Rancher maintains 2 Kubernetes distribution, both production grade:
- k3s: Single binary containing containerd backend. Can be run as server or agent on each node of cluster. SQLite is used by default instead of ETCD. MySQL and Postgres also supported. No prerequisity. Intended for edge computing.
- RKE: Deployed remotely over SSH on top of Docker which is the only required component of the underlying OS. Standard ETCD database in container. Each node and its roles are defined in YAML. Resource hungry, datacenter grade.