# How can i connect my data nodes to another cluster (need to change cluster uuid)

**URL:** <https://discuss.elastic.co/t/how-can-i-connect-my-data-nodes-to-another-cluster-need-to-change-cluster-uuid/351270>\
**Category:** Elasticsearch\
**Tags:** docker\
**Created:** [January 17, 2024, 12:26pm UTC](https://discuss.elastic.co/t/how-can-i-connect-my-data-nodes-to-another-cluster-need-to-change-cluster-uuid/351270 "2024-01-17T12:26:18Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![donggyu04](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/donggyu04/32/130864_2.png) [@donggyu04](https://discuss.elastic.co/u/donggyu04)\
**Post date:** [January 17, 2024, 12:26pm UTC](https://discuss.elastic.co/t/how-can-i-connect-my-data-nodes-to-another-cluster-need-to-change-cluster-uuid/351270/1 "2024-01-17T12:26:18Z")

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same issue with [Data node’s cluster uuid diffrent from master node's cluster uuid](https://discuss.elastic.co/t/data-node-s-cluster-uuid-diffrent-from-master-nodes-cluster-uuid/196737)

but I want to connect my data nodes to new cluster without deleting their `data` directory. is there any way to this?

I must delete `data` directory to connect new cluster? i don't want to lose my data  
thanks in advance.

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**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [January 17, 2024, 12:49pm UTC](https://discuss.elastic.co/t/how-can-i-connect-my-data-nodes-to-another-cluster-need-to-change-cluster-uuid/351270/2 "2024-01-17T12:49:17Z")

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> [@donggyu04](#):
>
> but I want to connect my data nodes to new cluster without deleting their `data` directory. is there any way to this?

No, it is not possible. I would recommend using the [snapshot API](https://www.elastic.co/guide/en/elasticsearch/reference/8.11/snapshot-restore-apis.html) to create a backup of your data, then wipe the nodes and have them joing the new cluster. Once this is done you can mount and restore the snapshot to the new cluster.

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [February 14, 2024, 12:49pm UTC](https://discuss.elastic.co/t/how-can-i-connect-my-data-nodes-to-another-cluster-need-to-change-cluster-uuid/351270/3 "2024-02-14T12:49:28Z")

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