kubeadm
5 commands
5 shown
Init HA control-plane endpoint
Bootstrap HA cluster behind a LB VIP; --upload-certs shares CA for other masters
kubeadm init --control-plane-endpoint "<host>:6443" --upload-certs --pod-network-cidr=10.244.0.0/16
Print fresh join command
Generate a new token + ready-to-paste worker join line; default tokens expire in 24h
kubeadm token create --print-join-command
Check cert expiration
List all control-plane cert/kubeconfig expiry dates; catch silent apiserver outages early
kubeadm certs check-expiration
Renew all certs then restart
Renew every control-plane cert; note: restart static pods (mv manifests) for them to reload
kubeadm certs renew all && systemctl restart kubelet
Plan and apply upgrade
Preview available versions then upgrade control-plane; upgrade kubelet/kubectl separately after
kubeadm upgrade plan && kubeadm upgrade apply v1.30.2
no commands match