elasticsearch.js客户端连接被拒绝:Access-Control-Allow-Origin无法识别？

Question

我一直在尝试使用elasticsearch.jquery.min.js ping本地运行的elasticsearch,每次都会出现"无生命连接"错误.

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ETA:在Chrome中我看到的是一个非常低级别的"拒绝连接".我正在开发MacOS X,我的浏览器指向页面http://localhost/~myuserid/SiteName/.因为我访问localhost:9200它显然属于跨域CORS要求.

我在Chrome控制台中看到以下错误:

XMLHttpRequest cannot load http://localhost:9200/?hello=elasticsearch!.
No 'Access-Control-Allow-Origin' header is present on the requested resource.
Origin 'http://localhost' is therefore not allowed access.

根据http://enable-cors.org/server_apache.html我已将以下内容添加到/etc/apache2/httpd.conf中:

<Directory />
    Header set Access-Control-Allow-Origin "localhost:9200"
    AllowOverride none
    Require all denied
</Directory>

并运行

$ sudo apachectl -t
$ sudo apachectl -k graceful

但错误仍然存​​在.我还有另一种设置吗？

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我是elasticsearch.js的菜鸟.我是否需要在弹性搜索方面做任何事情以允许来自浏览器的客户端连接,或者什么？

我正在读这本书尝试ping:

var client = new $.es.Client({
  hosts: 'localhost:9200'
  });

client.ping(
  {
    requestTimeout: Infinity,
    // undocumented params are appended to the query string
    hello: "elasticsearch!"
    },
  function (error) {
    if (error) {
      console.error('elasticsearch cluster is down!');
      console.error(error);
    } else {
      console.log('All is well');
      }
    }
  );

但是我收到以下错误:

"WARNING: 2015-10-10T07:00:16Z"        elasticsearch.jquery.min.js:14:10575
  Unable to revive connection: http://localhost:9200/

"WARNING: 2015-10-10T07:00:16Z"        elasticsearch.jquery.min.js:14:10575
  No living connections

我可以在命令行上使用curl连接就好了,拉动和插入数据等:

$ curl "localhost:9200/_cat/indices?v"
health status index             pri rep docs.count docs.deleted store.size pri.store.size 

green  open   fuddle              1   0          3            0     12.9kb         12.9kb                                                
green  open   faddle              1   0          0            0       144b           144b 

---

ETA附加诊断.Google Chrome会显示失败尝试的以下网络跟踪.在HTTP层,响应看起来正在发生.

General
  Remote Address:[::1]:9200
  Request URL:http://localhost:9200/?hello=elasticsearch!
  Request Method:HEAD
  Status Code:200 OK
Response Headers
  Content-Length:0
  Content-Type:text/plain; charset=UTF-8
Request Headers
  Accept:text/plain, */*; q=0.01
  Accept-Encoding:gzip, deflate, sdch
  Accept-Language:en-US,en;q=0.8
  Connection:keep-alive
  Content-Length:0
  Host:localhost:9200
  Origin:http://localhost
  Referer:http://localhost/~browsc3/Opticon/
  User-Agent:Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/45.0.2454.101 Safari/537.36
Query String Parameters
  view URL encoded
  hello:elasticsearch!

wget中的相同请求:

wget http://localhost:9200/?hello=elasticsearch!
--2015-10-10 09:47:13--  http://localhost:9200/?hello=elasticsearch!
Resolving localhost... ::1, 127.0.0.1
Connecting to localhost|::1|:9200... connected.
HTTP request sent, awaiting response... 200 OK
Length: 342 [application/json]
Saving to: 'index.html?hello=elasticsearch!'

index.html?hello=elastics 100%[=====================================>]     342  --.-KB/s   in 0s     

2015-10-10 09:47:13 (65.2 MB/s) - 'index.html?hello=elasticsearch!' saved [342/342]

我真的不知道从哪里开始.我在googlz上看到了很多关于错误的引用,但没有一种情况看起来很相似.感觉就像我只是遇到了一些错误的配置,但我找不到任何可以表明它是什么的东西.

Answer 1

嗯,这是一个艰难的.

这是修复它的原因:

根据http://enable-cors.org/server_apache.html,在/etc/apache2/httpd.conf,配置Access-Control-Allow-Origin:

<Directory />
    # Add the following line to enable CORS to connect to local elasticsearch.
    Header set Access-Control-Allow-Origin "localhost:9200"
    AllowOverride none
    Require all denied
</Directory>

根据https://jsbroadcast.com/elastic-search-cors/,elasticsearch-1.7.0/config/elasticsearch.yml添加:

http.cors.enabled : true // 
http.cors.allow-origin: "/.*/"
http.cors.allow-methods : OPTIONS, HEAD, GET, POST, PUT, DELETE
http.cors.allow-headers : "X-Requested-With,X-Auth-Token,Content-Type, Content-Length, Authorization"

我现在可以毫无错误地运行client.ping呼叫.