"kubeadm init" fails on setting up Highly Available clusters
While not being able to find a decent solution and created an issue in the original "kubeadm" project at github, see here: https://github.com/kubernetes/kubeadm/issues/1930 .
Since the "triage" suggested in the issue was not feasable (Ubuntu is pretty much "set") for me, I ended in setting up another Docker distribution, as described here: https://docs.docker.com/install/linux/docker-ce/ubuntu/ , purging installed distribution before starting the new setup.
While running Docker (Community) v19.03.5 through kubeadm v1.16.3 throws the following warning:
[WARNING SystemVerification]: this Docker version is not on the list of validated versions: 19.03.5. Latest validated version: 18.09the results are pretty fine, I managed to setup my ha cluster, as described in the original documentation.
So, this can be considered as a workaround, NOT as a solution to my original issue!