Lab 1, step 20, host "reconnecting" and no kube-system containers

Hi. At this stage, after registering the ONAPVM as a host in rancher, I should see in it a number of containers in namespace kube-system. Instead I see the host oscillating between active and reconnecting, kubelet-1 trying to start unsuccessfully and nothing on the namespace. Any suggestion on what could be wrong? I have tried the whole lab twice -starting with a fresh VM- with the same results.