IMPORTANT: Version 7.4 of Elasticsearch has passed its maintenance date.
This documentation is no longer being updated. For the latest information, see the current release documentation.
The cross-cluster replication (CCR) feature enables replication of indices in remote clusters to a local cluster. This functionality can be used in some common production use cases:
- Disaster recovery in case a primary cluster fails. A secondary cluster can serve as a hot backup
- Geo-proximity so that reads can be served locally
This guide provides an overview of cross-cluster replication: