NTP Configuration(Network Time Protocol)

Step 1 : Install the package for ntp
[root#] yum  install  ntp*

Step 2 :  Verify the packages
[root#]  rpmquery -qa | grep ntp
o/p:
fontpackages-filesystem-1.41-1.1.el6.noarch
ntp-4.2.4p8-2.el6.i686
ntpdate-4.2.4p8-2.el6.i686


Step 3: Get the current date and time
[root#] date
o/p:
Sun Jul 31 20:16:58 PDT 2016


Step 4 :  Using GUI navigate to System -  Administration - Date And Time Properties

** Synchronize Date and Time Over Network will be unchecked

Step 5 : Start the ntpd service
[root#] service ntpd start

Step 6 : Using GUI set proper date and time as well as Location

Step 7 :  Using GUI navigate to System -  Administration - Date And Time Properties

7.1     Check on Synchronize Date and Time Over Network 
7.2      Select first NTP server
           0.rhel.pool.ntp.org
7.3      In Advanved Options Check on "Speed Up Initial Synchronization"
7.4     Click OK
o/p:
Starting NTP Service

Step 8 : ReStart the ntpd service
[root#] service ntpd restart

Step 9: Get the current date and time
[root#]date
o/p:
Sun Aug 01 08:16:58 PDT 2016