NtpMonitor

The NTP monitor tests for NTP service availability. During the poll an NTP request query packet is generated. If a response is received, it is parsed and validated. If the response is a valid NTP response, the service is considered available.

Monitor Facts

Class Name

org.opennms.netmgt.poller.monitors.NtpMonitor

Remote Enabled

true

Configuration and Use

Table 1. Monitor specific parameters for the NtpMonitor
Parameter	Description	Required	Default value
`port`	The destination port where the NTP request shall be sent.	optional	`123`
`retry`	Number of attempts to get a response.	optional	`0`
`timeout`	Time in milliseconds to wait for a response.	optional	`5000`

This monitor implements the Common Configuration Parameters.

Examples

<!-- Fast NTP server -->
<service name="NTP" interval="300000" user-defined="false" status="on">
  <parameter key="retry" value="2"/>
  <parameter key="timeout" value="1000"/>
  <parameter key="rrd-repository" value="/var/lib/opennms/rrd/response"/>
  <parameter key="rrd-base-name" value="ntp"/>
  <parameter key="ds-name" value="ntp"/>
</service>
<monitor service="NTP" class-name="org.opennms.netmgt.poller.monitors.NtpMonitor"/>