1. After successful installation using kuberadm, clear the screen data and the join command cannot be viewed. Use the following to re-check how the node joins the master node command :
kubeadm token create --print-join-command --ttl 0
2. Copy everything circled and enter the command on the node node as follows:
kubeadm join 192.168.164.30:6443 --token 7w50wn.hz6i2mdtv0ivzddm --discovery-token-ca-cert-hash sha256:7e244b4696b83819e37856610e5dac54804e69118f197d6c3d13e184d1db677b
The result after entering the command:
3. Summary: After successful installation, first copy the command to join the master node.