<p><strong>Host - notification options<br></strong></p>
<p>This directive is used to determine when notifications for the host should be sent out. Valid options are a combination of one or more of the following: <br><strong>d</strong> = send notifications on a DOWN state, <br><strong>u</strong> = send notifications on an UNREACHABLE state, <strong><br>r</strong> = send notifications on recoveries (OK state), <br><strong>f</strong> = send notifications when the host starts and stops flapping, and <br><strong>s</strong> = send notifications when scheduled downtime starts and ends.  <br>If you do not specify any notification options, Nagios will assume that you want notifications to be sent out for all possible states.</p>
<p>Example: If you specify <strong>d,r</strong> in this field, notifications will only be sent out when the host goes DOWN and when it recovers from a DOWN state.</p>
<p><em>Parameter name:</em> notification_options<br><em>Required:</em> yes</p>