mac安装Kafka

执行命令brew install kafka，结果报了如下提示：

Updating Homebrew…
==> Auto-updated Homebrew!
Updated 1 tap (homebrew/core).
==> Updated Formulae
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kafka: Java 1.8 is required to install this formula.
Install AdoptOpenJDK 8 with Homebrew Cask:
brew cask install homebrew/cask-versions/adoptopenjdk8
Error: An unsatisfied requirement failed this build.

从提示中，可以看出是缺少java1.8的jdk。于是执行命令brew cask install homebrew/cask-versions/java8，安装Java1.8的jdk，安装过程如下所示

==> Tapping homebrew/cask-versions
Cloning into ‘/usr/local/Homebrew/Library/Taps/homebrew/homebrew-cask-versions’…
remote: Enumerating objects: 227, done.
remote: Counting objects: 100% (227/227), done.
remote: Compressing objects: 100% (216/216), done.
remote: Total 227 (delta 17), reused 49 (delta 10), pack-reused 0
Receiving objects: 100% (227/227), 91.82 KiB | 79.00 KiB/s, done.
Resolving deltas: 100% (17/17), done.
Tapped 207 casks (246 files, 349.5KB).
==> Caveats
This Cask makes minor modifications to the JRE to prevent issues with
packaged applications, as discussed here:

https://bugs.eclipse.org/bugs/show_bug.cgi?id=411361

If your Java application still asks for JRE installation, you might need
to reboot or logout/login.

Installing java8 means you have AGREED to the license at
https://www.oracle.com/technetwork/java/javase/terms/license/index.html

==> Satisfying dependencies
==> Downloading https://download.oracle.com/otn-pub/java/jdk/8u192-b12/750e1c8617c5452694857ad95c3ee230/jdk-8u192-macosx-x64.dmg
==> Downloading from https://download.oracle.com/otn-pub/java/jdk/8u192-b12/750e1c8617c5452694857ad95c3ee230/jdk-8u192-macosx-x64.dmg?AuthParam=1540643090_5c9af33a69f03fb1455c1720498fa1e5
######################################################################## 100.0%
==> Verifying SHA-256 checksum for Cask ‘java8’.
==> Installing Cask java8
==> Running installer for java8; your password may be necessary.
==> Package installers may write to any location; options such as --appdir are ignored.
Password:
installer: Package name is JDK 8 Update 192
installer: Installing at base path /
installer: The install was successful.
java8 was successfully installed!

在安装完1.8版本jdk之后，再次执行命令brew install kafka，安装过程如下所示：

==> Installing dependencies for kafka: zookeeper
==> Installing kafka dependency: zookeeper
==> Downloading https://homebrew.bintray.com/bottles/zookeeper-3.4.13.high_sierra.bottle.tar.gz
######################################################################## 100.0%
==> Pouring zookeeper-3.4.13.high_sierra.bottle.tar.gz
==> Caveats
To have launchd start zookeeper now and restart at login:
brew services start zookeeper
Or, if you don’t want/need a background service you can just run:
zkServer start
==> Summary
? /usr/local/Cellar/zookeeper/3.4.13: 244 files, 33.4MB
==> Installing kafka
==> Downloading https://homebrew.bintray.com/bottles/kafka-2.0.0.high_sierra.bottle.tar.gz
######################################################################## 100.0%
==> Pouring kafka-2.0.0.high_sierra.bottle.tar.gz
==> Caveats
To have launchd start kafka now and restart at login:
brew services start kafka
Or, if you don’t want/need a background service you can just run:
zookeeper-server-start /usr/local/etc/kafka/zookeeper.properties & kafka-server-start /usr/local/etc/kafka/server.properties
==> Summary
? /usr/local/Cellar/kafka/2.0.0: 160 files, 46.8MB
==> Caveats
==> zookeeper
To have launchd start zookeeper now and restart at login:
brew services start zookeeper
Or, if you don’t want/need a background service you can just run:
zkServer start
==> kafka
To have launchd start kafka now and restart at login:
brew services start kafka
Or, if you don’t want/need a background service you can just run:
zookeeper-server-start /usr/local/etc/kafka/zookeeper.properties & kafka-server-start /usr/local/etc/kafka/server.properties
至此，mac上安装kafka的过程结束。

运行kafka是需要依赖于zookeeper的，所以安装kafka的时候也会包含zookeeper。

kafka的安装目录：/usr/local/Cellar/kafka/2.0.0/bin
kafka的配置文件目录：/usr/local/Cellar/kafka/2.0.0/bin
kafka服务的配置文件：/usr/local/etc/kafka/server.properties
zookeeper配置文件： /usr/local/etc/kafka/zookeeper.properties

server.properties中的重要配置

broker.id=0
listeners=PLAINTEXT://:9092
advertised.listeners=PLAINTEXT://127.0.0.1:9092
log.dirs=/usr/local/var/lib/kafka-logs

zookeeper.properties中的重要配置

dataDir=/usr/local/var/lib/zookeeper
clientPort=2181
maxClientCnxns=0
使用以下命令，就可以启动zookeeper和Kafka：

1.在执行各命令前，先转到kafka的bin目录，

cd /usr/local/Cellar/kafka/2.0.0/bin
2.首先，启动zookeeper：

zookeeper-server-start /usr/local/etc/kafka/zookeeper.properties
3.然后，启动Kafka：

kafka-server-start /usr/local/etc/kafka/server.properties
4.接下来，让我们创建一个“使用单个分区”、“只有一个副本”、名为“test”的主题的topic，

kafka-topics --create --zookeeper localhost:2181 --replication-factor 1 --partitions 1 --topic test
5.查看创建的topic，运行list topic命令：

kafka-topics --list --zookeeper localhost:2181
6.生产消息：

在命令行启动一个Kafka生产者，从文件或标准输入接收输入，并将其作为消息发送到Kafka集群。默认情况下，每行都将作为单独的消息发送。

kafka-console-producer --broker-list localhost:9092 --topic test
7.消费消息：

在命令行启动一个Kafka消费者，将消息转储到标准输出。

kafka-console-consumer --bootstrap-server localhost:9092 --topic test --from-beginning
8.如果想删除topic，可以使用如下命令：

kafka-topics --delete --zookeeper localhost:2181 --topic