[root@localhost ~]# yum install -y ntp

同步网络时间

[root@localhost ~]# ntpdate time.windows.com

常用网络时间服务器有

time.windows.com

ntp.fudan.edu.cn

time.nist.gov

time-nw.nist.gov

time-a.nist.gov

time-b.nist.gov