apache--hertzbeat/home/docs/help/dns.md

id, title, sidebar_label, keywords

id	title	sidebar_label	keywords
dns	Monitoring DNS	DNS Monitor	open source monitoring tool open source DNS monitoring tool monitoring DNS metrics

Collect and monitor the general performance Metrics of DNS.

Protocol Use：DNS

Configuration parameter

Parameter name	Parameter help description
Monitoring Host	Monitored IPV4, IPV6. Note⚠️Without protocol header (eg: https://, http://).
Monitoring name	Identify the name of this monitoring. The name needs to be unique.
Monitoring port	The port for DNS service provided to the outside,default is 53.
Address For DNS	The address for domain name resolution.
Connect Timeout	Set the timeout for connecting to the DNS server, default is 6000 milliseconds.
Record Type	The type of DNS record to query. Optional values include A, AAAA, MX, NS, SRV, and ANY.
Query Class	Resource class for DNS query. Optional values include IN, CHAOS, HESIOD, NONE, and ANY,default is IN.
Use TCP Protocol	DNS queries use the TCP protocol.
Collection interval	Interval time of monitor periodic data collection, unit: second, and the minimum interval that can be set is 30 seconds.
Bind Tags	Used to classify and manage monitoring resources.
Description remarks	For more information about identifying and describing this monitoring, users can note information here.

Collection Metrics

Metrics Set：Header

Metric name	Metric unit	Metric help description
Response Time	ms	Time taken for DNS server to respond to requests.
Opcode	none	Type of the current message.
Response Status	none	Status code of the response.
Response Flags	none	Response flags.
Question Record Count	none	Number of question records.
Answer Record Count	none	Number of answer records.
Authority Record Count	none	Number of authoritative resource records.
Additional Record Count	none	Number of additional resource records.

Metrics Set: Question

Metric name	Metric unit	Metric help description
Section	none	Question record information, including the queried domain name, resource type, resource record class, and additional information.

Metrics Set: Answer

Metric name	Metric unit	Metric help description
Section0	none	Answer record information, including the queried domain name, TTL, resource record class, resource type, and query result.

The metric set collects up to 10 records, with metric names from Section0 to Section9.

Metrics Set: Authority

Metric name	Metric unit	Metric help description
Section0	none	SOA (Start of Authority) record for the domain name, including queried domain name, TTL, resource type, resource record class, and other information.

The metric set collects up to 10 records, with metric names from Section0 to Section9.

Metrics Set: Additional

Metric name	Metric unit	Metric help description
Section0	none	Additional information for DNS queries.

The metric set collects up to 10 records, with metric names from Section0 to Section9.