Delete and restore snapshot on AWS s3

Elastic Stack Elasticsearch
1

Hi,

I'd like to understand how delete and restore functions work. I thought if you delete a snapshot from S3, you will not be able to restore it later, but I'm having some weird behaviour. For example, if I code the following lines from terminal:

// curl -XDELETE localhost:9200/_snapshot/repository-s3/snap1
// curl -XGET 'localhost:9200/_snapshot/repository-s3/_all?pretty=true'
// curl -XPOST localhost:9200/_snapshot/repository-s3/snap1
// curl -XGET 'localhost:9200/_snapshot/repository-s3/_all?pretty=true'

After deleting snap1, it doesnt shows when I made the GET call and it doesn't appear either on AWS s3, but after restoring snap1, it shows again on terminal and on AWS s3 too.

I thought the restore call only worked to restore specified snapshot to the cluster, but not in AWS s3 repository.

Does it make any sense?

Any help appreciated.

2

You seem to be describing this step as "restore", but it isn't. I think this is making a new snapshot called snap1. A restore looks like this:

POST /_snapshot/my_backup/snapshot_1/_restore

Note the /_restore on the end.

3

Thanks David for the provided explanation. I thought "PUT" and "POST" make the different between creating a new snapshot and restoring it, but I was wrong, It works exactly like you said, I have already checked it.

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4

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