Spinning up a 3 Node Kubernetes Cluster using KinD

In order to setup a Kubernetes cluster using KinD locally in your Linux OS, we need Docker service to be up and running in our machine.

Full form of KinD is pretty self-explanatory. KinD = Kubernetes in Docker

I’m using Ubuntu Desktop and hence the setup will be according to accommodate this for Ubuntu OS.

Let’s get started.

Part 1: Installing Docker, Docker CLI, ContainerD as the CRI (Container Runtime Interface) and Docker Compose Plugin

1.

sudo apt-get update

2.

sudo apt-get install ca-certificates curl gnupg lsb-release

3.

sudo mkdir -p /etc/apt/keyrings

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg

echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

4.

sudo apt-get update

5.

sudo apt-get install docker-ce docker-ce-cli containerd.io docker-compose-plugin

6.

sudo service docker start

7.

sudo systemctl status docker

Part 2: Setting up Kubernetes Cluster

1.

sudo apt update

sudo apt upgrade -y

curl -Lo ./kind https://github.com/kubernetes-sigs/kind/releases/download/v0.20.0/kind-linux-amd64

chmod +x ./kind

sudo mv ./kind /usr/local/bin/

2.

kind: Cluster
apiVersion: kind.x-k8s.io/v1alpha4
nodes:
  - role: control-plane
  - role: worker
  - role: worker

kind create cluster --name <clusterName> --config ./<YAML file>

3.

sudo snap install kubectl --classic

4.

sudo kubectl get nodes

sudo kubectl get ns

Finally, we have our Kubernetes Cluster up and running.