ElasticSearch Java API连接报错NoNodeAvailableException解决方案

 

如下代码:


public static void creatIndex(){
    // 1、获取客户端对象,设置连接的集群名称
   Settings settings= Settings.builder().put("cluster.name","elasticsearch").build();
    client=new PreBuiltTransportClient(settings);
    // 2、连接集群
    try {
        client.addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("hadoop-001"), 9300));
        System.out.println(client.toString());
    } catch (UnknownHostException e) {
        e.printStackTrace();
    }

    //1.创建索引(indices指数)
    client.admin().indices().prepareCreate("blog").get();
    //2.关闭连接
    client.close();
}


运行报错:


NoNodeAvailableException


 

 

查看日志如下:

java.lang.IllegalStateException: Received message from unsupported version: [5.2.2] minimal compatible version is: [5.6.0]

ElasticSearch  Java API连接报错NoNodeAvailableException解决方案

 

可知是版本太低,至少要5.6.0以上版本才行

 

修改后的pom.xml文件如下:



 
 
 



 
 
 



 
 
 


再次运行,成功!!!!!!

 

 

 

其他原因:

1.查看

cluster.name,是否是你服务器上在elasticsearch.yml上配置的

     2.查看
port:9300
val client = TransportClient.builder().settings(settings).build()
 .addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("******"), 9300))
      3.查看
      服务器的防火墙,是否关了。

     4.查看
        如果设置client.transport.sniff为true,则表示客户端去嗅探整个cluster的状态,把集群中其它机器的ip地址加到客户端中

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