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One, install ntp and ntpd
yum install -y ntp
yum install -y ntpd
[Note: you can’t download, you can search first]
Two, modify the configuration file
vi /etc/ntp.conf
Main node:
other nodes:
three, start
/bin/systemctl restart ntpd.service
service ntpd start
ntpstat #查看是否同步，这个过程可能要等一段时间
date #查看所有机器时间是否相同
Like this, it means successful synchronization
