ElasticSearch Cookbook - Second Edition

Getting node statistics via the API

The node statistics call API is used to collect real-time data of your node, such as memory usage, threads usage, the number of indexes, and searches.

Getting ready

You need a working ElasticSearch cluster.

How to do it...

To get nodes statistics, we will perform the following steps:

1. To retrieve the node statistics, the HTTP method is GET and the curl command is:

   curl -XGET 'http://localhost:9200/_nodes/stats?all=true'
   curl -XGET 'http://localhost:9200/_nodes/<nodeId1>,<nodeId2>/stats?all=true'
   

2. The result will be a long list of all the node statistics. The result is composed of the following:
   • A header describing the cluster name and the nodes section:

     { "cluster_name" : "es-cookbook", "nodes" : { "R3Gwu0a6Q9GTHPQ6cg95ZA" ...