question Re: Ambari Alerts - Namenode heap source code in Archives of Support Questions (Read Only)

Ambari Alerts - Namenode heap source code

mdh_raghavendra — Tue, 12 Sep 2017 00:56:35 GMT

Hi,

Can any help me on finding source code of Namenode/Resourcemanager/datanode heap in Ambari alerts

Re: Ambari Alerts - Namenode heap source code

jsensharma — Sun, 18 Aug 2019 08:56:54 GMT

@rmr1989

Heap Alerts are Available for NameNode & DataNodes by default (not for Resourcemanager).

You can find it in the following locations:

NameNode: (they are of "type": "SCRIPT" alert, and the following scripts are used)

https://github.com/apache/ambari/blob/trunk/ambari-server/src/main/resources/common-services/HDFS/2.1.0.2.0/package/alerts/alert_metrics_deviation.py

https://github.com/apache/ambari/blob/trunk/ambari-server/src/main/resources/common-services/HDFS/3.0.0.3.0/package/alerts/alert_metrics_deviation.py

DataNode: (It's a "type": "METRIC" kind of alert) Which uses the JMX. It checks the DataNode JMXServlet for the MemHeapUsedM and MemHeapMaxM properties.

https://github.com/apache/ambari/blob/trunk/ambari-server/src/main/resources/common-services/HDFS/2.1.0.2.0/alerts.json#L1715-L1756

To know more about SCRIPT or METRIC type alerts please refer to https://docs.hortonworks.com/HDPDocuments/Ambari-2.5.1.0/bk_ambari-operations/content/alert_types.html

Re: Ambari Alerts - Namenode heap source code

jonathanhurley — Tue, 12 Sep 2017 01:12:41 GMT

There are several alerts which cover heap. For example, if you wanted to see the raw DataNode heap value, then you'd check the metric alert definition for it:

https://github.com/apache/ambari/blob/trunk/ambari-server/src/main/resources/common-services/HDFS/2.1.0.2.0/alerts.json#L1714-L1755

For NameNode, we don't alert on heap directly but we measure average heap deviation values:

https://github.com/apache/ambari/blob/trunk/ambari-server/src/main/resources/common-services/HDFS/2.1.0.2.0/alerts.json#L868-L947

https://github.com/apache/ambari/blob/trunk/ambari-server/src/main/resources/common-services/HDFS/2.1.0.2.0/package/alerts/alert_metrics_deviation.py

Re: Ambari Alerts - Namenode heap source code

mdh_raghavendra — Tue, 12 Sep 2017 01:35:40 GMT

Thank you...

Re: Ambari Alerts - Namenode heap source code

mdh_raghavendra — Tue, 12 Sep 2017 01:35:57 GMT

Thank you..