To sync a correct time on your Redhat server with a NTP publicly available time servers first you need to install ntpdate
package:
[root@rhel7 ~]# yum install ntpdate
To check your current time use date
command:
[root@rhel7 ~]# date Thu Sep 4 17:20:42 WST 2014
Next, we can use pool.ntp.org
timeserver to synchronize our time. This is be done with ntpdate
command:
[root@rhel7 ~]# ntpdate pool.ntp.org 11 Dec 06:08:13 ntpdate[2225]: step time server 173.230.144.109 offset 8426822.014383 sec
Confirm that time hase been synced correctly:
[root@rhel7 ~]# date Thu Dec 11 06:08:16 WST 2014