Linux clock synchronization and linux clock

Linux clock synchronization and linux clock

1. Environment Introduction:

Set Time Synchronization under root User Permissions

Standard Clock Synchronization

3 devices

IP	Node	Function
192.168.128	Master Node	Ntpd server, used to synchronize Standard Time with external public ntpd
192.168.129	Backup master node	Ntpd client, used to synchronize time with ntpd
192.168.130	Subnode	Ntpd client, used to synchronize time with ntpd

 

 

 

 

 

 

2,Ntp clock synchronization settings

Check whether the ntp service is installed.

If the following message is displayed, the installation is successful.

If not, run yum-y install ntp.

Then: service ntpd restart

3. Configure the ntpd server, that is, the machine with the synchronization time through the internet: 192.168.9.128; synchronize the Internet time to the server machine before the configuration: ntpdate-u cn.pool.ntp.org;

Modify the server configuration file

Vim/etc/ntp. conf

Add the following two items: Set it to the last bit of your IP address and write it to 0;

The configuration is also required later, which is fixed:

The ntp server has been modified so far.

Restart service: service ntpd restart.

Ntpstat indicates that the server time has been synchronized with the Internet.

Configure the Time Synchronization for the client (192.168.9.129/130 ). Modify vim/etc/ntp. conf. You only need to modify these lines. Save and exit. Then, ntpstat.

5. reboot server. Time Synchronization OK.