kubeadm.cheat

% kubeadm, kubernetes, k8s

# Init cluster
kubeadm init

# Generate token for joining worker nodes
kubeadm token create --print-join-command

# List / print defaults for cluster initialization
kubeadm config print init-defaults

# Check certificate expiration for Kubernetes cluster
kubeadm certs check-expiration

# Renew certificate
kubeadm renew <admin.conf|all|apiserver|apiserver-etcd-client|apiserver-kubelet-client|controller-manager.conf|etcd-healthcheck-client|etcd-peer|etcd-server|front-proxy-client|scheduler.conf>

# Check the upgrade plan
kubeadm upgrade plan

# Apply an upgrade
kubeadm upgrade apply <version>