$ k8scalc compare kubeadm rke2
kubeadm vs RKE2
kubeadm vs RKE2 (Rancher Government) — compare security hardening, setup complexity, FIPS compliance, and production suitability for self-managed Kubernetes clusters.
Verdict
RKE2 wins on security hardening and operational automation — it ships CIS benchmark-hardened by default, bundles containerd, and handles etcd internally. kubeadm gives you pure upstream Kubernetes with maximum vendor neutrality and the widest community documentation. For government and compliance use cases (FIPS 140-2), RKE2 is the clear choice. For open-source purists and maximum control, kubeadm. RKE2 is also the better choice if you're already in the Rancher ecosystem.
Related tool
K8s Cluster Cost
Calculate the monthly cost of running a self-managed Kubernetes cluster on Hetzner Cloud, Vultr, or DigitalOcean. Choose server types for control planes, workers, and load balancers with HA mode.