Kubernetes : hostname regex failed

linux docker containers kubernetes hostname

You could use a different name other than the hostname with the --api-external-dns-names as described in the reference manual. E.g.:

kubeadm init --api-external-dns-names=kube.local

This should run just fine.

You could also change the hostname of your machine - you'll find plenty of ways to do that on SO too.

CodeHunter