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.