Chapter 6. Detecting Problems with Triggers

We have gained quite comprehensive knowledge of what kind of information we can gather using items. However, so far, we only have a single thing we are actively monitoring—we only have a single trigger created (we did that in Chapter 2, Getting Your First Notification). Triggers can do way more. Let's recap what a trigger is.

A trigger defines when a condition is considered worthy of attention. It "fires" (that is, becomes active), when item data or lack of it matches a particular condition, such as too high system load or too low free disk space.

Let's explore both of these concepts in more detail now. In this chapter, we will:

  • Get to know more about the trigger-and-item relationship
  • Discover trigger dependencies ...

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