What is the best way to migrate from elasticsearch 8.2.0 to opensearch 2.7.0?

[cucukaka]

openserach version 2.7.0
elasticsearch version 8.2.0

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I want to migate from elasticsearch 8.2.0 to opensearch 2.7.0.
Making snapshot on Minio in elasticsearch.
But I read some article, " snapshots taken with Elasticsearch 7.12.0 and above are not compatible with OpenSearch. If you use a version above 7.12.0. "
and I just do that, of cause Failed.

{
  "error": {
    "root_cause": [
      {
        "type": "repository_missing_exception",
        "reason": "[minio-backup] missing"
      }
    ],
    "type": "repository_missing_exception",
    "reason": "[minio-backup] missing"
  },
  "status": 404
}

So what is the best way to migrate from elasticsearch 8.2.0 to opensearch 2.7.0 ??

[Gsmitt]

Hey @cucukaka

Im not sure, what I have done before is create a new instance “Opensearch-2.7.0” route all node/s to opensearch-2.7.0/ Keeep Elasticsearch-8.x.x on till the Index retenction period is completed. then you can remove/Delete Elasticsearch. No down time, and you have all you logs/message/doc’. Just an idea