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Alibaba Cloud RDS MySQL to ClickHouse Sync | NineData

Use this workflow when Alibaba Cloud RDS MySQL data needs to land in ClickHouse for reporting or analytics. NineData Data Replication can keep the analytical target aligned while the source database continues to serve applications.

Overview​

RDS MySQL is a transactional source. ClickHouse is an analytical target. Use NineData when you want to keep both sides in sync without building a custom ETL pipeline.

When to use this workflow​

Use this workflow when you need to:

  • Move operational data from RDS MySQL into ClickHouse for analytics.
  • Keep reporting workloads away from the source database.
  • Keep the target updated after the initial load.
  • Check synchronization results before downstream teams use the data.

How NineData helps​

  • Add the RDS MySQL source and ClickHouse target as data sources.
  • Use field mapping and transformation when the schemas do not match exactly.
  • Run full migration and incremental synchronization in one task.
  • Monitor task status, comparison results, and alerts from the task page.

Before you begin​

  • Make sure you can access the NineData console.
  • Prepare the connection information and permissions for the RDS MySQL source and ClickHouse target.
  • Confirm that NineData can reach both systems through the network path you plan to use.
  • Decide how the source tables should map to the target tables.

Procedure​

  1. Add the RDS MySQL data source to NineData.
  2. Add the ClickHouse data source to NineData.
  3. Create a replication task for RDS MySQL and ClickHouse, configure the required objects and mapping, run the precheck, and start the task.

Result​

After the task starts, ClickHouse keeps receiving new RDS MySQL changes according to the selected replication scope. Use data comparison and alerts to monitor the sync during steady state.