Index settings are more important because they allow us to control several important ElasticSearch functionalities such as sharding/replica, caching, term management, routing, and analysis.
You will need a working ElasticSearch cluster and the index created in the Creating an index recipe in this chapter.
To manage the index settings, we will perform the steps given as follows:
To retrieve the settings of your current Index, the URL format is the following:
http://<server>/<index_name>/_settings
We are reading information via REST API, so the method will be GET, and an example of a call using the index created in the Creating an index recipe, is:
curl -XGET 'http://localhost:9200/myindex/_settings'The response will be something similar to:
{ "myindex" : { "settings" : { "index" : { "uuid" : "pT65_cn_RHKmg1wPX7BGjw", "number_of_replicas" : "1", "number_of_shards" : "2", "version" : { ...