Unsure how to install Rancher on k3s

[vincent]

Error install Rancher HA in K3s

As it says, the current version of Rancher does not support Kubernetes 1.20. Support will be added in an upcoming release. curl https://get.k3s.io | INSTALL_K3S_VERSION=v1.19.7+k3s1 sh - will install 1.19 instead.