Which version of Elasticsearch can be migrated to Open search 1.3.6

OpenSearch
1

Versions
OpenSearch = 1.3.6
Operating System = Debian

Describe the issue:
I wanted to know which version of Elasticsearch can be migrated to Open search 1.3.6, we are using Graylog with Elasticsearch 7.16 and we wanted to move to OS from ES.

from Graylog it says that anything beyond ES7.10 wont be migrating to Opensearch version of 1.X

Please guide us,

Regards,
SAM

2

@sameer29nov what you have read from Greylog is correct in the sense that it’s less straightforward to migrate from Elasticsearch 7.16 to OpenSearch. The reason is you cannot do an in place upgrade. You will need to setup some sort of data migration job to get the data from the Elasticsearch indexes into the OpenSearch indexes.