Is it possible to configure Ambari alert for under replicated blocks?

[#1]

In Ambari HDFS page, we can see the "Under Replicated Blocks" widget under metrics. Is there a corresponding Alert that can be configured to send email alerts? I am using Ambari 2.5.1.

I understand we could probably set up a custom metric to capture this info. But was hoping to see whether its already built in. Did some search with key works "under", "rep" etc. But no luck.

Thanks

[#2]

@Binu Varghese

Unfortunately, but not built-in. Just to get you started, here are a few good reference that could help you to build one:

https://community.hortonworks.com/articles/38149/how-to-create-and-register-custom-ambari-alerts.htm...

https://community.hortonworks.com/articles/138117/how-to-setup-a-custom-ambari-metrics-alert.html

https://cwiki.apache.org/confluence/display/AMBARI/3.+Monitoring+Scenarios#id-3.MonitoringScenarios-...

Anyhow, WebHDFS is the REST API you need to use:

http://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/WebHDFS.html

https://dzone.com/articles/hadoop-rest-api-webhdfs

[#3]

Thank you. A lot of good information. Will go thru these and see how we can accomplish this.