How to configure NTP Server

[root@upload2 ~]# yum -y install ntp
[root@upload2 ~]# vim /etc/ntp.conf

 

# line 19: add the network range you allow to receive requests

restrict 10.0.0.0 mask 255.255.255.0 nomodify notrap

 

# change servers for synchronization

 

#server 0.rhel.pool.ntp.org

#server 1.rhel.pool.ntp.org

#server 2.rhel.pool.ntp.org

 

server ntp1.jst.mfeed.ad.jp

server ntp2.jst.mfeed.ad.jp

server ntp3.jst.mfeed.ad.jp 

 

[root@upload2 ~]# /etc/rc.d/init.d/ntpd start
Starting ntpd:                                             [  OK  ]
[root@upload2 ~]# ntpq -p
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
 ntp1.jst.mfeed. 172.29.3.50      2 u   11   64    1  209.194  -112312   0.000
 ntp2.jst.mfeed. 172.29.2.50      2 u   11   64    1  191.529  -112304   0.000
 ntp3.jst.mfeed. 172.29.3.50      2 u   12   64    1  185.499  -112319   0.000
[root@upload2 ~]#