设置ntp服务开机启动
service ntpd start
chkconfig ntpd on
修改服务端
vim /etc/ntp.conf
server 0.cn.pool.ntp.org iburst
server 1.cn.pool.ntp.org iburst
server 2.cn.pool.ntp.org iburst
server 3.cn.pool.ntp.org iburst
修改客户端服务器
vim /etc/ntp.conf
server 10.28.207.220
#server 0.centos.pool.ntp.org iburst
#server 1.centos.pool.ntp.org iburst
#server 2.centos.pool.ntp.org iburst
#server 3.centos.pool.ntp.org iburst
ntpdc -c loopinfo
ntpq -p