1, cd / etc / kubernetes /
2, in the current directory and its subdirectories to find the file that contains the 192.168.137.204
find . -type f |xargs grep 192.168.137.204 |awk '{print $1}' |sort |uniq
Ip address lookup to replace all the files to the new address
3, delete the original certificate
mv / etc / kubernetes / PKI /etc/kubernetes/pki.old
4, regenerate all the certificates
kubeadm init phase certs all
5, restart the service
service docker restart
service kubelet restart
6, you can view the certificate expiration date
kubeadm alpha certs check-expiration