What are the different modes of ZooKeeper clustering?

There are several main types of ZooKeeper cluster configurations.

1. Standalone mode: only one ZooKeeper node, suitable for development and testing environments.
2. Centralized mode: Multiple ZooKeeper nodes share a common data storage, with only one node active at a time. The other nodes serve as standby nodes, ready to take over operations if the active node fails.
3. Distributed mode: Multiple ZooKeeper nodes are distributed across different physical servers, synchronizing and collaborating with each other to improve availability and fault tolerance.
4. Multi-master mode: All ZooKeeper nodes are active and share the same data, any node can handle client requests, but data consistency and synchronization need to be ensured.
5. Arbitration mode: Introducing one or more arbitration nodes to coordinate data synchronization and decision-making among multiple ZooKeeper nodes, enhancing the reliability and stability of the system.