1 node for inatall k3sup, 3 nodes as a k3s cluster
git clone https://github.com/sufuf3/k3sup-lab.git
cd k3sup-lab/ && sh deploy-vagrant.sh
# vagrant ssh k3sup-host
vagrant@ubuntu-bionic:~$ kubectl get no
NAME STATUS ROLES AGE VERSION
node-2 Ready worker 40m v1.15.4-k3s.1
node-1 Ready worker 45m v1.15.4-k3s.1
k3sup-master Ready master 47m v1.15.4-k3s.1