Backup overview and strategy

Elastic Stack Elasticsearch
1

Hi,

I have a 5 nodes elasticsearch cluster that I want to backup.

Backup to S3 works well but I have questions about snapshots way of working.

The first backup took 30 minutes and the other took 10 secondes.

I've concluded that snapshots are incremental (are they?)

If so, if I delete first snapshot, is there a merge mechanism?

Is there a way to make full backup everytime?

Thanks.

2

I've concluded that snapshots are incremental (are they?)

Yes they are.

If so, if I delete first snapshot, is there a merge mechanism?

Not really. If you delete the first snapshot files that are not needed anymore by any snapshot will be removed.

Is there a way to make full backup everytime?

Create a new repository everytime.

3

Thanks a lot for your answer!

4

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