# Node not connected at org.elasticsearch.transport.TcpTransport.get **URL:** \ **Category:** Elasticsearch\ **Created:** [August 5, 2019, 1:26pm UTC](https://discuss.elastic.co/t/node-not-connected-at-org-elasticsearch-transport-tcptransport-get/193804 "2019-08-05T13:26:52Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![MichalF1](https://avatars.discourse-cdn.com/v4/letter/m/ba8739/32.png) [@MichalF1](https://discuss.elastic.co/u/MichalF1)\ **Post date:** [August 5, 2019, 1:26pm UTC](https://discuss.elastic.co/t/node-not-connected-at-org-elasticsearch-transport-tcptransport-get/193804/1 "2019-08-05T13:26:52Z")
Hello, i have a problem with nodes connections. When i start them everything seems OK and then i try to send to master some data and getting this error. I think problem is at master node but do not know exactly where. I have tried a lot of things but nothing helps. **Log from Master:** [2019-08-05T14:14:15,731][INFO][o.e.c.r.a.AllocationService] [sm-controller-comm] Cluster health status changed from [GREEN] to [YELLOW] (reason: [{es-datanode1-comm}{UTSjPxnLTfGjYL8uZoJ8VQ}{dfUtR2K3QXu8Qsi8g\_8jLg}{10.60.34.15}{10 .60.34.15:9300} left]). [2019-08-05T14:14:15,732][INFO][o.e.c.s.ClusterService] [sm-controller-comm] removed {{es-datanode1-comm}{UTSjPxnLTfGjYL8uZoJ8VQ}{dfUtR2K3QXu8Qsi8g\_8jLg}{10.60.34.15}{10.60.34.15:9300},}, reason: zen-disco-node-left({es-datanod e1-comm}{UTSjPxnLTfGjYL8uZoJ8VQ}{dfUtR2K3QXu8Qsi8g\_8jLg}{10.60.34.15}{10.60.34.15:9300}), reason(left)[{es-datanode1-comm}{UTSjPxnLTfGjYL8uZoJ8VQ}{dfUtR2K3QXu8Qsi8g\_8jLg}{10.60.34.15}{10.60.34.15:9300} left] [2019-08-05T14:14:18,006][DEBUG][o.e.a.a.c.n.i.TransportNodesInfoAction] [sm-controller-comm] failed to execute on node [UTSjPxnLTfGjYL8uZoJ8VQ] org.elasticsearch.transport.NodeNotConnectedException: [es-datanode1-comm][10.60.34.15:9300] Node not connected at org.elasticsearch.transport.TcpTransport.getConnection(TcpTransport.java:640) ~[elasticsearch-5.6.15.jar:5.6.15] at org.elasticsearch.transport.TcpTransport.getConnection(TcpTransport.java:117) ~[elasticsearch-5.6.15.jar:5.6.15] at org.elasticsearch.transport.TransportService.getConnection(TransportService.java:548) ~[elasticsearch-5.6.15.jar:5.6.15] at org.elasticsearch.transport.TransportService.sendRequest(TransportService.java:524) ~[elasticsearch-5.6.15.jar:5.6.15] at org.elasticsearch.action.support.nodes.TransportNodesAction$AsyncAction.start(TransportNodesAction.java:197) ~[elasticsearch-5.6.15.jar:5.6.15] at org.elasticsearch.action.support.nodes.TransportNodesAction.doExecute(TransportNodesAction.java:89) ~[elasticsearch-5.6.15.jar:5.6.15] at org.elasticsearch.action.support.nodes.TransportNodesAction.doExecute(TransportNodesAction.java:52) ~[elasticsearch-5.6.15.jar:5.6.15] at org.elasticsearch.action.support.TransportAction$RequestFilterChain.proceed(TransportAction.java:170) ~[elasticsearch-5.6.15.jar:5.6.15] **elasticsearch.yml enabled rows:** node.name: ${HOSTNAME} network.host: _local_,_ens192_ node.master: true node.data: false node.ingest: false path.repo: ["/mnt/perf\_data/elasticsearch\_backup/"] **CURL** curl -XGET 10.60.34.12:9200/\_cat/nodes 10.60.34.12 9 67 1 0.04 0.06 0.05 m \* sm-controller-comm 10.60.34.16 14 99 3 0.01 0.05 0.09 d - es-datanode2-comm 10.60.34.15 14 99 3 0.11 0.06 0.08 d - es-datanode1-comm **Log (different time) data node:** [2019-08-05T15:30:36,326][INFO][o.e.d.z.ZenDiscovery] [es-datanode1-comm] master\_left [{sm-controller-comm}{zUz8rT3bRIuf-Nc4FM3X5w}{6mZmt5xLTJS-bOr44KTNAg}{10.60.34.12}{10.60.34.12:9300}], reason [transport disconnected] [2019-08-05T15:30:36,328][WARN][o.e.d.z.ZenDiscovery] [es-datanode1-comm] master left (reason = transport disconnected), current nodes: nodes: {es-datanode1-comm}{UTSjPxnLTfGjYL8uZoJ8VQ}{50\_RxNWTQBuel\_uQC0zPZw}{10.60.34.15}{10.60.34.15:9300}, local {es-datanode2-comm}{JP2GSNy9RdaXeC6iqgfT8Q}{8qWEuQoIQRiBtvYF5pll2g}{10.60.34.16}{10.60.34.16:9300} {sm-controller-comm}{zUz8rT3bRIuf-Nc4FM3X5w}{6mZmt5xLTJS-bOr44KTNAg}{10.60.34.12}{10.60.34.12:9300}, master [2019-08-05T15:30:36,336][WARN][o.e.c.NodeConnectionsService] [es-datanode1-comm] failed to connect to node {sm-controller-comm}{zUz8rT3bRIuf-Nc4FM3X5w}{6mZmt5xLTJS-bOr44KTNAg}{10.60.34.12}{10.60.34.12:9300} (tried [1] times) org.elasticsearch.transport.ConnectTransportException: [sm-controller-comm][10.60.34.12:9300] connect\_timeout[30s] at org.elasticsearch.transport.netty4.Netty4Transport.connectToChannels(Netty4Transport.java:363) ~[?:?] at org.elasticsearch.transport.TcpTransport.openConnection(TcpTransport.java:570) ~[elasticsearch-5.6.15.jar:5.6.15] at org.elasticsearch.transport.TcpTransport.connectToNode(TcpTransport.java:473) ~[elasticsearch-5.6.15.jar:5.6.15] at org.elasticsearch.transport.TransportService.connectToNode(TransportService.java:342) ~[elasticsearch-5.6.15.jar:5.6.15] at org.elasticsearch.transport.TransportService.connectToNode(TransportService.java:329) ~[elasticsearch-5.6.15.jar:5.6.15] at org.elasticsearch.cluster.NodeConnectionsService.validateAndConnectIfNeeded(NodeConnectionsService.java:154) [elasticsearch-5.6.15.jar:5.6.15] Best regards, Elastic Newbie Michal ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [September 2, 2019, 1:37pm UTC](https://discuss.elastic.co/t/node-not-connected-at-org-elasticsearch-transport-tcptransport-get/193804/2 "2019-09-02T13:37:14Z")
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