NTP - xntpd configuration in HPUX

xntpd server configuration

1. xntpd server (daemon) is used by HP-UX. Open the file /etc/rc.config.d/netdaemons:

# vi /etc/rc.config.d/netdaemons
Make sure following variables are defined and XNTPD is set to 1:
export NTPDATE_SERVER='ntp.mycorp.com pool.ntp.org in.pool.ntp.org'
export XNTPD=1
export XNTPD_ARGS=
Save and close the file. Where,

    * NTPDATE_SERVER : space-separated list of timeserver / IPs - If server uses the radio clock / system time, leave the NTPDATE_SERVER blank.
    * XNTPD : set it to 1 to enable NTP
    * XNTPD_ARGS : set options, see man page

2.Make sure correct timezone is setup in /etc/TIMEZONE file (look for TZ variable):

# vi /etc/TIMEZONE
Save and close the file.

3.Open /etc/ntp.conf file:

#vi /etc/ntp.conf
Make sure server are defined:
server unix-box-ntp
server delhi-ntp
peer delhi-noc-ntp
driftfile /etc/ntp.drift
Close and save the file. Where,

    * server : ntp server used (poll) to obtain time
    * peer : a peer relationship with another ntp server
    * driftfile : track local clock time (drift of the local clock)

4. Start HP-UX ntp service:
# /sbin/init.d/xntpd start
# /sbin/init.d/xntpd stop <-- stop ntp service

5.Verify that everything is working fine:

# ntpq -p
Watch out log file /var/adm/syslog/syslog.log for errors:
# tail -f /var/adm/syslog/syslog.log
Make sure xntpd is running:
# ps -ef | grep xntpd


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