Xntpd Installation for Linux/Alpha
On the master node:
For slave nodes:
xntp3-5.93.alpha.rpm (from the RedHat 5.1 CD) must be installed.
The files installed on the machine are here.
xntpd is configured to get the time from 220.127.116.11 and broadcast
to the slaves via 192.168.2.255 as shown in the configuration file
/etc/ntp.conf listed here.
/etc/rc.d/init.d/xntpd must be slightly
modified so that xntpd will write a log file. This file has
been chosen to be /var/log/xntpd.log
ntpdate does not seem to function under Linux/Alpha (thus one of
the modifications in /etc/rc.d/init.d/xntpd), so keep the boot-up
script S99rdate (recall: this script occurs in runlevels
3 and 5). However, the internal clock should be set before
starting xntpd. Move S99rdate to S98rdate and
create the following links:
/etc/rc.d/rc[3,5].d/S99xntpd -> /etc/rc.d/init.d/xntpd
xntpd must also be killed when the machine is shut down; therefore,
create the following link:
/etc/rc.d/rc6.d/K08xntpd -> /etc/rc.d/init.d/xntpd
xntpd is now configured to run on the master node.
IMPORTANT: xntpd is rather picky when it comes to bringing
clocks into sync when they are already fairly out of whack...no estimate
on exactly what out of whack means. xntpd will die in this
case; therefore, it is good policy to set the local clock from your ntp
server prior to starting xntpd. This would be 18.104.22.168
in the case of the master and 192.168.2.1 for slaves.
The files listed here were copied to
the appropriate locations in /nfsr/nfsr5.1
for the slaves is different than for the master since the slaves are only
configured to be broadcast clients listening to 192.168.2.255 so
don't forget to modify it after copying it to the nfsr directories!
The start-up and kill script links created above for the master are also
created in the nfsr directories. S99rdate is moved to S98rdate, as
To copy the files onto the slaves, either reclone the slaves or write a
script which tells each slave to remotely copy only the necessary files.