Create an alert notification

Use Alerts > Actions > Manage Notifications to create or edit alert notifications.

1. In Ambari Web, browse to browse to Alerts > Actions > Manage Notifications.
2. In Manage Alert Notifications, click +.
3. In Create Alert Notification, complete the fields.
   1. In Name, enter a name for the notification.
   2. In Groups, click All or Custom to assign the notification to every or set of groups that you specify.
   3. In Description, type a phrase that describes the notification.
   4. In Method, click EMAIL, SNMP (for MIB-based) or Custom SNMP as the method by which Ambari server handles delivery of this notification.
4. Complete the fields for the notification method you selected.
   For email notification - provide information about your SMTP infrastructure, such as SMTP server, port, to and from addresses, and whether authentication is required to relay messages through the server. You can add custom properties to the SMTP configuration based on Javamail SMTP options.

   Email To

   A comma-separated list of one or more email addresses to which to send the alert email

   SMTP Server

   The FQDN or IP address of the SMTP server to use to relay the alert email

   SMTP Port

   The SMTP port on the SMTP server

   Email From

   A single email address to be the originator of the alert email

   Use Authentication

   Determine whether your SMTP server requires authentication before it can relay messages. Be sure to also provide the username and password credentials

   For MIB-based SNMP notification - provide the version, community, host, and port to which the SNMP trap should be sent.

   Version

   SNMPv1 or SNMPv2c, depending on the network environment

   Hosts

   A comma-separated list of one or more host FQDNs to which to send the trap

   Port

   The port on which a process is listening for SNMP traps

   For SNMP notifications - Ambari uses a MIB, a text file manifest of alert definitions, to transfer alert information from cluster operations to the alerting infrastructure. A MIB summarizes how object IDs map to objects or attributes. For example, MIB file content looks like this:
   
   You can find the MIB file for your cluster on the Ambari Server host, at /var/lib/ambari-server/resources/APACHE-AMBARI-MIB.txt.
   For Custom SNMP notification - provide the version, community, host, and port to which the SNMP trap should be sent. Also, the OID parameter must be configured properly for SNMP trap context. If no custom, enterprise-specific OID is used, you should use the following:

   Version

   SNMPv1 or SNMPv2c, depending on the network environment

   OID

   1.3.6.1.4.1.18060.16.1.1

   Hosts

   A comma-separated list of one or more host FQDNs to which to send the trap

   Port

   The port on which a process is listening for SNMP traps

5. In Create Alert Notification, click Save.