RHQ Feature updates or bugs?

David A. Webster DAWEBSTER at UP.COM
Tue May 10 17:08:17 UTC 2011


>> Am 09.05.2011 um 22:50 schrieb Ian Springer:
>>>>                  pluginConfiguration.put(new 
PropertySimple(JMXDiscoveryComponent.CONNECTION_TYPE,
>>>>                      LocalVMTypeDescriptor.class.getName()));
>>> I thought the LocalVMTypeDescriptor conn type was for when the managed
>>> JMX server was inside the same process as the RHQ plugin container, at
>> It works for the Hadoop plugin, where all the hadoop processes are 
outside the VM.
>>
>>

>I checked the EMS source code and indeed it using the Java Attach API to 
discover all VMs on the local machine. I always assumed the "Local" in 
the connection type classname meant "local to the JVM", but apparently 
it actually means "local to the machine". For anyone else that's curious 
what EMS does under the covers to discover the JVMs, the meat of the 
code is in this class:

Entered a Bug report, 703557, and attached the plugin we wrote.  Compare 
that to what you are doing here, probably the same general approach.  Also 
added a request for a Tomcat Datasource support in the tomcat plugin, with 
an attached plugin that does that....bug 703562 

David Webster
Union Pacific Railroad
Lead Architect-Web Infrastructure
Systems Engineering
Phone: (402) 544-1094 | Email: dawebster at up.com
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