各環境で接続するelascticsearchを指定する

config/environments/development.rb

@@ -43,4 +43,6 @@
   # Use an evented file watcher to asynchronously detect changes in source code,
   # routes, locales, etc. This feature depends on the listen gem.
   # config.file_watcher = ActiveSupport::EventedFileUpdateChecker
+
+  config.elasticsearch_host = ENV['ELASTICSEARCH_URL'] || 'http://127.0.0.1:9200'
 end

config/environments/production.rb

@@ -67,4 +67,6 @@
     authentication:        'plain',
     enable_starttls_auto:  true
   }
+
+  config.elasticsearch_host = ENV['ELASTICSEARCH_URL'] || 'http://127.0.0.1:9200'
 end

config/environments/test.rb

@@ -41,4 +41,6 @@
 
   # Raises error for missing translations
   # config.action_view.raise_on_missing_translations = true
+
+  config.elasticsearch_host = ENV['ELASTICSEARCH_URL'] || 'http://127.0.0.1:9250'
 end

config/initializers/elasticsearch.rb

@@ -0,0 +1,2 @@
+Elasticsearch::Model.client =
+  Elasticsearch::Client.new(host: Rails.application.config.elasticsearch_host)

spec/rails_helper.rb

@@ -68,6 +68,4 @@
   config.after(:suite) do
     Elasticsearch::Extensions::Test::Cluster.stop
   end
-      end
-    end
 end