kubeadm In-Depth Reference

A structured reference for the kubeadm CLI — the Kubernetes cluster bootstrapping tool. Covers the command surface, the phase workflow system, the v1beta4 configuration API, certificate and token management, and the conceptual model behind cluster init/join/upgrade/reset. See https://kubernetes.io/docs/reference/setup-tools/kubeadm/.

Data Flow

kubeadm init (control-plane node)
  → preflight checks
    → PKI/cert generation        (/etc/kubernetes/pki)
      → kubeconfig generation    (/etc/kubernetes/*.conf)
        → static Pod manifests   (/etc/kubernetes/manifests)
          → kubelet starts control plane Pods
            → upload-config + bootstrap-token
              → addons (CoreDNS, kube-proxy)
                → join command printed