clickhouse_ddl_export

Usage

usage: clickhouse_ddl_export [-h] [--export | --print-statements] [dumpfile]

Exports clickhouse DDL, useful when adding replicas in a cluster

positional arguments:
  dumpfile

options:
  -h, --help          show this help message and exit
  --export
  --print-statements

Examples

Export tables from source node

clickhouse_ddl_export.py --export /tmp/source_db_tables.json
clickhouse_ddl_export.py --print-statements /tmp/source_db_tables.json > /tmp/ddl.sql

In destination node

clickhouse client --multiquery < /tmp/ddl.sql

Then replication is applied, and data is fetched from source node(s)

Have fun!

License

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