Confluent PlatformApache KafkaApache ZooKeeper

Active controller count deviation from one disrupts cluster operations

critical
availabilityUpdated Mar 10, 2025(via Exa)
How to detect:

Active controller count is not exactly one, preventing proper execution of administrative tasks like partition assignments and leader elections

Recommended action:

Ensure active controller count remains at exactly one at all times. If zero or multiple controllers are active, investigate controller election process and ZooKeeper connectivity