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i have elasticsearch cluster running. as of now there is no backup enabled till now neither S3 or NAS. we want to upgrade elasticsearch cluster on a new servers and the data size is 100gb of 2 indexes.

since we dont have backup, can we copy the data stored directory from the running cluster on all three nodes to a new cluster will this work?

current running version of es:6.2.3 to es:6.3.4 please advice.

Thanks in advance.

Amjad Hussain Syed
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  • In theory copying should work, but no guarantee. There is https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-snapshots.html – avolkmann Aug 16 '18 at 08:25

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Taking a copy of indices folder on the running system of your elasticsearch cluster and restoring on the new es-cluster working fine.

Thanks to @Andreas Volkmann

Amjad Hussain Syed
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