# Unable to join ES node with different cluster\_uuid

**URL:** <https://discuss.elastic.co/t/unable-to-join-es-node-with-different-cluster-uuid/142819>\
**Category:** Elasticsearch\
**Created:** [August 2, 2018, 10:53pm UTC](https://discuss.elastic.co/t/unable-to-join-es-node-with-different-cluster-uuid/142819 "2018-08-02T22:53:22Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![sc5283](https://avatars.discourse-cdn.com/v4/letter/s/97f17d/32.png) [@sc5283](https://discuss.elastic.co/u/sc5283)\
**Post date:** [August 2, 2018, 10:53pm UTC](https://discuss.elastic.co/t/unable-to-join-es-node-with-different-cluster-uuid/142819/1 "2018-08-02T22:53:22Z")

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I am unable to join ES node to a cluster (do not see it kibana monitoring / cluster nodes, and I can connect to the endpoint from all locations to the default port 9200).  
The only difference I found between all nodes is the cluster\_uuid which is different for that node.

Assuming this is the issue, how do I change the cluster\_uuid on that node to be the same as the others?

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**Author:** ![tdasch](https://avatars.discourse-cdn.com/v4/letter/t/58f4c7/32.png) [@tdasch](https://discuss.elastic.co/u/tdasch)\
**Post date:** [August 3, 2018, 7:46pm UTC](https://discuss.elastic.co/t/unable-to-join-es-node-with-different-cluster-uuid/142819/2 "2018-08-03T19:46:55Z")

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What do your elasticsearch.yml files look like for the nodes that are connected to the cluster versus the node that wont connect?

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<div class="post-metadata">

**Author:** ![sc5283](https://avatars.discourse-cdn.com/v4/letter/s/97f17d/32.png) [@sc5283](https://discuss.elastic.co/u/sc5283)\
**Post date:** [August 3, 2018, 8:21pm UTC](https://discuss.elastic.co/t/unable-to-join-es-node-with-different-cluster-uuid/142819/3 "2018-08-03T20:21:26Z")

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The only items configured in elasticsearch.yml:  
cluster.name: ES\_Cluster  
node.name: ${HOSTNAME}  
discovery.zen.minimum\_master\_nodes: 2

if I connect to the port on the nodes: (for es1 and es3),  
Note: I changed the uuids...do not know if they need to be secured

{  
"name" : "es1",  
"cluster\_name" : "ES\_Cluster",  
"cluster\_uuid" : "123456789",  
"version" : {  
"number" : "6.3.0",  
"build\_flavor" : "default",  
"build\_type" : "rpm",  
"build\_hash" : "424e937",  
"build\_date" : "2018-06-11T23:38:03.357887Z",  
"build\_snapshot" : false,  
"lucene\_version" : "7.3.1",  
"minimum\_wire\_compatibility\_version" : "5.6.0",  
"minimum\_index\_compatibility\_version" : "5.0.0"  
},  
"tagline" : "You Know, for Search"  
}

for node2 this is the result: (cluster\_uuid is different)

{  
"name" : "es2",  
"cluster\_name" : "ES\_Cluster",  
"cluster\_uuid" : "abcdef12345",  
"version" : {  
"number" : "6.3.0",  
"build\_flavor" : "default",  
"build\_type" : "rpm",  
"build\_hash" : "424e937",  
"build\_date" : "2018-06-11T23:38:03.357887Z",  
"build\_snapshot" : false,  
"lucene\_version" : "7.3.1",  
"minimum\_wire\_compatibility\_version" : "5.6.0",  
"minimum\_index\_compatibility\_version" : "5.0.0"  
},  
"tagline" : "You Know, for Search"  
}

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [August 31, 2018, 8:21pm UTC](https://discuss.elastic.co/t/unable-to-join-es-node-with-different-cluster-uuid/142819/4 "2018-08-31T20:21:27Z")

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