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Hardware clock time setting with NTP

+1 vote

I would like to sync my CentOS 6.3 hardware clock time to my NTP server's time. Can I do that without reboot the hosts?

Does anyone has the steps to do that?

posted Dec 2, 2013 by Seema Siddique

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3 Answers

+2 votes

Following are the steps

service ntpd restart

Before doing ntpdate adjust the clock to within a minute of network time. Otherwise it will take some time to adjust. Hope it helps.

answer Dec 2, 2013 by Satish Mishra
+1 vote

Try this using root privs:

/etc/init.d/ntpd stop
/usr/sbin/ntpdate # (or any other local public ntp server)
/sbin/hwclock --systohc
/etc/init.d/ntpd start
answer Dec 2, 2013 by Anderson
+1 vote

I suggest to use the client way to sync your time. Compared to the ntpd way it will not listen on specific network port. Client way means using the /etc/rc.d/init.d/ntpdate service configured in /etc/ntp/step-tickers and /etc/sysconfig/ntpdate. Enabled it via

$ chkconfig ntpdate on && service ntpdate start
answer Dec 2, 2013 by Bob Wise
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