OneSight Administrator Guide

Configuring OneSight Compound Metric Monitors
Configuring OneSight Compound Metric
Monitors
The OneSight Compound Metric monitor lets you put together data
from more than one monitor. For example, you can trigger an action
plan based on the alert state of two metrics or you could calculate
disk usage across all disks.
The OneSight Compound Metric monitor has two main
components:
References – references are the values used to create expressions.
There are four types of references: monitor group state, monitor
state, metric value, and alert state. Monitor group and monitor
state let you use the color of the status gumball in the expression.
Metric value lets you use the value of the metric in the
expression. Alert state lets you use the state of the alert in the
expression. For example, you could create a reference to the
retrieval time of a URL, or to the state of a particular monitor.
Expression – the formula used to calculate the value of the
OneSight Compound Metric monitor. The result of the formula
must be numeric. For example, you could create an expression
that returns 1 if all monitors are in a good state (green) and 0 if at
least one monitor is in a critical state (red).
The first thing you do when configuring a OneSight Compound
Metric monitor is to configure references. Once you configure the
references, you can create the expression for the Compound
Monitor.
In the Add Monitor dialog box, when you click OneSight
Compound Metric in the Monitor Types box, settings to configure a
OneSight Compound Metric monitor appear on these dialog box
tabs:
Chapter 5: Configuring Monitors 153