CODEWITHSUNDEEP
jmxjmxmp
user957183
user957183

Reputation: 437

JMX connection using JMXMP hangs

I'm trying to establish a JMX connection to my tomcat instance from a java client using the below code.

JMXServiceURL url = new MXServiceURL("service:jmx:jmxmp://<host>:<port>"); //line 1
JMXConnector jmxc = JMXConnectorFactory.connect(url);  //line 2
MBeanServerConnection mbsc = jmxc.getMBeanServerConnection();

Where

host = remote machine where my tomcat instance is running

port = jmx enabled port. In my code it is 9840

My tomcat setenv.sh file is edited with below configurations to enable JMX

export CATALINA_OPTS="-Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=9840 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false"

But, when i execute the program, it hangs at line 2.

If i change line 1 as JMXServiceURL target = new JMXServiceURL("service:jmx:rmi:///jndi/rmi://<host>:<port>/jmxrmi") to use RMI instead of JMXMP it executes and i'm able to access various MX beans.

So, i'm not able connect if i use JMXMP protocal. I'm able to connect if i use RMI protocol. What might have went wrong when i use JMXMP?

Thanks, nks

Upvotes: 0

Views: 2094

Answers (1)

Nicholas
Nicholas

Reputation: 16066

In order to use the JMXMP client, you need to be running the JMXMP Connector Server. It cannot connect to the [default] RMI Connector Server.

Also see this question for a JMXMP agent that you can install into a running server.

Upvotes: 3

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