Jmx-java Management Extensions

JMX Full name Java Management Extensions, which provides management extensions for Java applications. Introduced in Java 5

Concept

Name	Description
Mbean	All called managed beans, you can implement an Mbean to provide management content for JMX
MBean Server (also known as JMX Agent)	Provides centralized enrollment management Mbean capability to allow remote operation of Mbean via his agent
JMX Connectors	Allow remote access by implementing different communication protocols
Jconsole	A JMX graphics client that runs user access to local or remote JMX, which is included by default in the Java SDK tools

Referering Java Opts

Starting Java can give the JVM machine some parameters, such as setting the size of the running memory stack. Here is a list of some relevant parameters about JMX

Name of parameter	type	Description
-dcom.sun.management.jmxremote	Boolean	Whether remote JMX access is supported, by default True
-dcom.sun.management.jmxremote.port	Numerical	Monitoring port number for remote access
-dcom.sun.management.jmxremote.authenticate	Boolean	If you need to turn on user authentication, turn on by default
-dcom.sun.management.jmxremote.ssl	Boolean	If SSL encryption is turned on for the connection, it is turned on by default
-dcom.sun.management.jmxremote.access.file	Path	The path to the file that is authorized to access the user's permissions, the default pathJRE_HOME/lib/management/jmxremote.access
-dcom.sun.management.jmxremote. Password.file	Path	Set the user name and password of the access user, the default pathJRE_HOME/lib/management/ jmxremote.password

For example, you need to start a springboot program that is resident in the background (such as App.jar), how to open a JMX that supports remote access, and you can try the following command

Java---dcom.sun.management.jmxremote.port=- dcom.sun.management.jmxremote.authenticate=-dcom.sun.management.jmxremote.ssl=false

For the parameters related to JMX you configure this enough, you can use the Jconsole connection,

The JDK's own monitoring tools are: 1, jconsole2, JVISUALVM

Jmx-java Management Extensions