How to join new node to exist cluster?

[codyzhang]

#vi host.ini

[master]
192.168.0.38

[node]
192.168.0.4
192.168.0.20 (new node)
192.168.0.17

[kube-cluster:children]
master
node

kubeadm-ansible]# ansible-playbook site.yaml

TASK [kubernetes/node : Join to Kubernetes cluster] ***********************************************************************************************************************
Friday 20 December 2019 04:56:28 +0200 (0:00:00.842) 0:01:45.157 *******
fatal: [192.168.0.20]: FAILED! => {"changed": true, "cmd": "kubeadm join --token b0f7b8.8d1767876297d85c --discovery-token-unsafe-skip-ca-verification 192.168.0.38:6443\n", "delta": "0:05:00.4}

.......
........
PLAY RECAP ****************************************************************************************************************************************************************
192.168.0.17 : ok=20 changed=3 unreachable=0 failed=0 skipped=28 rescued=0 ignored=0
192.168.0.20 : ok=21 changed=14 unreachable=0 failed=1 skipped=27 rescued=0 ignored=0
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