[TIL]Elasticsearch Upgrade and Migration

Migration은 Data만을 이관 , Upgrade는 인프라 변경에 필요한 인증 등 내용
필요한 케이스는 아래와 같았다.

• Elasticsearch에서 Opensearch로 데이터 이관
• Opensearch Minor Versio Upgrade

아래 조사한 내용을 바탕으로 각각 reindex와 rolling upgrade를 진행하려고 한다.

Upgrade

https://www.elastic.co/guide/en/elasticsearch/reference/current/setup-upgrade.html

• Rolling upgrades
• Full cluster restart upgrade
• Reindex before upgrading

Migration

https://www.elastic.co/guide/en/cloud/current/ec-migrate-data.html

• Indexing from the source
• Reindex from a remote cluster
• Restore from a snapshot

from elasticsearch to opensearch

https://bonsai.io/blog/migrating-from-elasticsearch-to-opensearch
OpenSearch is capable of migrating Elasticsearch snapshots from version 6.0.0 to 7.11.2

using elasticsearch-dump

https://github.com/elasticsearch-dump/elasticsearch-dump