[JBoss-user] [Management, JMX/JBoss] - Re: JMX/SNMP newbie question

[<dim...@jb...>]

There is actually such an MBean:

(look in deploy/monitoring-service.xml)


  |   <mbean code="org.jboss.monitor.services.MemoryMonitor"
  |          name="jboss.monitor:service=MemoryMonitor">
  |          
  |     <attribute name="FreeMemoryWarningThreshold">17m</attribute>
  |     <attribute name="FreeMemoryCriticalThreshold">16m</attribute>    
  |   </mbean>
  | 

There is a problem with it, if you want to use it in conjuction with the snmp-adaptor, in that it produces the same notification type (jboss.alarm.memory.low) but with a different severity level to indicate the setting or the seizure of the alarm.

  |    public static final int SEVERITY_NORMAL   = 0;
  |    public static final int SEVERITY_WARNING  = 1;
  |    public static final int SEVERITY_MINOR    = 2;
  |    public static final int SEVERITY_MAJOR    = 3;
  |    public static final int SEVERITY_CRITICAL = 4;   
  |    public static final int SEVERITY_UNKNOWN  = 5;
  | 
So you can't only rely on the notification type only to indicate the low-memory condition.

This was the first effort of actually having a "stateful" alarm in jboss, something that would go into an active alarm table.

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