Introduction

ElasticSearch has a well-documented JSON API, but you’ll probably want to use some libraries that handle that for you:

• Elasticsearch - the official low level wrapper for the HTTP API
• Elasticsearch-rails - the official high level Rails integration that helps you to connect your Rails models with ElasticSearch using either ActiveRecord or Repository pattern
• Chewy - An alternative, non-official high level Rails integration that is very popular and arguably has better documentation

Let’s use the first option for testing the connection:

gem install elasticsearch

Then fire up the ruby terminal and try it out:

require 'elasticsearch'

client = Elasticsearch::Client.new log: true
# by default it connects to http://localhost:9200

client.transport.reload_connections!
client.cluster.health

client.search q: 'test'