Skip to content

How to add an anomaly trigger

Use this procedure to create a new anomaly trigger. You must have the Manager role to create a trigger.

  1. Open the ADMIN > Actions page, and then click the TRIGGERS tab.

  2. In the upper-right corner, click ADD TRIGGER.

  3. In the Trigger details area of the ADD TRIGGER dialog, enter a name and optionally, a description.

    Note that trigger names cannot be changed after the ADD TRIGGER dialog is saved.

  4. In the Type field, select Anomalies.

    The ADD TRIGGER dialog expands to include new areas.

  5. In the Trigger criteria area, create a query to specify a key metric and, optionally, to identify one or more entities in your environment.

    1. In the first comparison, select the Metric name field for the left side, the equal to operator, and the name of a key metric that is being modeled for the right side.

      The anomaly detection service only trains models of a key metric when it finds enough historical data for the metric. To determine whether a metric is being modeled, open the Smart View page of an entity for which the metric is collected and look for confidence bands in graphs of the metric.

    2. (Optional) Add comparisons to identify entities in your environment.

    For more information, see Trigger queries and Anomaly trigger fields.

  6. In the Minimum score area, enter a threshold value for anomaly scores. When an anomaly score exceeds this value, the trigger matches.

    Typically, values lower than 0.99 yield irrelevant matches, so Zenoss recommends starting with 0.99. Then, raise the value to (for example) 0.995 to improve matches, if necessary.

  7. (Optional) In the Tags field, add one or more terms to associate with the trigger.

  8. Click SAVE.