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Ambari Metrics API

The REST API for Ambari supports metric queries at CLUSTER, HOST, COMPONENT and HOST COMPONENT levels.

Following is an illustration of an API call that fetches metrics from the Metrics backend service using Ambari API at the aforementioned levels.

CLUSTER

(E.g.: Dashboard metrics : Fetch load average across all nodes of a cluster)

 

 

HOST

(E.g.: Host metrics: Get the cpu usage on a particular host in the cluster)

 

 

COMPONENT

(E.g.: Service metrics: Get the IO utilization across all datanodes)

 

HOST COMPONENT

(E.g.: Daemon metrics: Get the heap memory usage for a datanode)

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