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ClickHouse incremental backup


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I recently switched from daily full backups in S3 for my ClickHouse server to incremental backups.

Daily backups are useful. But they take too much space. That’s bad. But most of your data doesn’t change every day, so you can store only the parts that change.

  1. Get a list of tables
  2. Freeze each table
  3. Copy the metadata folder into your frozen backup folder
  4. Use rsync to make an incremental backup using the --link-dest option.

Citation

If you find this work useful, please cite it as: 
@article{yaltirakli,
  title   = "ClickHouse incremental backup",
  author  = "Yaltirakli, Gokberk",
  journal = "gkbrk.com",
  year    = "2025",
  url     = "https://www.gkbrk.com/clickhouse-incremental-backup"
}
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IEEE Citation
Gokberk Yaltirakli, "ClickHouse incremental backup", June, 2025. [Online]. Available: https://www.gkbrk.com/clickhouse-incremental-backup. [Accessed Jun. 16, 2025].
APA Style
Yaltirakli, G. (2025, June 16). ClickHouse incremental backup. https://www.gkbrk.com/clickhouse-incremental-backup
Bluebook Style
Gokberk Yaltirakli, ClickHouse incremental backup, GKBRK.COM (Jun. 16, 2025), https://www.gkbrk.com/clickhouse-incremental-backup

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