# ES 5.5.1 exception caught on transport layer:closing connection,java.io.IOException: Operation timed out **URL:** \ **Category:** Elasticsearch\ **Created:** [July 13, 2020, 7:08am UTC](https://discuss.elastic.co/t/es-5-5-1-exception-caught-on-transport-layer-closing-connection-java-io-ioexception-operation-timed-out/240905 "2020-07-13T07:08:46Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![wtfDragon1](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/wtfdragon1/32/41348_2.png) [@wtfDragon1](https://discuss.elastic.co/u/wtfDragon1)\ **Post date:** [July 13, 2020, 7:08am UTC](https://discuss.elastic.co/t/es-5-5-1-exception-caught-on-transport-layer-closing-connection-java-io-ioexception-operation-timed-out/240905/1 "2020-07-13T07:08:46Z")
I have a very urgent question，ask for help this is my config file: master: network.host: 0.0.0.0 discovery.zen.minimum\_master\_nodes: 1 node.master: true bootstrap.memory\_lock: false node.data: false node.ingest: false discovery.zen.ping.unicast.hosts: ["192.168.8.3:31300"] node.name: "master01" cluster.name: "esgroup" http.cors.enabled: true http.cors.allow-origin: "\*" network.publish\_host: "192.168.8.3" transport.tcp.port: 31300 transport.publish\_port: 31300 data: network.host: 0.0.0.0 discovery.zen.minimum\_master\_nodes: 1 node.master: false bootstrap.memory\_lock: false node.data: true node.ingest: false discovery.zen.ping.unicast.hosts: ["192.168.8.3:31300"] node.name: "data01" cluster.name: "esgroup" http.cors.enabled: true http.cors.allow-origin: "\*" network.publish\_host: "192.168.8.4" transport.tcp.port: 9300 transport.publish\_port: 9300 I use docker to deploy master and node nodes on two machines, the command is as follows： master: docker run -d --name elasticsearch -p 9200:9200 -p 31300:31300 -v /root/elasticsearch.yaml:/usr/share/elasticsearch/config/elasticsearch.yml elasticsearch:5.5.1-apline data: docker run -d --name elasticsearch -p 9200:9200 -p 9300:9300-v /root/elasticsearch.yaml:/usr/share/elasticsearch/config/elasticsearch.yml elasticsearch:5.5.1-apline It was successful at the beginning, but it will crash after the interruption, and then restart and then resume, and then crash again, so repeat error: ```auto [2020-07-13T01:32:36,313][INFO][o.e.n.Node] [master-1] started [2020-07-13T01:32:48,541][INFO][o.e.c.s.ClusterService] [master-1] added {{data01}{DiVv7eMrRzareg01SvPMQA}{tn8WkquNRzOuffQFJuc_lg}{192.168.8.4}{192.168.8.4:9300},}, reason: zen-disco-node-join[{data01}{DiVv7eMrRzareg01SvPMQA}{tn8WkquNRzOuffQFJuc_lg}{10.75.2.65}{10.75.2.65:9300}] [2020-07-13T03:44:06,098][WARN][o.e.t.n.Netty4Transport] [master-1] exception caught on transport layer [[id: 0xe64c0909, L:/172.17.0.3:31300 - R:/192.168.8.4:33810]], closing connection java.io.IOException: Operation timed out at sun.nio.ch.FileDispatcherImpl.read0(Native Method) ~[?:?] at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39) ~[?:?] at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223) ~[?:?] at sun.nio.ch.IOUtil.read(IOUtil.java:197) ~[?:?] at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:380) ~[?:?] at io.netty.buffer.PooledHeapByteBuf.setBytes(PooledHeapByteBuf.java:261) ~[netty-buffer-4.1.11.Final.jar:4.1.11.Final] at io.netty.buffer.AbstractByteBuf.writeBytes(AbstractByteBuf.java:1100) ~[netty-buffer-4.1.11.Final.jar:4.1.11.Final] at io.netty.channel.socket.nio.NioSocketChannel.doReadBytes(NioSocketChannel.java:372) ~[netty-transport-4.1.11.Final.jar:4.1.11.Final] at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:123) [netty-transport-4.1.11.Final.jar:4.1.11.Final] at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:644) [netty-transport-4.1.11.Final.jar:4.1.11.Final] at io.netty.channel.nio.NioEventLoop.processSelectedKeysPlain(NioEventLoop.java:544) [netty-transport-4.1.11.Final.jar:4.1.11.Final] at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:498) [netty-transport-4.1.11.Final.jar:4.1.11.Final] at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:458) [netty-transport-4.1.11.Final.jar:4.1.11.Final] at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858) [netty-common-4.1.11.Final.jar:4.1.11.Final] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_131] ``` Please help me thanks 🥶 ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [August 10, 2020, 7:19am UTC](https://discuss.elastic.co/t/es-5-5-1-exception-caught-on-transport-layer-closing-connection-java-io-ioexception-operation-timed-out/240905/2 "2020-08-10T07:19:01Z")
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