This section details the DNS metrics.

Table 1. DNS Metrics

Metric

Definition

Availability

If no value is specified for the pattern configuration option, the DNS service is considered to be available if the Hyperic agent can contact it, whether or not any Answers are returned. If an asterisk is specified for the pattern option, the service is considered available if at least one Answer is returned. If pattern is set to a substring or regular expression, the service is considered available if at least one Answer returned matches the expression. If Answers are returned that do not match the pattern, Availability is reported at the "Warning" level.

Response Time

Time in ms it took to determine availability.

Answers

Number of resource Record(s) which answer the question.

Authority Records

Number of Resource Record(s) which point to the domain authority.

Additional Records

Number of Resource Record(s) which may hold additional information