HP-UX UNIX Configure an NTP Server

To configure an NTP (Network Time Protocol) server on an HP-UX system, you will need to follow these steps:

1. Install the NTP daemon (ntpd) and the NTP utilities (ntpq and ntpdc). The ntpd daemon is responsible for synchronizing the system clock with NTP servers, and the ntpq and ntpdc utilities are used to query and configure the NTP daemon. To install the NTP daemon and utilities, you can use the swinstall command with the -s option to specify the depot or media where the software is located. For example:

swinstall -s /path/to/depot ntp

2. Edit the NTP configuration file (/etc/ntp.conf) to specify the NTP servers that the NTP daemon should use to synchronize the system clock. You can specify multiple NTP servers by adding one server line for each server. For example:

server 0.us.pool.ntp.org
server 1.us.pool.ntp.org
server 2.us.pool.ntp.org
server 3.us.pool.ntp.org

The pool.ntp.org domain is a round-robin DNS service that will automatically select a nearby NTP server for you. You can also specify specific NTP servers by their hostname or IP address.

3. Enable the NTP daemon to start automatically at boot time. To do this, you can use the chkconfig command to set the ntpd daemon to the on state. For example:

chkconfig ntpd on

4. Start the NTP daemon. To start the NTP daemon, you can use the startsrc command with the -s option to specify the daemon name. For example:

startsrc -s ntpd

5. Monitor the NTP daemon to make sure it is synchronizing the system clock correctly. You can use the ntpq utility to query the NTP daemon and check the status of the NTP servers. For example:

ntpq -p

This will show you a list of the NTP servers that the NTP daemon is using, along with the status of each server. You can also use the ntpdc utility to get more detailed information about the NTP daemon and the servers it is using.