kubeadm token create --print-join-command
kubeadm join 192.168.3.168:6443 --token wm2waa.k5wkmh65bbmh8xm0 --discovery-token-ca-cert-hash sha256:1234e47f568a79c33eac7b7b947db460de0f94f5cc1cd941b7b73f8d208a456e
kubeadm token list
journalctl -f -u kubelet