Elasticsearch::Transport::Transport::Errors::BadRequest [400] 创建索引时

Question

在我安装了“elasticsearch-model”和“elasticsearch-rails”gems 的 rails 应用程序中，并在默认端口上运行 elasticsearch (v5.1.1) 和一个看起来像这样的模型

class Article
  include Mongoid::Document
  include Elasticsearch::Model
  include Elasticsearch::Model::Callbacks

  field :title, type: String
  field :author, type: String

  index_name "articles-#{Rails.env}"
end

初始化程序是这样的

Elasticsearch::Model.client = Elasticsearch::Client.new host: ENV['ELASTICSEARCH_URL'] || "http://localhost:9200/"

当我尝试导入或创建索引时

Article.import force:true
Article.__elasticsearch__.create_index! force: true 

我收到以下错误

 Elasticsearch::Transport::Transport::Errors::BadRequest: [400] No handler found for uri [//articles-development] and method [DELETE]
  from /Users/bgr/.rvm/gems/ruby-2.3.0/gems/elasticsearch-transport-1.0.17/lib/elasticsearch/transport/transport/base.rb:201:in `__raise_transport_error'
  from /Users/bgr/.rvm/gems/ruby-2.3.0/gems/elasticsearch-transport-1.0.17/lib/elasticsearch/transport/transport/base.rb:312:in `perform_request'
  from /Users/bgr/.rvm/gems/ruby-2.3.0/gems/elasticsearch-transport-1.0.17/lib/elasticsearch/transport/transport/http/faraday.rb:20:in `perform_request'
  from /Users/bgr/.rvm/gems/ruby-2.3.0/gems/elasticsearch-transport-1.0.17/lib/elasticsearch/transport/client.rb:128:in `perform_request'

Answer 1

经过一番调查，问题出在我的初始化程序上。更换主机后就可以使用了。

Elasticsearch::Model.client = Elasticsearch::Client.new host: ENV['ELASTICSEARCH_URL'] || "localhost:9200"

更新 显然该配置适用于 Elasticsearch 2.4.x。