Linux NTP service Setup

Background:

When the server is more, the time is accurate or not, the consistency is a problem. So it is necessary to unify the time.

Here's how to configure a Linux time server within a LAN.

Configuration environment and requirements:

1. Assume that the Linux machine with IP 192.168.1.201 is the time server in the 192.168.1.0 network segment.

2.192.168.1.201 server can Sisu network, can be synchronized with the more authoritative public network time server.

3. Other machines in the same network segment automatically synchronize time to 192.168.1.201 every minute.

Preparation method:

1. Yum Install ntpdate-y download NTP

/ETC/INIT.D/NTPD Start Open ntpd

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2. cd/etc CP ntp.conf Ntp.conf.bak backup NTP configuration file

Vim (vi) ntp.conf then you can see there are four rows of server

Edit the first line to server time.windows.com and then save the exit.

Then/etc/init.d/ntpd restart Restart NTPD

Can see if the time has changed (of course, if your time is incorrect)

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3. You can now configure other servers to connect to the 192.168.1.201

Yum install ntpdate-y download NTP

/ETC/INIT.D/NTPD Start Open ntpd

Set a timed task

Crontab-e

*/1 * * * */usr/sbin/ntpdate 192.168.1.201 >>/tmp/log

Synchronize with 192.168.1.201 server every minute and enter into/tmp/log

Then wait a little while to see the results.

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Of course, the 2 machine time synchronized with the 192.168.1.201 host is the best error. Otherwise it's not good to compare.

The following is the log

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Time also synchronized well. Logs are also available. So everything is fine.

Linux NTP service Setup