# ElasticSearch 5.4 - One node of 5 nodes not joining the cluster

**URL:** <https://discuss.elastic.co/t/elasticsearch-5-4-one-node-of-5-nodes-not-joining-the-cluster/86530>\
**Category:** Elasticsearch\
**Created:** [May 20, 2017, 3:01pm UTC](https://discuss.elastic.co/t/elasticsearch-5-4-one-node-of-5-nodes-not-joining-the-cluster/86530 "2017-05-20T15:01:39Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![techpanga](https://avatars.discourse-cdn.com/v4/letter/t/3ab097/32.png) [@techpanga](https://discuss.elastic.co/u/techpanga)\
**Post date:** [May 20, 2017, 3:01pm UTC](https://discuss.elastic.co/t/elasticsearch-5-4-one-node-of-5-nodes-not-joining-the-cluster/86530/1 "2017-05-20T15:01:39Z")

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Hi

Our cluster got 5 nodes. 4 are joined the cluster. 1 out of 5 is not joining cluster. it is unable to ping.

Please suggest about troubleshooting tips.

[2017-05-20T14:58:54,020][TRACE][o.e.d.z.UnicastZenPing] [node-4] [447] failed to ping {#zen\_unicast\_10.156.197.14:9200\_0#}{t-SM-w28QQeAR2XFjeXbIg}{10.156.197.14}{10.156.197.14:9200}  
org.elasticsearch.transport.ConnectTransportException: [][10.156.197.14:9200] handshake\_timeout[3s]  
at org.elasticsearch.transport.TcpTransport.executeHandshake(TcpTransport.java:1589) ~[elasticsearch-5.4.0.jar:5.4.0]  
at org.elasticsearch.transport.TcpTransport.openConnection(TcpTransport.java:533) ~[elasticsearch-5.4.0.jar:5.4.0]  
at org.elasticsearch.transport.TcpTransport.openConnection(TcpTransport.java:115) ~[elasticsearch-5.4.0.jar:5.4.0]  
at org.elasticsearch.transport.TransportService.openConnection(TransportService.java:334) ~[elasticsearch-5.4.0.jar:5.4.0]  
at org.elasticsearch.discovery.zen.UnicastZenPing$PingingRound.getOrConnect(UnicastZenPing.java:399) ~[elasticsearch-5.4.0.jar:5.4.0]  
at org.elasticsearch.discovery.zen.UnicastZenPing$3.doRun(UnicastZenPing.java:508) [elasticsearch-5.4.0.jar:5.4.0]  
at org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingAbstractRunnable.doRun(ThreadContext.java:638) [elasticsearch-5.4.0.jar:5.4.0]  
at org.elasticsearch.common.util.concurrent.AbstractRunnable.run(AbstractRunnable.java:37) [elasticsearch-5.4.0.jar:5.4.0]  
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [?:1.8.0\_111]  
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [?:1.8.0\_111]  
at java.lang.Thread.run(Thread.java:745) [?:1.8.0\_111]

-thanks in Advance.  
dp

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**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [May 20, 2017, 10:13pm UTC](https://discuss.elastic.co/t/elasticsearch-5-4-one-node-of-5-nodes-not-joining-the-cluster/86530/2 "2017-05-20T22:13:52Z")

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Unicast should use port 9300, via the transport protocol.

What does your config look like?

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**Author:** ![xeraa](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/xeraa/32/48181_2.png) [@xeraa](https://discuss.elastic.co/u/xeraa)\
**Post date:** [May 21, 2017, 9:29pm UTC](https://discuss.elastic.co/t/elasticsearch-5-4-one-node-of-5-nodes-not-joining-the-cluster/86530/3 "2017-05-21T21:29:07Z")

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Guess this was fixed in [ElasticSearch 5.4 Nodes unable to join cluster - Troubleshooting](https://discuss.elastic.co/t/elasticsearch-5-4-nodes-unable-to-join-cluster-troubleshooting/86536)

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<div class="post-metadata">

**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [May 21, 2017, 9:30pm UTC](https://discuss.elastic.co/t/elasticsearch-5-4-one-node-of-5-nodes-not-joining-the-cluster/86530/4 "2017-05-21T21:30:52Z")

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