2.1yum install -y ntp ntpdate
2.2ntpdate 192.168.56.1
报错:
[root@vm1 ~]# ntpdate 192.168.56.1
3 Jan 13:31:47 ntpdate[28936]: no server suitable for synchronization found
测试外网成功
[root@vm2 ~]# ntpdate 0.asia.pool.ntp.org
3 Jan 13:40:16 ntpdate[9673]: step time server 133.243.238.243 offset 426.374232 sec
3.window关闭防火墙或者开放端口(UDP123)
[root@vm2 ~]# ntpdate 192.168.56.1
3 Jan 13:46:50 ntpdate[10540]: step time server 192.168.56.1 offset 0.924768 sec