Icinga Version: v2.2.0-511-g23005e1
Backport?: Not yet backported
Include in Changelog: 1

critical/config: Error: Notification object refers to a host/service which doesn't exist.
Location:
/etc/icinga2/lconf/hosts/host1.conf(35): }
/etc/icinga2/lconf/hosts/host1.conf(36): 
/etc/icinga2/lconf/hosts/host1.conf(37): object Notification "host-host1-service-service-event-mail-service-notification-0-1" {
                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
/etc/icinga2/lconf/hosts/host1.conf(38):  import "mail-service-notification"
/etc/icinga2/lconf/hosts/host1.conf(39):  host_name = "host1"

critical/config: 1 error

object Host "host1" {
        import "generic-host"
        address = "127.0.0.1"
        display_name = "aliasname"
        max_check_attempts = 6543
        event_command = "host-host1-eventhandler-args",
        groups = [ "hg1" ]
        enable_notifications = 1
        vars.EVENTARG1 = "bla"
        vars.EVENTARG2 = "foo"
        vars.EVENTARG3 = "bumsti"
}

object Service "service-event" {
        import "generic-service"
        host_name = "host1"
        check_command = "eventhandler-args"
        check_interval = 120m
        retry_interval = 45m
        display_name = "test"
        event_command = "host-host1-service-service-event-eventhandler-args"
        enable_flapping = 0
        enable_notifications = 0
        vars.EVENTARG1 = "eins"
        vars.EVENTARG2 = "zwei"
        vars.EVENTARG3 = "polizei"
}


object Notification "host-host1-service-service-event-mail-service-notification-0-1" {
        import "mail-service-notification"
        host_name = "host1"
        service_name = "service-event"
        command = "mail-service-notification"
        interval = 60m
        users = [ "c2" ]
}

Make sure that Notification objects are activated after Host/Service objects

fixes #8517