How to start the master node with kubeadm or kubectl

 --https://share.google/aimode/CpQCKYetuCONQRZeM

To start a Kubernetes master node (control plane), you use kubeadm init. kubectl is only a command-line tool used to manage the cluster after it is running, not to start the node itself. Make sure swap is disabled and a container runtime (like containerd) is installed. [1, 2, 3]

Initialize the Master Node

Log in to your designated master node and run the initialization command: []

bash

sudo kubeadm init --pod-network-cidr=192.168.0.0/16

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(You can adjust the --pod-network-cidr flag based on the network plugin you plan to use later). []

Configure kubectl Access

Once the initialization finishes successfully, copy the generated configuration commands from the output terminal to let kubectl work for your user: []

bash

mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config

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Install a Pod Network Add-on

Your master node will show a Not Ready status until you deploy a container network interface (CNI) plugin (such as Calico, Flannel, or Weave). For example, to apply a network plugin: [1]

bash

kubectl apply -f <pod-network-yaml-url>

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If you'd like, I can help you with:

• Choosing and installing a specific pod network (like Calico or Flannel)
• Getting the join command for your worker nodes
• Troubleshooting pre-check errors during kubeadm init