how to change a single node cluster into a multi-node one

[Weaverzhu]

Is your feature request related to a problem? Please describe.

joining a worker node to an existing cluster running creating token failed.

https://github.com/k0sproject/k0s/issues/1284 k0s seems to forbidden a single node cluster adding a worker.

Describe the solution you would like

No response

Describe alternatives you've considered

is there anyway besides creating a compeletely new cluster?

Additional context

No response