RKE1 (Rancher Kubernetes Engine 1) was Rancher’s first way of automatically deploying Kubernetes to a cluster. Think of it like minikube or on-prem EKS or K3s. Three years ago, it was marked as end of life (EoL) with the last release being July 2025. They have no migration guide and their strategy is just rebuild the cluster. I have 3 nodes a bunch of services running in Kubernetes. I don’t want to take everything down and rebuild it all. Let’s rebuild it while the plane is in the air.