NoNodeAvailableException[None of the configured nodes are available: [{#transport#-1}{UGO7NEouTbaQcE

 今天在使用java客户端连接elasticsearch时出现NoNodeAvailableException[None of the configured nodes are available

2019-07-09 19:59:02,109 ERROR [com.alibaba.dubbo.rpc.filter.ExceptionFilter] - [ [DUBBO] Got unchecked and undeclared exception which called by 192.168.1.77. service: com.dotoyo.ims.service.diary.IDiaryAssemblyESService, method: maintainingDiaryToEs, exception: org.elasticsearch.client.transport.NoNodeAvailableException: None of the configured nodes are available: [{#transport#-1}{UGO7NEouTbaQcEzJNqQcgw}{192.168.1.38}{192.168.1.38:9300}], dubbo version: 2.6.2, current host: 192.168.1.77]
NoNodeAvailableException[None of the configured nodes are available: [{#transport#-1}{UGO7NEouTbaQcEzJNqQcgw}{192.168.1.38}{192.168.1.38:9300}]]
	at org.elasticsearch.client.transport.TransportClientNodesService.ensureNodesAreAvailable(TransportClientNodesService.java:344)
	at org.elasticsearch.client.transport.TransportClientNodesService.execute(TransportClientNodesService.java:242)
	at org.elasticsearch.client.transport.TransportProxyClient.execute(TransportProxyClient.java:59)
	at org.elasticsearch.client.transport.TransportClient.doExecute(TransportClient.java:366)
	at org.elasticsearch.client.support.AbstractClient.execute(AbstractClient.java:404)
	at org.elasticsearch.action.ActionRequestBuilder.execute(ActionRequestBuilder.java:80)
	at org.elasticsearch.action.ActionRequestBuilder.execute(ActionRequestBuilder.java:54)
	at com.dotoyo.ims.service.diary.DiaryAssemblyESServiceImpl.save(DiaryAssemblyESServiceImpl.java:323)
	at com.dotoyo.ims.service.diary.DiaryAssemblyESServiceImpl.maintainingDiaryToEs(DiaryAssemblyESServiceImpl.java:281)
	at com.alibaba.dubbo.common.bytecode.Wrapper224.invokeMethod(Wrapper224.java)
	at com.alibaba.dubbo.rpc.proxy.javassist.JavassistProxyFactory$1.doInvoke(JavassistProxyFactory.java:47)
	at com.alibaba.dubbo.rpc.proxy.AbstractProxyInvoker.invoke(AbstractProxyInvoker.java:76)
	at com.alibaba.dubbo.config.invoker.DelegateProviderMetaDataInvoker.invoke(DelegateProviderMetaDataInvoker.java:52)
	at com.alibaba.dubbo.rpc.protocol.InvokerWrapper.invoke(InvokerWrapper.java:56)
	at com.alibaba.dubbo.rpc.filter.ExceptionFilter.invoke(ExceptionFilter.java:62)
	at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:72)
	at com.alibaba.csp.sentinel.adapter.dubbo.SentinelDubboProviderFilter.invoke(SentinelDubboProviderFilter.java:66)
	at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:72)
	at com.alibaba.dubbo.monitor.support.MonitorFilter.invoke(MonitorFilter.java:75)
	at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:72)
	at com.alibaba.dubbo.rpc.filter.TimeoutFilter.invoke(TimeoutFilter.java:42)
	at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:72)
	at com.alibaba.dubbo.rpc.protocol.dubbo.filter.TraceFilter.invoke(TraceFilter.java:78)
	at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:72)
	at com.alibaba.dubbo.rpc.filter.ContextFilter.invoke(ContextFilter.java:72)
	at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:72)
	at com.alibaba.dubbo.rpc.filter.GenericFilter.invoke(GenericFilter.java:131)
	at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:72)
	at com.alibaba.dubbo.rpc.filter.ClassLoaderFilter.invoke(ClassLoaderFilter.java:38)
	at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:72)
	at com.alibaba.dubbo.rpc.filter.EchoFilter.invoke(EchoFilter.java:38)
	at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:72)
	at com.alibaba.dubbo.rpc.protocol.dubbo.DubboProtocol$1.reply(DubboProtocol.java:103)
	at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.handleRequest(HeaderExchangeHandler.java:96)
	at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.received(HeaderExchangeHandler.java:172)
	at com.alibaba.dubbo.remoting.transport.DecodeHandler.received(DecodeHandler.java:51)
	at com.alibaba.dubbo.remoting.transport.dispatcher.ChannelEventRunnable.run(ChannelEventRunnable.java:80)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)

 解决方法：

1. ip地址不对

2. port不对，端口号要用transport.tcp.port

3. 集群节点不对 （cluster.name） 《elasticsearch.yml配置文件的cluster.name》

4. 如果es安装在阿里云，那么需要设置安全组。

5. 如果上面都还不行，那么建议检查下elasticsearch版本的兼容性问题。