We looked at the basic and default notification configuration provided by Icinga. There are a number of customizations possible on top of it, some of which are covered in this section.
Service objects offer some directives to control or specify whether, which, and how the notifications should be sent out.
notifications_enabled directive is used to enable/disable (0/1) notifications for a service check. This is useful to perform extremely noncritical checks, for which we don't need notifications. The default value is 1, and should only be set to 0 to disable notifications.notification_options directive determines what kind of notifications should be sent for the service check. The notification ...No credit card required