The JVM Layer

The tests mapped to this layer report the overall health and resource usage of the eG manager's JVM. To pull out JVM-related statistics from the eG manager, the eG agent uses either of the following mechanisms:

  • Using SNMP-based access to the Java runtime MIB statistics of the eG manager;
  • By contacting the Java runtime (JRE) of the eG manager via JMX
  • This is why, each test mapped to the jvm layer provides administrators with the option to  pick a monitoring mode - i.e., either jmx or snmp. The remaining test configuration depends upon the mode chosen. Enabling SNMP Support for the eG Manager's JRE topic will explain how to enable SNMP support for the eG manager's JRE.

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Figure 1 : The tests mapped to the JVM layer