HP XC System Software Administration Guide Version 2.1

3.7 NTP Service
The head node acts as the primary N etwork Time Protocol (NTP) internal server for all other
nodes in an HP XC system. Other nodes are NTP clients of the head no de.
You can specify where the NTP server obtains its time reference during the c o nfiguration
of the HP XC system; up to three external time servers are accepted if the internal server is
connected to an external network. You can also specify the internal server’s clock as the time
reference instead.
In the event that you encounter a clock synchronization problem, examine the
/etc/ntp.conf file on the internal server and the /etc/ntp.conf file on the node
that is experiencing the problem.
You can restart the NTP service (ntpd) with the following command:
# service ntpd restart
Other tools (ntpq and ntpdc) are also available. See the following manpages for more
information on NTP: ntpd
(1), ntpdc(1),andntpq(1).
Managing System Services 3-9