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Configuring NTP on HP-UX

The idiosyncratic portion is modifying /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=

Where,

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

Make sure the NTP servers are also defined in  /etc/ntp.conf :

server nti1.firm.com
server nti2.firm.com
Where,

Restart HP-UX ntp service:
# /sbin/init.d/xntpd stop && /sbin/init.d/xntpd start

Watch out log file /var/adm/syslog/syslog.log for errors:
# tail -f /var/adm/syslog/syslog.log

If clock were not syncronized make sure xntpd is running:
# ps -ef | grep xntpd

Note: SAM can also be used to configure NTP service under HP-UX, just start SAM and open time window.


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[Dec 05, 2010] IT Resource Center forums - How to setup and configure NTP

Some notes:

Configuring an NTP Server

1. Modify the /etc/rc.config.d/netdaemons file to configure xntpd daemon. Set XNTPD=1. export NTPDATE_SERVER= export XNTPD=1 export XNTPD_ARGS=

2. Modify /etc/TIMEZONE file. See /usr/lib/tztab for a list of all available time zones. TZ=CST6CDT export TZ

3. Modify /etc/ntp.conf file and define NTP server.

4. Run the xntpd daemon manually. #/sbin/init.d xntpd start

5. Wait. It could take up to 6 minutes for the xntpd daemon to start.

6. Verify the NTP server configuration (and its association with peer servers) by executing the command: #ntpq -p

Configuring an NTP Client

1. Modify the /etc/rc.config.d/netdaemons file on all clients and servers. export NTPDATE_SERVER=√ʬ?¬�server1 server2√ʬ?¬? export XNTPD=1 export XNTPD_ARGS=

2. Modify /etc/TIMEZONE file. See /usr/lib/tztab for a list of all available time zones. TZ=CST6CDT export TZ

3. Modify /etc/ntp.conf file and define NTP client.

4. Run the xntpd daemon manually. #/sbin/init.d xntpd start Wait. It could take up to 6 minutes for the xntpd daemon to establish an association with the corresponding NTP servers and peers.

6. Verify the NTP server configuration (and its association with peer servers) by executing the command: #nt

Test configuration with:

ntpq -p

In case you are using a server that uses its internal clock, its ntp.conf should look like:

server 127.127.1.1 fudge 127.127.1.1 stratum=10

For the clients you can have the entries in ntp.conf:

broadcastclient=yes driftfile /etc/ntp.drift

or

server server_name driftfile /etc/ntp.drift

Hi, ntp is the network time protocol service while xntpd is nothing but the daemon which is must to run the ntp service. In Your case. Login as root to Pluto server and: 1) Edit " /etc/rc.config.d/netdaemons " file on the Pluto Server as follows : export NTPDATE_SERVER= export XNTPD=1 export XNTPD_ARGS=

2)Edit " /etc/ntp.conf " file in the pluto server with the below entries at the end of the file :

server <Give the IP address of Pluto> 3) To Maually start xntpd daemon : # /sbin/init.d/xntpd start ON Jupiter side :

1)Edit " /etc/rc.config.d/netdaemons " file on the clients side as follows : export NTPDATE_SERVER=<Give the IP address of PlutoServer> export XNTPD=1 export XNTPD_ARGS= 2)Edit " /etc/ntp.conf " file on the Jupiter server and add below entries at the end of the file: server <IP Address of Pluto> 3)#/sbin/init.d/xntpd start

In case the time synchronisation doesn't start it will definately start at the reboot of respective servers. 95 % it will start w/o reboot.



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