In this post, I will share how we migrated from Elasticsearch 1.6 to 6.8 with harsh constraints like zero downtime, no data loss, and zero bugs. Upgrade to 6.8, upgrade to 7.10.2, and upgrade to OpenSearch.My last task at BigPanda was to upgrade an existing service that was using Elasticsearch version 1.7 to a newer Elasticsearch version, 6.8.1. ![]() Upgrade to 6.8, reindex all 5.x indices, and upgrade to OpenSearch. Upgrade to 5.6, upgrade to 6.8, reindex all 5.x indices, upgrade to 7.10.2, and upgrade to OpenSearch. You can follow this upgrade path table: Elasticsearch version OpenSearch recommends upgrading ES from 6.8.0 to 7.10.2 before upgrading to OpenSearch 1.0Īnother important element to consider is that the minimum supported index version is 6.0, so all 5.0 indices need to be reindexed before the migration. If you are working with an older Elasticsearch version, you need to upgrade to 6.8.0 first, at the very least. OpenSearch 1.0 can be upgraded from Elasticsearch 6.8.0 to 7.10.2. Version considerations when migrating to OpenSearch How To: Upgrade from Open Distro to OpenSearch (OpenSearch).Elasticsearch Upgrade – How to Upgrade Versions Without Data Loss (Opster).You can check our related articles about system migrations/upgrades: The only element users have to consider is their cluster version. If you’re looking to migrate from Elasticsearch to OpenSearch, OpenSearch supports migration seamlessly using rolling upgrades. ![]()
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