Performance Templates define the specific instructions for performance data collection for devices and device components. Templates contain three types of sub objects: Data Sources, Thresholds and Graph Definitions. Data Sources specify exactly which data points to collect and what method to use to collect them. Thresholds define expected bounds for collected data and specify events to be created in Zenoss if the data does not match those bounds. Graph Definitions describe how to graph the collected data on the device or device components Performance or Status page.
The Templates page lists all the Templates available to a particular Device or Device Class. For Devices Classes you can get to this page via the Templates tab. For Devices you use the page menu->More->Templates menu item. The Templates page shows Performance Templates defined that that particular Device or Device Class and all those defined further up the Device Class hierarchy. If more than one Template of the same name is defined then only the one to which this Device or Device Class can bind is shown (the others have been overridden by that one.)
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