org.quartz.simpl.SystemPropertyInstanceIdGenerator is useful in environments that use initialization scripts or configuration files. For example, you could add the instanceId property to an application server's startup script in the form -Dorg.quartz.scheduler.instanceId=node1, where "node1" is the instance ID assigned to the local Quartz Scheduler scheduler. Or it could also be added to a configuration resource such as an XML file that is used to set up your environment.

The instanceId property values configured for each scheduler instance can be used in quartzLocality.properties node groups. For example, if you configured instance IDs node1, node2, and node3, you can use these IDs in node groups: