Linux clock synchronization

1, Environment Introduction:

Set the time synchronization under root user rights

Standard clock synchronization

3 Sets of equipment

Ip	Node	Role
192.168.128	Master Node	NTPD server for synchronizing standard time with external public ntpd
192.168.129	Alternate Master Node	NTPD client, for synchronizing time with NTPD
192.168.130	Child nodes	NTPD client, for synchronizing time with NTPD

2.NTP clock synchronization setup Step

Check that the NTP service is installed.

The following appears to indicate that the installation was successful.

If it is not installed: Yum-y install NTP.

Then: Service ntpd restart

3, configure the NTPD server, is the network synchronization time of the machine: 192.168.9.128; Synchronize the external network time to the server machine before configuration: Ntpdate-u cn.pool.ntp.org;

Modifying a server configuration file

Vim/etc/ntp.conf

Add the following two items: This set to its own IP last one to write 0;

This also needs to be configured in the back, which is fixed:

The NTP server modification ends here.

Restart Services: Service ntpd restart.

Ntpstat indicates that the server time has been synchronized with the external network.

Configures the client's time synchronization (192.168.9.129/130). The same is to modify the vim/etc/ntp.conf, only to modify these lines. Save exit. Then, Ntpstat.

5, the last reboot server. Time synchronization OK.

Linux clock synchronization