v.22.1New Feature

Automatic Cluster Discovery with ZooKeeper for Replica Management

Official CH changelog text
Automatic cluster discovery via Zoo/Keeper. It allows to add replicas to the cluster without changing configuration on every server. #31442 (vdimir).
Automatic cluster discovery via Zoo/Keeper, enabling dynamic addition of replicas without manual configuration updates on each server.

Why it matters

This feature solves the problem of having to manually update the cluster configuration on every ClickHouse server when adding new replicas. It improves cluster scalability and manageability by automatically detecting and integrating new replicas through ZooKeeper.

How to use it

Configure your ClickHouse cluster to use ZooKeeper for cluster coordination. Replicas registered in ZooKeeper will be automatically discovered and added to the cluster without requiring manual configuration changes on individual servers.

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