MetricsHub
MetricsHub Enterprise 2.1.00
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JMX CLI Documentation
JMX[1] (Java Management Extensions) is a standard API for monitoring and managing resources such as applications, devices, and services. It is widely used for accessing Java Virtual Machine (JVM) metrics and MBeans (Managed Beans).
The MetricsHub JMX CLI allows users to query MBeans from a JMX server to fetch attributes, filter key properties, and extract JVM metrics.
Syntax
jmxcli <HOSTNAME> --object-name <OBJECT_NAME> [--port <PORT>] [--username <USERNAME>] [--password <PASSWORD>] [--timeout <TIMEOUT>] [--attributes <ATTRIBUTES>] [--key-properties <KEY_PROPERTIES>] [-v]
Options
Option | Description | Default Value |
---|---|---|
HOSTNAME |
Hostname or IP address of the JMX server. | None (required) |
--object-name |
JMX MBean object name or pattern (e.g., java.lang:type=Memory ). |
None (required) |
--port |
Port number for the JMX server. | 1099 |
--username |
Username for JMX authentication. | None |
--password |
Password for JMX authentication. If not provided, the CLI prompts interactively. | None |
--timeout |
Timeout in seconds for the JMX request. | 30 |
--attributes |
Comma-separated list of attributes to fetch from the MBean. | None |
--key-properties |
Comma-separated list of key properties to include in the result set. | None |
-v |
Enables verbose mode. Repeat (-vv ) for increased verbosity. |
None |
-h, -?, --help |
Displays detailed help information. | None |
Examples
Example 1: Querying Cassandra Metrics with JMX
jmxcli cassandra-01 --port 7199 --timeout 60s \
--object-name org.apache.cassandra.metrics:type=Table,keyspace=system,scope=*,name=TotalDiskSpaceUsed \
--key-properties scope \
--attributes Count
Example 2: Querying a JVM's Runtime Attributes
jmxcli jvm-host --object-name java.lang:type=Runtime --attributes Uptime,StartTime
Example 3: JMX Query with Authentication and Interactive Password Prompt
jmxcli app-host --username monitor --object-name java.lang:type=Threading --attributes ThreadCount,PeakThreadCount --timeout 45
If the --password
option is omitted, the CLI prompts securely for the password.
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