Elasticsearch增加X-Pack插件后如何使用Java客户端访问

Elasticsearch没有安装X-Pack插件时创建TransportClient只需要依赖

  org.elasticsearch.client
  transport
  5.3.0

然后使用

Settings settings = Settings.builder()
        .put("cluster.name", "myClusterName").build();

TransportClient client = new PreBuiltTransportClient(settings)
        .addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("host1"), 9300))
        .addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("host2"), 9300));

// on shutdown
client.close();

就能连接上Elasticsearch了

但是在增加了X-Pack插件之后,由于Elasticsearch默认开启了xpack.security.enabled,如果还是使用原先的连接方式的话会抛权限异常,解决方式有两种

1.直接在elasticsearch.yml中增加配置

xpack.security.enabled=false

这样的话就还是可以使用原先的方式进行访问

2.使用x-pack-transport

  org.elasticsearch.client
  x-pack-transport
  5.3.0

注意这个依赖在maven中央仓库中找不到

需要在pom.xml中配置elastic的maven仓库

  elastic
  https://artifacts.elastic.co/maven
  
     true
  
  
     false
  

下载好依赖之后使用以下方式就能访问了

TransportClient client = new PreBuiltXPackTransportClient(Settings.builder()
        .put("cluster.name", "myClusterName")
        .put("xpack.security.user", "transport_client_user:changeme")
        ...
        .build())
    .addTransportAddress(new InetSocketTransportAddress("localhost", 9300))
    .addTransportAddress(new InetSocketTransportAddress("localhost", 9301));

 

转载于:https://my.oschina.net/u/2321575/blog/871705