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ClickHouse to ClickHouse: A Cleaner Way to Replicate Across Clusters

ClickHouse is often used for analytics platforms, reporting layers, and query acceleration. But when teams need to move data across clusters or initialize new environments, the real problem is not just exporting data. It is coordinating structures, permissions, object conflicts, and bulk loading in a repeatable way.

According to the latest NineData replication matrix, ClickHouse -> ClickHouse supports schema replication, full replication, and data comparison.

Best-fit scenarios​

  • ClickHouse cluster migration or environment refresh.
  • Initializing test, acceptance, or disaster recovery clusters.
  • Preparing a new cluster before switching analytical workloads.

What NineData provides​

  • Schema replication to initialize structures automatically.
  • Full replication for historical data loading.
  • Data comparison to help validate the result after migration.
  • Unified prechecks for permissions, conflicts, and existing target data.

Current boundary​

  • The current public capability focuses on schema replication and full replication.
  • Both source and target are recommended to run ClickHouse 20.3 or later.
  • The source needs privileges such as SELECT, SHOW, DESCRIBE, and EXISTS.

Learn more​