The last graphical element that will be discussed in this chapter is a high-level view of our monitored infrastructure. In a business-level view, there is no provision for low-level details, such as CPU usage, memory consumption, and free space. What the business would like to see is the availability of your services provided and the service-level agreements of your IT services.

Zabbix covers this point with IT services. A service is a hierarchical view of your service. Now imagine that you need to monitor your website (we discussed SLAs in Chapter 1, Deploying Zabbix). You need to identify your service components, for example, web server, application server, and DB server. For each one of them, you need to identify triggers that tell you whether the service is available or not. The hierarchical view is the one represented in the following screenshot:

In this hierarchy, each node has a status; this status is calculated on the basis of triggers and propagated to the higher level...