1.Configure sample ambari alert using Ambari UI. . 2.Login to ambari webui using [admin/admin] . 3.Click on "Alerts" . . 4.Click "Action"-> "Manage Notification" . 5.Add sample alert for service . 6. In above example you can use Gmail username and password to test connection. . 7. After adding sample alert close the screen. . 8.From the ambari ui now stop one of the zookeeper service . . 9.You should be able to see alert indication in ambari ui for the zookeeper service stopped . . 10. Same time if you tail for ambari-alerts.log you will be able to see "Connection Failed" log messages for zookeeper service. . 2016-05-27 14:57:31,541 [CRITICAL] [ZOOKEEPER] [zookeeper_server_process] (ZooKeeper Server Process) Connection failed: [Errno 111] Connection refused to node1.example.com:2181 . 11. Check your email and make sure you receive the alert. . 12. If you don’t see alerts the enable debugging for Alerts in ambari log4j.properties as shown below. . 13. Login to ambari server cli using superuser credentials [eg. root] . vi /etc/ambari-server/conf/log4j.properties Modify - log4j.logger.alerts=INFO,alerts to log4j.logger.alerts=DEBUG,alerts Add below line to Alerts section - log4j.logger.org.apache.ambari.server.notifications.dispatchers=DEBUG,alerts . 14. Save the file and restart ambari server service. . 15. Try to stop zookeeper on any one of the node and check for the ambari-server.log and amabri-alerts.log. . 16. You should be able to see the alert logs sent on email via smtp settings you did. . 17. If there are any smtp errors you will see those in "/var/log/ambari-server/ambari-server.log" ... View more