File: //etc/ntp.conf
# ntp.conf: Managed by puppet.
#
disable monitor
statsdir /var/log/ntpstats
# Permit time synchronization with our time source, but do not
# permit the source to query or modify the service on this system.
restrict default kod nomodify notrap nopeer noquery
restrict -6 default kod nomodify notrap nopeer noquery
restrict 127.0.0.1
restrict -6 ::1
# Set up servers for ntpd with next options:
# server - IP address or DNS name of upstream NTP server
# burst - send a burst of eight packets instead of the usual one.
# iburst - allow send sync packages faster if upstream unavailable
# prefer - select preferrable server
# minpoll - set minimal update frequency
# maxpoll - set maximal update frequency
# noselect - do not sync with this server
server 0.centos.pool.ntp.org
server 1.centos.pool.ntp.org
server 2.centos.pool.ntp.org
# Driftfile.
driftfile /var/lib/ntp/drift