The features for integrating JobScheduler with System Monitors have evolved throughout the years. See the list of deprecated and active features:
FEATURE AVAILABILITY STARTING FROM RELEASE 1.8
JobScheduler provides the JobScheduler Monitoring Interface that can be used to integrate any system monitor. This interface replaces previous product specific solutions as e.g. for Nagios.
Deprecated Resources for Monitoring Interfaces
How To ... Articles
Frequently Asked Questions