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 1