.client.transport.NoNodeAvailableException: None of the configured nodes are availa 报错解决

问题描述：

springboot集成后。Java能正常连接es，但是在使用其方法操作数据的时候报下面的错误，报错信息如下：

 Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is NoNodeAvailableException[None of the configured nodes are available: [{#transport#-1}{7myh0ymRSYej03oKGhgkOA}{8.14.3.1}{8.14.3.1:9300}]]] with root cause
org.elasticsearch.client.transport.TransportClientNodesService.ensureNodesAreAvailable(TransportClientNodesService.java:349) ~[elasticsearch-6.4.2.jar:6.4.2]
 at org.elasticsearch.client.transport.TransportClientNodesService.execute(TransportClientNodesService.java:247) ~[elasticsearch-6.4.2.jar:6.4.2]
 at org.elasticsearch.client.transport.TransportProxyClient.execute(TransportProxyClient.java:60) ~[elasticsearch-6.4.2.jar:6.4.2]
 at org.elasticsearch.client.transport.TransportClient.doExecute(TransportClient.java:381) ~[elasticsearch-6.4.2.jar:6.4.2]
 at org.elasticsearch.client.support.AbstractClient.execute(AbstractClient.java:407) ~[elasticsearch-6.4.2.jar:6.4.2]
 at org.elasticsearch.client.support.AbstractClient.execute(AbstractClient.java:396) ~[elasticsearch-6.4.2.jar:6.4.2]
 at org.elasticsearch.action.ActionRequestBuilder.execute(ActionRequestBuilder.java:46) ~[elasticsearch-6.4.2.jar:6.4.2]
 at com.zb.utils.ElasticsearchUtil.searchListData(ElasticsearchUtil.java:326) ~[classes/:na]
 at com.zb.controller.EsController.queryMatchData(EsController.java:167) ~[classes/:na]
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_261]
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_261]
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_261]
 at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_261]
 at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:215) ~[spring-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
 at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:142) ~[spring-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
 at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102) ~[spring-webmvc-5.1.2.RELEASE.jar:5.1.2.RELEASE]
 at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895) ~[spring-webmvc-5.1.2.RELEASE.jar:5.1.2.RELEASE]
 at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:800) ~[spring-webmvc-5.1.2.RELEASE.jar:5.1.2.RELEASE]
 at 

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原因分析以及解决方案：

报这个错的意思是 找不到es节点。
也就是说你的 network.host：服务器IP地址 配置可能不正确。

也有可能是 cluster.name 节点配置我不正确，

下面为Java连接es的代码。其中这几项配置不要弄错。

Settings settings = Settings.settingsBuilder().put("cluster.name"," my-application").put("client.transport.sniff", true).build();
            client = TransportClient.builder().settings(settings).build().addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName(ipAddress1), iPort1));

cluster.name 节点要和es配置文件 yml中的保持一致。ip和端口也要正确。

如果上述配置修改后还是不行，请查看Java pom文件里的es依赖版本是否与自己安装的es版本一致，如果不一致，很可能导致节点找不到的问题。

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