rancher官方地址
https://www.rancher.com/
https://www.rancher.cn/ ###国内地址
https://github.com/rancher/rancher
https://github.com/rancher/os ###ranchos地址
https://github.com/rancher/os/releases
https://github.com/rancher/rke ###rancher kubernetes engine(RKE)
https://github.com/rancher/k3s
https://github.com/rancher/k3os
官方文档指导
https://rancher.com/docs/
https://docs.rancher.cn/