1)      

[root@linuxrac1 sysconfig]#sed -i ‘s/OPTIONS/#OPTIONS/g‘ /etc/sysconfig/ntpd

2)      

[root@linuxrac1 sysconfig]#cat >> /etc/sysconfig/ntpd << EOF

> OPTIONS="-x -u ntp:ntp -p /var/run/ntpd.pid"

> EOF

3)      

[root@linuxrac1 sysconfig]#mv /etc/ntp.conf /etc/ntp.confbak

4)      

[root@linuxrac1 sysconfig]# cat > /etc/ntp.conf << EOF

> restrict 0.0.0.0 mask 0.0.0.0 nomodify

> server 127.127.1.0

> fudge 127.127.1.0 stratum 10

> driftfile /var/lib/ntp/drift

> broadcastdelay 0.008

> authenticate no

> keys /etc/ntp/keys

> EOF

1)      

[root@linuxrac2 sysconfig]# sed -i ‘s/OPTIONS/#OPTIONS/g‘ /etc/sysconfig/ntpd

2)      

[root@linuxrac2sysconfig]# cat >> /etc/sysconfig/ntpd << EOF

> OPTIONS="-x -u ntp:ntp -p /var/run/ntpd.pid"

> EOF

3)      

[root@linuxrac2 sysconfig]# mv /etc/ntp.conf /etc/ntp.confbak

4)      

[root@linuxrac2 sysconfig]# cat >> /etc/ntp.conf << XL

> restrict default kod nomodify notrap nopeer noquery

> restrict 10.10.97.0mask 255.255.255.0 nomodify notrap

> restrict 127.0.0.1

> server 10.10.97.168

> server 127.127.1.0 # local clock

> fudge 127.127.1.0 stratum 10

> driftfile /var/lib/ntp/drift

> broadcastdelay 0.008

> keys /etc/ntp/keys

> XL

[root@linuxrac1 etc] #service ntpd restart

[root@linuxrac1 etc] #chkconfig ntpd on