# Transport Client not getting connected 5.6.3 Java API **URL:** \ **Category:** Elasticsearch\ **Created:** [December 13, 2017, 4:41am UTC](https://discuss.elastic.co/t/transport-client-not-getting-connected-5-6-3-java-api/111479 "2017-12-13T04:41:21Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![amathuria](https://avatars.discourse-cdn.com/v4/letter/a/e9c0ed/32.png) [@amathuria](https://discuss.elastic.co/u/amathuria)\ **Post date:** [December 13, 2017, 4:41am UTC](https://discuss.elastic.co/t/transport-client-not-getting-connected-5-6-3-java-api/111479/1 "2017-12-13T04:41:22Z")
Continuing the discussion from [NoNodeAvailableException, cannot connect Java API and Elasticsearch](https://discuss.elastic.co/t/nonodeavailableexception-cannot-connect-java-api-and-elasticsearch/25474/7): > [@NoNodeAvailableException, cannot connect Java API and Elasticsearch](https://discuss.elastic.co/t/nonodeavailableexception-cannot-connect-java-api-and-elasticsearch/25474/7): > > be Hi, I am new to elasticsearch and I wanted to use the Java APIs in Scala to communicate with my ES cluster (one node). This is my code right now: ``` var client:TransportClient = null def createConnection(addresses:java.util.List[String]):Unit = { try { client = new PreBuiltTransportClient(Settings.EMPTY) .addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName(XX.XXX.X.XXX), 9300)); val nodes = client.connectedNodes() if (nodes.toList.isEmpty) { logger.info("No NODES Connected") } nodes.toList.foreach { x => logger.info("NODE : " + x) } } catch { case t: Throwable => logger.error("failed to add transport address, got exception: " + t.getStackTrace.mkString(" ")) System.exit(1) } ``` I am running Elasticsearch docker with the following command : docker run -p 9200:9200 -p 9300:9300 -e "discovery.type=single-node" -e "transport.host=0.0.0.0" -e "cluster.name=elasticsearch" -e "network.host=0.0.0.0" [docker.elastic.co/elasticsearch/elasticsearch:5.6.3](http://docker.elastic.co/elasticsearch/elasticsearch:5.6.3) I am getting connected nodes as an empty list. When I try to run the execute command I get NoNodesAvailableException. Could you please tell me what the problem could be? Thanks in advance 🙂 ---
**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\ **Post date:** [December 13, 2017, 6:23am UTC](https://discuss.elastic.co/t/transport-client-not-getting-connected-5-6-3-java-api/111479/2 "2017-12-13T06:23:55Z")
Is the node running? Can you connect it over the REST layer ? (9200) What are the logs? BTW there is now the REST Client which I encourage you to use. ---
**Author:** ![amathuria](https://avatars.discourse-cdn.com/v4/letter/a/e9c0ed/32.png) [@amathuria](https://discuss.elastic.co/u/amathuria)\ **Post date:** [December 13, 2017, 6:35am UTC](https://discuss.elastic.co/t/transport-client-not-getting-connected-5-6-3-java-api/111479/3 "2017-12-13T06:35:29Z")
Yes I can connect to it. I get the following response after curl command: 1513146527 06:28:47 elasticsearch yellow 1 1 5 5 0 0 5 0 - 50.0% These are the logs of the node : ``` [2017-12-13T05:46:23,255][INFO][o.e.n.Node] [] initializing ... [2017-12-13T05:46:23,454][INFO][o.e.e.NodeEnvironment] [jz6H1L5] using [1] data paths, mounts [[/ (overlay)]], net usable_space [250.4gb], net total_space [307.7gb], spins? [possibly], types [overlay] [2017-12-13T05:46:23,454][INFO][o.e.e.NodeEnvironment] [jz6H1L5] heap size [1.9gb], compressed ordinary object pointers [true] [2017-12-13T05:46:23,457][INFO][o.e.n.Node] node name [jz6H1L5] derived from node ID [jz6H1L5HThSTM3E0uWYDWg]; set [node.name] to override [2017-12-13T05:46:23,458][INFO][o.e.n.Node] version[5.6.3], pid[1], build[1a2f265/2017-10-06T20:33:39.012Z], OS[Linux/4.9.24-coreos/amd64], JVM[Oracle Corporation/OpenJDK 64-Bit Server VM/1.8.0_141/25.141-b16] [2017-12-13T05:46:23,458][INFO][o.e.n.Node] JVM arguments [-Xms2g, -Xmx2g, -XX:+UseConcMarkSweepGC, -XX:CMSInitiatingOccupancyFraction=75, -XX:+UseCMSInitiatingOccupancyOnly, -XX:+AlwaysPreTouch, -Xss1m, -Djava.awt.headless=true, -Dfile.encoding=UTF-8, -Djna.nosys=true, -Djdk.io.permissionsUseCanonicalPath=true, -Dio.netty.noUnsafe=true, -Dio.netty.noKeySetOptimization=true, -Dio.netty.recycler.maxCapacityPerThread=0, -Dlog4j.shutdownHookEnabled=false, -Dlog4j2.disable.jmx=true, -Dlog4j.skipJansi=true, -XX:+HeapDumpOnOutOfMemoryError, -Des.cgroups.hierarchy.override=/, -Des.path.home=/usr/share/elasticsearch] [2017-12-13T05:46:26,040][INFO][o.e.p.PluginsService] [jz6H1L5] loaded module [aggs-matrix-stats] [2017-12-13T05:46:26,041][INFO][o.e.p.PluginsService] [jz6H1L5] loaded module [ingest-common] [2017-12-13T05:46:26,041][INFO][o.e.p.PluginsService] [jz6H1L5] loaded module [lang-expression] [2017-12-13T05:46:26,041][INFO][o.e.p.PluginsService] [jz6H1L5] loaded module [lang-groovy] [2017-12-13T05:46:26,042][INFO][o.e.p.PluginsService] [jz6H1L5] loaded module [lang-mustache] [2017-12-13T05:46:26,042][INFO][o.e.p.PluginsService] [jz6H1L5] loaded module [lang-painless] [2017-12-13T05:46:26,042][INFO][o.e.p.PluginsService] [jz6H1L5] loaded module [parent-join] [2017-12-13T05:46:26,042][INFO][o.e.p.PluginsService] [jz6H1L5] loaded module [percolator] [2017-12-13T05:46:26,043][INFO][o.e.p.PluginsService] [jz6H1L5] loaded module [reindex] [2017-12-13T05:46:26,043][INFO][o.e.p.PluginsService] [jz6H1L5] loaded module [transport-netty3] [2017-12-13T05:46:26,043][INFO][o.e.p.PluginsService] [jz6H1L5] loaded module [transport-netty4] [2017-12-13T05:46:26,044][INFO][o.e.p.PluginsService] [jz6H1L5] loaded plugin [ingest-geoip] [2017-12-13T05:46:26,044][INFO][o.e.p.PluginsService] [jz6H1L5] loaded plugin [ingest-user-agent] [2017-12-13T05:46:26,044][INFO][o.e.p.PluginsService] [jz6H1L5] loaded plugin [x-pack] [2017-12-13T05:46:30,581][INFO][o.e.x.m.j.p.l.CppLogMessageHandler] [controller/67] [Main.cc@128] controller (64 bit): Version 5.6.3 (Build 5bf431d29b5bff) Copyright (c) 2017 Elasticsearch BV [2017-12-13T05:46:30,650][INFO][o.e.d.DiscoveryModule] [jz6H1L5] using discovery type [single-node] [2017-12-13T05:46:32,170][INFO][o.e.n.Node] initialized [2017-12-13T05:46:32,170][INFO][o.e.n.Node] [jz6H1L5] starting ... [2017-12-13T05:46:32,537][INFO][o.e.t.TransportService] [jz6H1L5] publish_address {10.2.92.83:9300}, bound_addresses {[::]:9300} [2017-12-13T05:46:32,555][WARN][o.e.b.BootstrapChecks] [jz6H1L5] max virtual memory areas vm.max_map_count [65530] is too low, increase to at least [262144] [2017-12-13T05:46:32,589][INFO][o.e.c.s.ClusterService] [jz6H1L5] new_master {jz6H1L5}{jz6H1L5HThSTM3E0uWYDWg}{uS57nWWASUOgBZAojiUHCQ}{10.2.92.83}{10.2.92.83:9300}{ml.max_open_jobs=10, ml.enabled=true}, reason: single-node-start-initial-join[{jz6H1L5}{jz6H1L5HThSTM3E0uWYDWg}{uS57nWWASUOgBZAojiUHCQ}{10.2.92.83}{10.2.92.83:9300}{ml.max_open_jobs=10, ml.enabled=true}] [2017-12-13T05:46:32,666][INFO][o.e.x.s.t.n.SecurityNetty4HttpServerTransport] [jz6H1L5] publish_address {10.2.92.83:9200}, bound_addresses {[::]:9200} [2017-12-13T05:46:32,667][INFO][o.e.n.Node] [jz6H1L5] started [2017-12-13T05:46:33,024][INFO][o.e.g.GatewayService] [jz6H1L5] recovered [0] indices into cluster_state [2017-12-13T05:46:33,541][INFO][o.e.x.m.MachineLearningTemplateRegistry] [jz6H1L5] successfully created .ml-meta index template [2017-12-13T05:46:33,670][INFO][o.e.x.m.MachineLearningTemplateRegistry] [jz6H1L5] successfully created .ml-notifications index template [2017-12-13T05:46:33,734][INFO][o.e.x.m.MachineLearningTemplateRegistry] [jz6H1L5] successfully created .ml-state index template [2017-12-13T05:46:33,841][INFO][o.e.x.m.MachineLearningTemplateRegistry] [jz6H1L5] successfully created .ml-anomalies- index template [2017-12-13T05:46:34,371][INFO][o.e.l.LicenseService] [jz6H1L5] license [857c851e-fb41-4880-ba28-6241bab0d2a2] mode [trial] - valid [2017-12-13T05:46:42,636][INFO][o.e.c.m.MetaDataCreateIndexService] [jz6H1L5] [.monitoring-es-6-2017.12.13] creating index, cause [auto(bulk api)], templates [.monitoring-es], shards [1]/[1], mappings [doc] [2017-12-13T05:46:42,891][INFO][o.e.c.m.MetaDataCreateIndexService] [jz6H1L5] [.watches] creating index, cause [auto(bulk api)], templates [watches], shards [1]/[1], mappings [watch] [2017-12-13T05:46:43,586][INFO][o.e.c.m.MetaDataMappingService] [jz6H1L5] [.watches/6Rd8EeMVT2qmRn92NWWJdg] update_mapping [watch] [2017-12-13T05:46:46,261][INFO][o.e.m.j.JvmGcMonitorService] [jz6H1L5] [gc][14] overhead, spent [273ms] collecting in the last [1s] [2017-12-13T05:47:44,486][INFO][o.e.c.m.MetaDataCreateIndexService] [jz6H1L5] [.triggered_watches] creating index, cause [auto(bulk api)], templates [triggered_watches], shards [1]/[1], mappings [triggered_watch] [2017-12-13T05:47:45,335][INFO][o.e.c.m.MetaDataCreateIndexService] [jz6H1L5] [.watcher-history-6-2017.12.13] creating index, cause [auto(bulk api)], templates [.watch-history-6], shards [1]/[1], mappings [doc] [2017-12-13T05:47:45,498][INFO][o.e.c.m.MetaDataCreateIndexService] [jz6H1L5] [.monitoring-alerts-6] creating index, cause [auto(bulk api)], templates [.monitoring-alerts], shards [1]/[1], mappings [doc] [2017-12-13T05:47:45,876][INFO][o.e.c.m.MetaDataMappingService] [jz6H1L5] [.watcher-history-6-2017.12.13/TrJTCOZmSraVbrvWpe6e1Q] update_mapping [doc] [2017-12-13T05:47:46,019][INFO][o.e.c.m.MetaDataMappingService] [jz6H1L5] [.watcher-history-6-2017.12.13/TrJTCOZmSraVbrvWpe6e1Q] update_mapping [doc] ``` Okay. I will try this with the REST Client then. ---
**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\ **Post date:** [December 13, 2017, 7:41am UTC](https://discuss.elastic.co/t/transport-client-not-getting-connected-5-6-3-java-api/111479/4 "2017-12-13T07:41:57Z")
It sounds like `x-pack` is running. Which might indicate that you need to pass a login/password as it is probably secured, no? When you used the REST endpoint, did you pass some credentials? ---
**Author:** ![amathuria](https://avatars.discourse-cdn.com/v4/letter/a/e9c0ed/32.png) [@amathuria](https://discuss.elastic.co/u/amathuria)\ **Post date:** [December 13, 2017, 8:08am UTC](https://discuss.elastic.co/t/transport-client-not-getting-connected-5-6-3-java-api/111479/5 "2017-12-13T08:08:23Z")
Yes I did. I gave the following curl command: curl [http://XX.XXX.X.XXX:9200/\_cat/health](http://XX.XXX.X.XXX:9200/_cat/health) --user elastic:changeme Do I need to provide this while adding transport address? ---
**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\ **Post date:** [December 13, 2017, 10:27am UTC](https://discuss.elastic.co/t/transport-client-not-getting-connected-5-6-3-java-api/111479/6 "2017-12-13T10:27:08Z")
Of course yes. Otherwise security is useless if you can simply join a "secured" cluster without any auth! 😛 If you want to use the REST Client, read [https://www.elastic.co/guide/en/elasticsearch/client/java-rest/current/\_basic\_authentication.html](https://www.elastic.co/guide/en/elasticsearch/client/java-rest/current/_basic_authentication.html) With Transport, you need to read [https://www.elastic.co/guide/en/x-pack/current/java-clients.html](https://www.elastic.co/guide/en/x-pack/current/java-clients.html) ---
**Author:** ![amathuria](https://avatars.discourse-cdn.com/v4/letter/a/e9c0ed/32.png) [@amathuria](https://discuss.elastic.co/u/amathuria)\ **Post date:** [December 13, 2017, 10:29am UTC](https://discuss.elastic.co/t/transport-client-not-getting-connected-5-6-3-java-api/111479/7 "2017-12-13T10:29:41Z")
Oh okay, thanks a lot for the help 🙂 ---
**Author:** ![amathuria](https://avatars.discourse-cdn.com/v4/letter/a/e9c0ed/32.png) [@amathuria](https://discuss.elastic.co/u/amathuria)\ **Post date:** [December 13, 2017, 5:58pm UTC](https://discuss.elastic.co/t/transport-client-not-getting-connected-5-6-3-java-api/111479/8 "2017-12-13T17:58:49Z")
Works fine after I set xpack.security.enabled=false while running the docker. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [January 10, 2018, 5:59pm UTC](https://discuss.elastic.co/t/transport-client-not-getting-connected-5-6-3-java-api/111479/9 "2018-01-10T17:59:18Z")
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