二十：CDH5.14离线安装kafka (含版本选择)

一：当安装好CDH的hadoop后，准备安装kafka,可是CDH上添加服务是这样的，没法直接添加，需要添加相应包才可以： Apache Kafka is publish-subscribe messaging rethought as a distributed commit log. Before adding this service, ensure that either the Kafk

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