Building and Using a K3s Cluster

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Building and Using a K3s Cluster

In this lab, you will walk through the entire process of bootstrapping a working K3s cluster. You will install K3s on multiple servers. Then, you will configure those servers to form a multi-server cluster. Finally, you will run an application on your cluster to demonstrate that everything is working. After completing this lab, you will have built a K3s cluster from start to finish!

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Lab Info

Level

Intermediate

Last updated

Sep 22, 2025

Duration

30m

Challenge

Build the K3s Server
1. Log in to the K3s Server instance.
2. Install K3s in such a way that this instance will function as a K3s server.
Challenge

Build the K3s Worker Nodes
1. Log in to both K3s Worker 1 and K3s Worker 2.
2. Install K3s on both instances so they will function as worker nodes and form a cluster with the K3s server.
Challenge

Run a Sample Application on the New Cluster
1. Log in to the K3s Server instance.
2. Create a pod that runs the wernight/funbox image: fortune | cowsay.
3. After the container finishes running, view your fortune:
  
  sudo kubectl logs cowfortune

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