Sync 2 indices in the same cluster

[DanielR1 (DanielR)]

Hello!

Is there a way to keep in sync two elasticsearch indices?
Whatever is written by the app in one index, to be copied in a second index.
It is not a viable solution to make the app writing at the same time to both indices(or to kafka).

Thanks!

[Christian_Dahlqvist]

@DanielR1

Is there a way to keep in sync two elasticsearch indices?
Whatever is written by the app in one index, to be copied in a second index.

As far as I know there is nothing to support this within Elasticsearch.

@DanielR1

It is not a viable solution to make the app writing at the same time to both indices(or to kafka).

This is what I would have suggested. Why is this not an option?

[dadoonet (David Pilato)]

Is that within the same cluster? Otherwise look at Cross-cluster replication | Elasticsearch Guide [8.13] | Elastic

[DanielR1 (DanielR)]

Hello! Thank you for your answers.

It is not an option for now because it would imply pretty high additional hardware costs.

It is in the same cluster.

Thanks

[dadoonet (David Pilato)]

So what's the use case? May be we can suggest another solution to solve this.