KubeAdm is a popular tool used to set up a Kubernetes cluster on local machines or in production environments. It automates the process of creating and configuring the various components required to run a Kubernetes cluster, making it easy for developers and administrators to deploy and manage their applications.

In this article, we will discuss how to set up KubeAdm on your local computer.

Step 1: Install Docker

Before you can install KubeAdm, you need to install Docker on your local machine. Docker is a containerization platform that is used to run applications in isolated environments. KubeAdm requires Docker to be installed in order to create and manage the Kubernetes containers.

You can download and install Docker from the official Docker website. Once you have installed Docker, you can test the installation by running the command docker run hello-world.

Step 2: Install KubeAdm

The next step is to install KubeAdm. You can download KubeAdm from the official Kubernetes website. Once you have downloaded KubeAdm, you can extract the files and move them to a directory in your PATH environment variable. This will allow you to run KubeAdm commands from any location in your terminal.

Step 3: Set up a Kubernetes cluster

Once you have installed KubeAdm, you can use it to create a Kubernetes cluster. To create a cluster, run the following command:

sudo kubeadm init

This will create a new Kubernetes cluster with a single master node. The command will also generate a token that you can use to join worker nodes to the cluster.

Step 4: Set up kubectl

kubectl is a command-line tool used to interact with Kubernetes clusters. You need to install kubectl on your local machine in order to manage the Kubernetes cluster you just created with KubeAdm.

You can install kubectl by downloading the binary from the official Kubernetes website. Once you have downloaded kubectl, you can move the binary to a directory in your PATH environment variable. This will allow you to run kubectl commands from any location in your terminal.

Step 5: Join worker nodes to the cluster

Now that you have set up a Kubernetes cluster with a single master node, you can join worker nodes to the cluster. To join a worker node to the cluster, run the following command:

sudo kubeadm join : --token --discovery-token-ca-cert-hash

Replace with the IP address of the master node, with the port number used by KubeAdm, with the token generated by KubeAdm, and with the discovery token CA certificate hash generated by KubeAdm.

Step 6: Verify the cluster

Once you have joined worker nodes to the cluster, you can verify that the cluster is functioning correctly by running the following command:

kubectl get nodes

This command will display the nodes that are part of the Kubernetes cluster. If the command returns the master node and the worker nodes you joined, then the cluster is set up correctly.

In conclusion, setting up KubeAdm on your local computer is a simple process that can be completed in a few easy steps. By following the steps outlined in this article, you can create a Kubernetes cluster on your local machine and start deploying and managing your applications using Kubernetes.