Using snapshots to migrate data
One popular approach is to take a snapshot of your Elasticsearch OSS 6.x or 7.x indexes, create a Lucenia cluster, restore the snapshot on the new cluster, and point your clients to the new host.
The snapshot approach can mean running two clusters in parallel, but lets you validate that the Lucenia cluster is working in a way that meets your needs prior to modifying the Elasticsearch OSS cluster.
| Elasticsearch OSS version | Snapshot migration path |
|---|---|
| 5.x | Upgrade to 5.6, then upgrade to 6.8. Reindex all 5.x indexes, make a snapshot, and restore in Lucenia 0.x. |
| 6.x | Make a snapshot and restore in Lucenia 0.x. |
| 7.x | Make a snapshot and restore in Lucenia 0.x. |
| OpenSearch version | Snapshot migration path |
|---|---|
| 1.x | Make a snapshot and restore in Lucenia 0.x. |
| 2.x | Make a snapshot and restore in Lucenia 0.x. |