5.9 DNSDynaUpdateStat

Use this Knowledge Script to monitor DNS server dynamic update activity. This script raises an event if the dynamic update queue length exceeds the threshold you set. A long queue usually indicates that the DNS server is overloaded and cannot process the update in a timely manner.

The dynamic update mechanism allows clients and servers to register DNS domain names and IP address mappings to a DNS server.

5.9.1 Resource Object

DNS folder

5.9.2 Default Schedule

The default interval for this script is Every 10 minutes.

5.9.3 Setting Parameter Values

Set the following parameters as needed:

Parameter	How to Set It
Event?	Set to y to raise an event if the number of dynamic updates in the queue exceeds the threshold. The default is y.
Collect data?	Set to y to collect data for charts and reports. If enabled, data collection returns the queue length for dynamic updates. To further control the data returned, specify the data collection mode to use. By default, data is not collected.
Data collection mode to use	Specify the type of data you want to collect. The following entries are valid: 1 - to generate one datastream that records the update queue length. The data detail message describes the number updates received and written per second. 2 - to generate one datastream that records the update queue length, but without the detail message. 3 - to generate one datastream that tracks the update queue length, and three additional datastreams for the No Operation rate, the rate at which updates are being received, and the rate at which updates are being written to the database. The default is 1 (one datastream and detail message).
Dynamic update queue length	Specify the maximum number of dynamic updates that can be in the queue in an interval before an event is raised. The default is 5 updates.
Event severity	Set the event severity level, from 1 to 40, to indicate the importance of an event if the number of dynamic updates in the queue exceeds the threshold. The default is 8 (red event indicator).