kubeadm

Initialize control plane

$ sudo kubeadm init

$ sudo kubeadm join [control-plane:6443] --token [token] --discovery-token-ca-cert-hash [hash]

$ kubeadm token create --print-join-command

$ sudo kubeadm reset

$ sudo kubeadm upgrade apply [v1.28.0]

$ kubeadm config print init-defaults

kubeadm command [options]

kubeadm bootstraps Kubernetes clusters. It initializes control planes and joins worker nodes.
The tool handles certificates, kubelet config, and add-ons. It follows best practices for cluster setup.
kubeadm bootstraps Kubernetes clusters.

init

Initialize control plane.

Join cluster as node.

Reset node to pre-init state.

Upgrade cluster components.

Manage join tokens.

Manage configuration.

Display help information.

Requires root. Container runtime needed. Network plugin not included.

kubeadm was created as the official cluster bootstrapping tool for Kubernetes, simplifying cluster setup.

kubectl(1), kubelet(8), kops(1)