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JVM Actuator

Monitoring Connector Assets​

Monitored Objects​

The Pack collects metrics for:

  • Class
  • Memory
  • System (cpu, load-average, fd)
  • Threads

Collected Metrics​

Metric nameDescriptionUnit
class.loaded.current.countCurrent number of classes loaded
class.unloaded.countNumber of classes unloaded


Please install Spring Boot Actuator module: Ask to your admin to deploy it and give you the URL.


  1. Install the Centreon Plugin on every Poller:
yum install centreon-plugin-Applications-Jvm-Actuator
  1. On the Centreon Web interface in Configuration > Monitoring Connector Manager, install the JVM Actuator Pack

Host configuration​

  • Add a new Host and apply the App-Jvm-Actuator-custom Host Template

Once the template applied, some Macros have to be configured:

XACTUATORCUSTOMMODECustom mode to get metrics (Default: standard)
XACTUATORAPIPORTPort used (Default: 8080)
XACTUATORAPIPROTOSpecify https if needed (Default: http)
XACTUATORAPIURLPATHApi endpoint (Default: /actuator)
ACTUATORAPIEXTRAOPTIONSAny extra option you may want to add to the command (eg. a --verbose flag)

To monitor centreon-map JVM, please use following macro values:

ACTUATORAPIUSERNAMEApi username must be set
ACTUATORAPIPASSWORDApi password must be set

How to test the Plugin and what are the main options for?​

Once the Plugin installed, log into your Poller using the centreon-engine user account and test by running the following command:

/usr/lib/centreon/plugins/ \
--plugin=apps::java::jvm::actuator::plugin \
--custommode=standard \
--mode=class-count \
--hostname='' \
--port='8080' \
--proto='http' \

Output example:

OK: Class current: 6486, unloaded: 38 | 'class.loaded.current.count'=6486;;;0; 'class.unloaded.count'=38;;;0;

The command above monitors JVM class usage (--mode=class-count). It connects to the host (--hostname='') on the port 8080 (--port='8080') using http (--proto='http').

All the options that can be used with this plugin can be found over the --help command:

/usr/lib/centreon/plugins/ \
--plugin=apps::java::jvm::actuator::plugin \
--custommode=standard \
--mode=class-count \


Troubleshooting plugins