
30 vFoglight
Administration and Configuration Guide
About Models and Scope in vFoglight
A model is a principle for organizing monitoring data that vFoglight gathers from host
systems. vFoglight models have a tree-like structure that contains nodes. Each node in
the model can have properties, metrics, alarms and other nodes associated with it.
vFoglight adds these entities to the nodes in the data model as it collects them.
vFoglight can create different types of models. Collection models include raw data.
Virtual models are built on top of other models. There are two types of virtual models:
aggregate models, that do not require any additional configuration, and user models,
that require user-based configuration. Depending on your monitoring needs and the type
and range of vFoglight cartridges that you use for gathering data, your system includes
one or more collection models. An example of a collection model is the Host Model
illustrated above that collects information about host machines.
The following diagram illustrates a simplified version of the Host Model that vFoglight
builds in a typical business scenario.
Model MetricNode Property Alarm
Model A
Host A
CPU
ID Speed
Utilization
Alarm B
Alarm A
Memory
Total
Paging rate
Alarm C
Host B
CPU
ID Speed
Utilization
Alarm D
Alarm E
Memory
Total
Paging rate
Alarm F
Legend
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