What is NTP?
NTP is stand for Network Time Protocol. It is used for synchronizing the clocks of computer systems over packet-switched, variable-latency data networks. NTP uses UDP on port 123 as its transport layer.
Keeping the date/time synchronized throughout all computers / servers is really necessary. Solaris already comes with the ntp daemon, called "xntpd".
- Check whether NTP daemon is already running / not
root@server:~# svcs -a | grep ntp
disabled May_11 svc:/network/ntp:default
- If its not running, please create/edit the config file in /etc/inet/ntp.conf. The contents should be similar as below.
root@server:~# cat /etc/inet/ntp.conf
# ident "@(#)ntp.server 1.7 03/01/17 SMI"
#
# Copyright 1996-2003 Sun Microsystems, Inc. All rights reserved.
# Use is subject to license terms.
# List your ntp server address here. You may set one of the server as preferred.
server 0.pool.ntp.org prefer
server 1.pool.ntp.org
server 2.pool.ntp.org
server pool.ntp.org
driftfile /var/ntp/ntp.drift
statsdir /var/ntp/ntpstats/
filegen peerstats file peerstats type day enable
filegen loopstats file loopstats type day enable
filegen clockstats file clockstats type day enable
root@server:~# svcadm enable ntp
- Check for any error message
root@server:~# tail -f /var/adm/messages
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