Is it possible to directly upgrade (rolling) Elasticsearch 6.3.0 to 7.7.0?

Elastic Stack Elasticsearch
1

Hi,

I would like to if it is possible to upgrade my existing Elasticsearch v6.3.0 to v7.7.0, without introducing an intermediate version? Below is the rolling upgrade link.

https://www.elastic.co/guide/en/elasticsearch/reference/7.7/rolling-upgrades.html

Thank you.

2

You can reindex the data in the new cluster. Using reindex from remote for example.

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3

Per the doc you linked to, no;

Rolling upgrades are supported:

  • Between minor versions
  • From 5.6 to 6.8
  • From 6.8 to 7.7.1
  • From any version since 7.7.0 to 7.7.1

Upgrading directly to 7.7.1 from 6.7 or earlier requires a full cluster restart.

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