Learn how to install Kubernetes on Ubuntu 22.04 on a single node. Our Kubernetes Support team is here to help you with your questions and concerns.

How to Install Kubernetes on Ubuntu 22.04 on Single Node

Kubernetes is an open-source container orchestration system. It simplifies the automation of software deployment, scaling, and management. Let’s take a look at how to set up Kubernetes on Ubuntu 22.04:

1. First, we have to make sure the system packages are up to date:

   sudo apt updateCopy Code
2. As Kubernetes needs Docker to manage containers, we have to install it with this command:

   sudo apt install docker.io -yCopy Code
3. Then, start the Docker service and enable it to run on startup:

   sudo systemctl start docker
   sudo systemctl enable docker
   Copy Code
4. Next, check the status of Docker to confirm it’s running properly:

   sudo systemctl status dockerCopy Code

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5. Now, it is time to add the Kubernetes signing key. So, create a directory for the keyrings:

   sudo mkdir /etc/apt/keyringsCopy Code

   Then, add the Kubernetes signing key:

   curl -fsSL https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-archive-keyring.gpg
   Copy Code
6. After that, add the Kubernetes repository:

   echo "deb [signed-by=/etc/apt/keyrings/kubernetes-archive-keyring.gpg] https://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee /etc/apt/sources.list.d/kubernetes.listCopy Code
7. Then, update the package list and install Kubernetes components:

   sudo apt-get update
   sudo apt install kubeadm kubelet kubectl -y
   Copy Code
8. Furthermore, we can prevent automatic updates that may disrupt your setup by marking the Kubernetes packages:

   sudo apt-mark hold kubeadm kubelet kubectlCopy Code
9. Finally, check the installed Kubernetes version:

   kubeadm versionCopy Code
10. To ensure the cluster is set up correctly, check the nodes and pods:

    kubectl get nodes
    kubectl get pods --all-namespaces
    Copy Code

Following the above steps, we can install and configure Kubernetes on our Ubuntu 22.04 system.

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Conclusion

In brief, our Support Experts demonstrated how to install Kubernetes on Ubuntu 22.04 on a single node.