#!/bin/bash
#######################
# Override the default ntp.conf with one containing non-'pool' NTP servers.
# Only replaces the ntp.conf if it finds the 'pool' servers in the ntp.conf so
# it shouldn't matter if it is an upgrade or a new install.
#######################

grep pool /etc/ntp.conf &> /dev/null
if [ $? == 0 ]; then
cat >/etc/ntp.conf <<EOF
logfile /var/log/ntpd
driftfile /var/lib/ntp/ntp.drift
statsdir  /var/lib/ntp/
statistics loopstats peerstats clockstats
filegen loopstats file loopstats type day enable
filegen peerstats file peerstats type day enable
filegen clockstats file clockstats type day enable

# You should have at least 4 NTP servers

server owamp.chic.net.internet2.edu iburst
server owamp.hous.net.internet2.edu iburst
server owamp.losa.net.internet2.edu iburst
server owamp.newy.net.internet2.edu iburst
server chronos.es.net iburst
server saturn.es.net iburst
EOF
fi
