easy ntp time sync between servers

Choose one server from which time need to be synced .

then on clinet open  /etc/ntp.conf

#server 0.rhel.pool.ntp.org ( comment these three lines )
#server 1.rhel.pool.ntp.org
#server 2.rhel.pool.ntp.org
server 10.10.10.180  ( this is the server which i choose so all other servers will be in sync with this server )

 /usr/sbin/ntpdate -s -b -p 8 -u 10.10.10.180

/etc/init.d/ntpd restart

Other commands that are used for NTP are 

ntpdate -u 10.10.10.180

output : ntpdate[13786]: adjust time server 10.10.10.180 offset 0.000221 sec

ntpdate -d 10.10.10.180 

output : output will be more in detail

ntpdate[13806]: ntpdate 4.2.2p1@1.1570-o Thu Nov 26 11:34:35 UTC 2009 (1)

Looking for host 10.10.10.180 and service ntp

host found : 10.10.10.180

transmit(10.10.10.180)

receive(10.10.10.180)

transmit(10.10.10.180)

receive(10.10.10.180)

transmit(10.10.10.180)

receive(10.10.10.180)

transmit(10.10.10.180)

receive(10.10.10.180)

transmit(10.10.10.180)

server 10.10.10.180, port 123

stratum 3, precision -20, leap 00, trust 000

refid [10.10.10.180], delay 0.02583, dispersion 0.00000

transmitted 4, in filter 4

reference time:    d5b8497a.219236b6  Fri, Aug 16 2013 12:17:22.131

originate timestamp: d5b849c8.3769d786  Fri, Aug 16 2013 12:18:40.216

transmit timestamp:  d5b849c8.37669489  Fri, Aug 16 2013 12:18:40.216

filter delay:  0.02588  0.02585  0.02585  0.02583

         0.00000  0.00000  0.00000  0.00000

filter offset: -0.00006 -0.00007 -0.00006 -0.00007

         0.000000 0.000000 0.000000 0.000000

delay 0.02583, dispersion 0.00000

offset -0.000070

16 Aug 12:18:40 ntpdate[13806]: adjust time server 10.10.10.180 offset -0.000070 sec

ntpq -p