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Setting up a Kubernetes Cluster with containerd

containerd works well for running single containers or small groups of containers on a single host. But what if you have more than a few containers, or want those containers to be spread across multiple servers, or even made highly available? For these scenarios, you'll need a container orchestrator. Kubernetes is a popular container orchestration framework that easily works with containerd. In this lab, you'll learn to set up a Kubernetes cluster with containerd.

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Lab Info
Level
Intermediate
Last updated
Sep 24, 2025
Duration
1h 0m

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Table of Contents
  1. Challenge

    Install Kubernetes

    Inspect the containerd environment before you install Kubernetes, both to make sure it is installed, and to show what is currently running for comparison later.

    1. Add the Kubernetes yum repo to every host.
    2. Set SELinux to permissive mode.
    3. Install the Kubernetes utilities: kubelet, kubeadm, and kubectl.
    4. Enable the kubelet service.
  2. Challenge

    Set up the Kubernetes Cluster

    Inspect the containerd environment again. See what has changed.

    1. Create a cluster on the Controller node.
    2. Join the cluster on the Worker nodes.
    3. Add a network fabric to the cluster.
  3. Challenge

    Test the Cluster

    Inspect the containerd environment again. What is running now that wasn't before?

    1. Create an Nginx pod and run it on the cluster.
    2. Create a NodePort service for the Nginx pod.
    3. View the Nginx pod in a browser.

    Look at the containerd environment one more time. Notice that even though you started the pod with Kubernetes, it is running the containers using containerd. The worker node where the pod is running will have a container with a name that includes the name of your pod.

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