Automatic Rollover on Elastic Serverless deployment?

Elastic Stack Elasticsearch
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1

I wanted to configure automatic rollover for my index in a new Elastic Serverless deployment. From the docs, it looks like it should be managed automatically by the platform itself.
Is it true? What is the threshold?

I've tried to setup a index template, create an index with "is_write_index": true. When I try to call the Rollover API on the alias, I get "co.elastic.clients.elasticsearch._types.ElasticsearchException: [es/indices.rollover] failed: [illegal_argument_exception] rollover with conditions is not supported in serverless mode"

which seems to be confirming the automated behaviour.
Testing the same on a local elasticsearch instance works just fine.

2

Hello, correct, rollover is automatic on Serverless. More precisely, it's managed with Data stream lifecycles, as ILM is not available on Serverless.

3

Thanks for the clarification.
Does it apply also on Index Templates with Data Stream flag set to False?

4

No. My understanding is that using an index alias + index templates + rollover is not supported on Serverless, you need to switch to data streams instead. Note that data stream lifecycles are also supported in standard Elasticsearch.