How to create nodes in k8s?

To create a Node in Kubernetes (k8s), you need to follow the steps below:

1. Install Docker: Install Docker on the Node server to run containers on the node. Installation methods may vary depending on the operating system.
2. Install Kubeadm, Kubelet, and Kubectl: These are essential components of Kubernetes that you need to install on the Node nodes. You can follow the installation guidelines provided in the official Kubernetes documentation.
3. To initialize a Node: Use the kubeadm command to initialize the Node. First, generate an initialization configuration file using the kubeadm config print init-defaults command, then initialize the Node using the kubeadm init command.
4. Set up Kubelet: Configure Kubelet on the Node to connect to the Kubernetes cluster. You can configure Kubelet by editing the /etc/kubernetes/kubelet.conf file.
5. Join the cluster: Run the command “kubeadm token create –print-join-command” on the Master node to obtain the command for joining the cluster. Then, run this command on the Node node to add it to the Kubernetes cluster.
6. To verify a Node: Use the “kubectl get nodes” command to check if the Node has successfully joined the cluster. If the Node’s status is “Ready,” it indicates success.

To add multiple Node nodes to a Kubernetes cluster, simply repeat the above steps. Ensure that there is a stable network connection between the Node and Master nodes, and that the versions of Docker, kubelet, and kubectl on the Node nodes are compatible with those on the Master node.