Tool for synchronizing clickhouse clusters

  • works only with partitioned MergeTree tables
  • can sync clusters with different node number
  • uses info from system.clusters to determine nodes
  • creates tables on destination cluster
  • recreates tables if schema differ
  • checks record number in each partition each run, and refill if numbers differ (sync)
  • can work in two modes: (a) suck data in and put it to destination cluster (very slow) and (b) direct, using insert … select from remote()
  • can copy only recently created partitions


adopt clicksync.yaml as you need, then run clicksync.yaml


View Github