ElasticSearch Cookbook - Second Edition

Getting cluster node information via the API

The earlier recipes allow us to return information to a cluster level; ElasticSearch provides calls to gather information at a node level.

Getting ready

You need a working ElasticSearch cluster.

How to do it...

To get information on nodes, we will perform the following steps:

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

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

2. The result will be as follows:

   { "cluster_name" : "es-cookbook", "nodes" : { "R3Gwu0a6Q9GTHPQ6cg95ZA" : { "name" : "Man-Ape", "transport_address" : "inet[/192.168.1.13:9300]", "host" : "Albertos-MacBook-Pro-2.local", "ip" : "192.168.1.13", ...