January 2018
Beginner to intermediate
234 pages
7h 8m
Chinese
Content preview from Kafka权威指南
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管理
Kafka
｜
145
9.3.2
覆盖客户端的默认配置
对于
Kafka
客户端来说，只能覆盖生产者配额和消费者配额参数。这两个配额都以字节每
秒为单位，表示客户端在每个
broker
上的生产速率或消费速率。也就是说，如果集群里有
5
个
broker
，生产者的配额是
10MB/s
，那么它可以以
10MB/s
的速率在单个
broker
上生成
数据，总共的速率可以达到
50MB/s
。
客户端
ID
与消费者群组
客户端
ID
可以与消费者群组的名字不一样。消费者可以有自己的
ID
，因此
不同群组里的消费者可能具有相同的
ID
。在为消费者客户端设置
ID
时，最
好使用能够表明它们所属群组的标识符，这样便于群组共享配额，从日志里
查找负责请求的群组也更容易一些。
更改客户端配置的命令格式如下：
kafka-configs.sh --zookeeper zoo1.example.com:2181/kafka-cluster
--alter -- entity-type clients --entity-name <client ID>
--add-config <key>=<value>[,<key>=<value>...]
可用的客户端配置参数（键）如表
9-3
所示。
表9-3：可用的客户端配置参数
配置项 描述
producer_bytes_rate
单个生产者每秒钟可以往单个
broker
上生成的消息字节数
consumer_bytes_rate
单个消费者每秒钟可以从单个
broker
读取的消息字节数
9.3.3
列出被覆盖的配置
使用命令行工具可以列出所有被覆盖的配置，从而用于检查主题或客户端的配置。与其他 ...
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