NAME

       zabbix-java-gateway.jar - Zabbix Java/JMX monitoring agent.

USAGE

       /etc/init.d/zabbix-java-gateway [ start|stop|restart|status ]

DESCRIPTION

       "Zabbix  Java  gateway"  is  a  daemon to collect information from JMX agent.  When Zabbix
       server wants to know the value of a particular JMX counter on a host, it asks Zabbix  Java
       gateway,  which uses the JMX management API to query the application of interest remotely.
       The application does not need any additional software installed, it just has to be started
       with "-Dcom.sun.management.jmxremote" option to Java on the command line.

       Java  gateway accepts incoming connection from Zabbix server or proxy and can only be used
       as a "passive proxy". As opposed to Zabbix proxy, it may also be used  from  Zabbix  proxy
       (Zabbix  proxies cannot be chained). Access to each Java gateway is configured directly in
       Zabbix server or proxy configuration file, thus only one Java gateway  may  be  configured
       per  Zabbix  server or Zabbix proxy. If a host will have items of type JMX agent and items
       of other type, only the JMX agent items will be passed to Java gateway for retrieval.

       When an item has to be updated over Java gateway, Zabbix server or proxy will  connect  to
       the  Java  gateway  and request the value, which Java gateway in turn retrieves and passes
       back to the server or proxy. As such, Java gateway does not cache any values.

       Zabbix server or proxy has a specific type of processes  that  connect  to  Java  gateway,
       controlled  by  the  option  "StartJavaPollers".  Internally, Java gateway starts multiple
       threads, controlled by the START_POLLERS option. On the server side, if a connection takes
       more  than  Timeout  seconds,  it will be terminated, but Java gateway might still be busy
       retrieving value from the JMX counter.

       Zabbix server or proxy will try to pool requests to a single JMX target together  as  much
       as  possible  (affected  by  item intervals) and send them to the Java Gateway in a single
       connection for better performance.

       It is suggested to have "StartJavaPollers" less than or equal to START_POLLERS,  otherwise
       there  might  be  situations  when no threads are available in the Java gateway to service
       incoming requests.

OPTIONS

       -V, --version
              Display version number.

JAVA OPTIONS

       zabbix-java-gateway.jar recognises the following Java options:

       -Dzabbix.pidFile

       -Dlogback.configurationFile
              Example: -Dlogback.configurationFile=/etc/zabbix/logback.xml

       -Dzabbix.listenIP

       -Dzabbix.listenPort

       -Dzabbix.startPollers

CONFIGURATION FILES

       /etc/zabbix/logback.xml
              Logging configuration.

       /etc/zabbix/zabbix_java_gateway.conf
              Miscellaneous parameters.

SEE ALSO

           <https://www.zabbix.com/documentation/5.0/manual/config/items/itemtypes/jmx_monitoring>

           <https://www.zabbix.com/documentation/5.0/manual/concepts/java>