Do you need a paid x-pack license to run cross cluster search? Or is it possible to use this feature on the free license?
The Elasticsearch documentation on cross cluster search and security indicates that to do cross cluster searching you need to:
Enable the Elasticsearch security features on every node in each connected cluster. ...
X-pack, in turn, requires a paid license. Accordingly, it seems that you need a paid license to do cross cluster searching. Am I reading this correctly? Is cross cluster searching a feature that is unavailable on the free version?
According to https://www.elastic.co/subscriptions you don't need a commercial license to run cross cluster search.
I think I see the confusion - you're reading the page about configuring cross-cluster search with security. Naturally you need have a licence to use the security features in order to do this.
Cross-cluster search alone (without security) is included in the OSS distribution and documented in the reference manual here.
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