Restore elasticsearch snapshot to existing index

Elastic Stack Elasticsearch
1

So I want to migrate Elasticsearch data to new cluster and n my old cluster I create daily snapshot. I restore the snapshot to new cluster once, and the next day when I try to restore again I get an error because the index is existed. Is it by design or are there any way to restore snapshot to existing index by appending data on existing index?

2

You can only restore on a closed index. So close it before.

1 Like
3
  1. close then restore
  2. rename the index when restore
  3. delete old index and then restore

and in case1，restore is incremental，can reuse old segment file if they don't change

4

thanks for the answer!

5

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