In the development work, consumption in the Kafka cluster message, data change is our concern, when the premise of business is not complicated, we can use the Kafka command to provide tools with Zookeeper client tools, you can easily finish our work. With the complexity of the business, increase Group and Topic, then we use Kafka to provide command tools, already felt powerless, then the Kafka monitoring system at the moment is particularly important, we need to observe the details of consumer applications.