cluster add-worker works but the new node is not returned by kubectl get nodes

[lakano]

Hello,

I've just upgraded to 0.4 ( was on a very old version before, may be one year ago ), and I've added a new worker ( after a manual fix in my config.json to set the node_cidr value ).

After few minutes, I've got a success message ( « workers created successfully » ), but I can't find the new node in a « kubectl get nodes » from a master node, even after a reboot.

May be something haven't been correctly finished on the add-worker process. How can I finish to add it manually please?

EDIT:
some informations:
k8s version 1.10.0
3 masters + 4 workers. Trying to add a new one.
command used: hetzner-kube cluster add-worker --name project -n 1 --datacenters fsn1-dc14 --worker-server-type cx51