kafka_2.11 简单使用_missing required argument "[partitions]" option de-优快云博客

本文链接：https://blog.youkuaiyun.com/M_SIGNALs/article/details/53206207

本文介绍了如何在Kafka 2.11中创建topic、producer、consumer，并通过API进行操作。首先，使用kafka.topics.sh脚本创建topic。接着，通过命令行创建producer和consumer，理解其工作原理。最后，通过Maven项目引入Kafka依赖，并展示了简单的producer和consumer的API使用示例。

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进过上一篇的引导，相信大家应该都已经安装好了。这次我们就来简单使用一下。

1 创建 topic

像官网上写的那样，我们可以使用 kafka.topics.sh 脚本来创建一个 topic 。不过，前提是我们需要启动zookeeper 和 kafka 服务。
这里写图片描述

那我们就用官网上例子好了：

[root@master config]# kafka-topics.sh --create --zookeeper localhost:2181 --topic first                                      

Missing required argument "[partitions]"

Option                                   Description                            
------                                   -----------                            
--alter                                  Alter the number of partitions,        
                                           replica assignment, and/or           
                                           configuration for the topic.         
--config <name=value>                    A topic configuration override for the 
                                           topic being created or altered.The   
                                           following is a list of valid         
                                           configurations:                      
                                                cleanup.policy                        
                                                compression.type                      
                                                delete.retention.ms                   
                                                file.delete.delay.ms                  
                                                flush.messages                        
                                                flush.ms                              
                                                follower.replication.throttled.       
                                           replicas                             
                                                index.interval.bytes                  
                                                leader.replication.throttled.replicas 
                                                max.message.bytes                     
                                                message.format.version                
                                                message.timestamp.difference.max.ms   
                                                message.timestamp.type                
                                                min.cleanable.dirty.ratio             
                                                min.compaction.lag.ms                 
                                                min.insync.replicas                   
                                                preallocate                           
                                                retention.bytes                       
                                                retention.ms                          
                                                segment.bytes                         
                                                segment.index.bytes                   
                                                segment.jitter.ms                     
                                                segment.ms                            
                                                unclean.leader.election.enable        
                                         See the Kafka documentation for full   
                                           details on the topic configs.        
--create                                 Create a new topic.                    
--delete                                 Delete a topic                         
--delete-config <name>                   A topic configuration override to be   
                                           removed for an existing topic (see   
                                           the list of configurations under the 
                                           --config option).                    
--describe                               List details for the given topics.     
--disable-rack-aware                     Disable rack aware replica assignment  
--force                                  Suppress console prompts               
--help                                   Print usage information.               
--if-exists                              if set when altering or deleting       
                                           topics, the action will only execute 
                                           if the topic exists                  
--if-not-exists                          if set when creating topics, the       
                                           action will only execute if the      
                                           topic does not already exist         
--list                                   List all available topics.             
--partitions <Integer: # of partitions>  The number of partitions for the topic 
                                           being created or altered (WARNING:   
                                           If partitions are increased for a    
                                           topic that has a key, the partition  
                                           logic or ordering of the messages    
                                           will be affected                     
--replica-assignment                     A list of manual partition-to-broker   
  <broker_id_for_part1_replica1