一、下载安装包

下载安装包
https://kafka.apache.org/downloads

选择 2.5.0 版本， 2.5.0 包括以下内容：
Kafka 2.5.0 includes a number of significant new features. Here is a summary of some notable changes:
TLS 1.3 support (1.2 is now the default)
Co-groups for Kafka Streams
Incremental rebalance for Kafka Consumer
New metrics for better operational insight
Upgrade Zookeeper to 3.5.7
Deprecate support for Scala 2.11