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kubeadm — Interface for creating and managing Kubernetes clusters. More information: <https://kubernetes.io/do

Submitted by: @import:tldr-pages·Mar 2, 2026·

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Problem

How to use the kubeadm command: Interface for creating and managing Kubernetes clusters. More information: <https://kubernetes.io/docs/reference/setup-tools/kubeadm/>.

Solution

kubeadm — Interface for creating and managing Kubernetes clusters. More information: <https://kubernetes.io/docs/reference/setup-tools/kubeadm/>.

Create a Kubernetes control plane:

kubeadm init

Bootstrap a Kubernetes worker node and join it to a cluster:

kubeadm join --token {{token}}

Create a new bootstrap token with a TTL of 12 hours:

kubeadm token create --ttl {{12h0m0s}}

Check if the Kubernetes cluster is upgradeable and which versions are available:

kubeadm upgrade plan

Upgrade Kubernetes cluster to a specified version:

kubeadm upgrade apply {{version}}

View the kubeadm ConfigMap containing the cluster's configuration:

kubeadm config view

Revert changes made to the host by 'kubeadm init' or 'kubeadm join':

kubeadm reset

Code Snippets

Create a Kubernetes control plane

kubeadm init

Bootstrap a Kubernetes worker node and join it to a cluster

kubeadm join --token {{token}}

Create a new bootstrap token with a TTL of 12 hours

kubeadm token create --ttl {{12h0m0s}}

Check if the Kubernetes cluster is upgradeable and which versions are available

kubeadm upgrade plan

Upgrade Kubernetes cluster to a specified version

kubeadm upgrade apply {{version}}

Context

tldr-pages: common/kubeadm

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