Upgrade Elasticsearch from 5 to 7

Question

I want to upgrade my single node elasticsearch from version 5.30 to 7.2. What is the best possible ways of doing it?

Answer 1

Please follow the elasticsearch official document https://www.elastic.co/guide/en/elasticsearch/reference/current/setup-upgrade.html for upgrading your elasticsearch version.

Some important points to take care from upgrading 5.x to 7.3:

• Elasticsearch can read indices created in the previous major version. If you have indices created in 5.x or before, you must reindex or delete them before upgrading to 7.3.1. Elasticsearch nodes will fail to start if incompatible indices are present.

• Take care of things mentioned in https://www.elastic.co/guide/en/elasticsearch/reference/current/setup-upgrade.html#_preparing_to_upgrade

  Let me know if you need additional information.