Sync 2 indices in the same cluster

Elastic Stack Elasticsearch
1

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!

2

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

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

3

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

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4

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

5

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

6

When we create a connector, let's say postgresql for example , the index is defined by default and i didn't see option to add a custom index over a connector.

Is this default behavior that the index is preconfigured?
As I need a different index over the same connector, I am not able to find any such way to do this. If I have to reindex again and again that would simply be a overhead of syncing docs between indexes.

I am a beginner and any kind of help is appreciated.

Thank you.

7

Short answer: use an alias. That's immediate.
I believe that you can set the index name you want but I'm not that familiar with the connectors.

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