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

id, title, sidebar_label, keywords

id	title	sidebar_label	keywords
dm	Monitoring DM database	DM Database	open source monitoring tool open source database monitoring tool monitoring DM database metrics

Collect and monitor the general performance metrics of the DM database. DM8+ is supported.

Configuration parameters

Parameter name	Parameter help description
Monitor Host	Monitored peer IPV4, IPV6 or domain name. Note ⚠️ without protocol headers (eg: https://, http://).
Monitor Name	Identifies the name of this monitor. The name needs to be unique.
Port	The port provided by the database externally, the default is 5236.
Query Timeout	Set the timeout when the SQL query does not respond to data, in ms milliseconds, the default is 3000 milliseconds.
database name	database instance name, optional.
username	database connection username, optional
password	database connection password, optional
URL	Database connection URL, optional
Collection Interval	Monitor periodical collection data interval, in seconds, the minimum interval that can be set is 30 seconds
Whether to detect	Whether to detect and check the availability of monitoring before adding monitoring, and then continue to add and modify operations if the detection is successful
Description Remarks	More remarks that identify and describe this monitoring, users can remark information here

Collect metrics

Metric collection: basic

Metric Name	Metric Unit	Metric Help Description
PORT_NUM	None	Database exposed service port
CTL_PATH	None	Control File Path
MAX_SESSIONS	None	Maximum database connections

Metric collection: status

Metric Name	Metric Unit	Metric Help Description
status$	None	Open/Close status of DM database

Metric collection: thread

Metric Name	Metric Unit	Metric Help Description
dm_sql_thd	None	Thread for writing dmsql dmserver
dm_io_thd	None	IO threads, controlled by IO_THR_GROUPS parameter, default is 2 threads
dm_quit_thd	None	Thread used to perform a graceful shutdown of the database