192.168.1.30 do server time
192.168.1.40 synchronization 30
192.168.1.50 synchronization 30
step1. 30 on the machine modified ntp.conf
Add to:
restrict 192.168.1.0 mask 255.255.255.0 nomodify notrap
Description: The ah according to their own
Logout:
#server 0.rhel.pool.ntp.org iburst
#server 1.rhel.pool.ntp.org iburst
#server 2.rhel.pool.ntp.org iburst
#server 3.rhel.pool.ntp.org iburst
Add to:
server 127.127.1.0 # local clock
fudge 127.127.1.0 stratum 10
Guaranteed BIOS (motherboard) synchronized with the system time
vim /etc/sysconfig/ntpd
Add: SYNC_HWLOCK = yes
Start ntpd running processes
service ntpd start
service ntpd status - guarantee service starts
On 40 machine:
[root@saver1 ~]# ntpdate -u 192.168.1.30
28 Jul 13:03:37 ntpdate[2698]: step time server 192.168.1.30 offset 14401.695083 sec
On 50 machine:
[root@saver2 ~]# ntpdate -u 192.168.1.30
28 Jul 13:03:51 ntpdate[2663]: step time server 192.168.1.30 offset 14401.690938 sec
date view time has been synchronized
Configures the timer, timing synchronized with the clock server every minute
crontab -e
*/1 * * * * /usr/sbin/ntpdate 192.168.1.30
"Finish"