mac安装Kafka

由于工作需要，想研究下kafka。于是在自己的mac上安装Kafka，直接执行命令brew install kafka，结果报了如下提示：

Updating Homebrew...
==> Auto-updated Homebrew!
Updated 2 taps (homebrew/core and homebrew/cask).
==> New Formulae
um
==> Updated Formulae
zsh-completions ✔   bmake               diffoscope          eslint              gandi.cli           json-fortran        meson               opam                safe                wabt
abyss               brotli              dlib                feh                 [email protected]               libgcrypt           mkvtoolnix          parallel            skaffold            webpack
angular-cli         c-ares              doitlive            flake8              getdns              libopendkim         monero              pgformatter         stubby              xmake
ansible             checkbashisms       duplicity           flyway              gpa                 librsvg             nifi                php-cs-fixer        tbb                 z3
aspectj             collectd            ejabberd            fonttools           homebank            lynis               nnn                 plantuml            ucloud              zookeeper
autopep8            ddgr                elixir              futhark             idris               mdcat               nss                 rust                unbound

kafka: Java 1.8 is required to install this formula.
JavaRequirement unsatisfied!
You can install with Homebrew Cask:
 brew cask install homebrew/cask-versions/java8
You can download from:
 https://www.oracle.com/technetwork/java/javase/downloads/index.html
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。