Subscription for Individuals	Free RHEL 10 for up to 16 systems	Renew it every year
Azure free account	Credit for 30 days, 12 months of popular services, always-free services	Set a budget alert on day one
GitHub	Free repositories, Actions minutes, Codespaces hours	Every lab and project goes here
Killercoda	Free Linux and Kubernetes playgrounds in the browser	Good for quick tests and CKA scenarios
roadmap.sh — DevOps	A free map of the whole field	Use it to find gaps

Let op

Cloud labs cost money when you forget them. Delete lab resource groups after each session, and keep the budget alert on.

2.2

Build two Linux machines

Two RHEL 10 virtual machines (server1, server2) cover all Linux, SSH, network and storage labs.

#dnf install -y qemu-kvm libvirt virt-install
#systemctl enable --now libvirtd
#virt-install --name server1 --memory 2048 --vcpus 2 --disk size=20 --disk size=5 \
    --location /var/lib/libvirt/images/rhel-10.0-x86_64-dvd.iso --os-variant rhel10.0 --network network=default

The full steps are in the lab Build your two practice servers. Take a snapshot after the install, so you can go back after every broken lab.

2.3

Prepare the Azure account

Install the tools on your Linux machine, log in, and create a budget before anything else.

#rpm --import https://packages.microsoft.com/keys/microsoft.asc
#dnf install -y https://packages.microsoft.com/config/rhel/10/packages-microsoft-prod.rpm
#dnf install -y azure-cli
$az login --use-device-code
$az account show --output table
$az group create --name rg-lab --location westeurope
$az group delete --name rg-lab --yes --no-wait

Onthoud

One resource group per lab. Deleting the group deletes everything in it — the cleanest way to stop all costs.

2.4

Set up Git and GitHub

Every script, Terraform file and pipeline lives in Git from the first day.

$git config --global user.name "Your Name"
$git config --global user.email "you@users.noreply.github.com"
$ssh-keygen -t ed25519 -C "github"
$cat ~/.ssh/id_ed25519.pub
$ssh -T git@github.com

Add the public key in GitHub → Settings → SSH and GPG keys. More: Git and GitHub.

2.5

Run a local Kubernetes cluster

For phases 4 and 5 you need a cluster at home. kind (Kubernetes in containers) and k3s (a small real distribution) are both free.

$curl -Lo ./kind https://kind.sigs.k8s.io/dl/latest/kind-linux-amd64
$chmod +x kind && sudo mv kind /usr/local/bin/
$kind create cluster --name lab
$kubectl get nodes
$curl -sfL https://get.k3s.io | sh -
$sudo k3s kubectl get nodes

Tool	Good for
kind	Fast clusters for tests, many clusters at once, CI
k3s	A light "real" cluster on one or more VMs, close to production
kubeadm	The CKA way: build the cluster by hand (see Install a cluster)

2.6

Keep a lab journal

Write down every lab: what you did, what broke, how you fixed it. It becomes notes, summaries, LinkedIn posts and interview stories.

Lab status and notes: the Labs page shows my notes per lab.
Short daily notes: IT notes and DevSecOps notes.
Command details: Commands.

Oefenen

Lab 1.1Build your two practice serversMakkelijk · 60 minNog niet begonnen

Oefenen

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