前言：

因为用mac开发，很多工具不是很熟练，这里做个笔记，以防以后再次入坑！！！

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用Homebrew进行安装

最近发现mac上一个神奇工具 Homebrew(包缺失管理)，就像maven管理jar包的依赖一样，Homebrew帮忙管理各种工具，真是太方便。Homebrew的常用指令。

安装mysql

brew install mysql

启动mysql

mysql.server start

设置密码：

mysql_secure_installation

运行mysql_secure_installation会执行几个设置：

a)为root用户设置密码

b)删除匿名账号

c)取消root用户远程登录

d)删除test库和对test库的访问权限

e)刷新授权表使修改生效

feideMacBook-Air:~ fei$ brew install mysql@5.7
Updating Homebrew...
==> Downloading https://homebrew.bintray.com/bottles/mysql@5.7-5.7.23.high_sierra.
Already downloaded: /Users/fei/Library/Caches/Homebrew/mysql@5.7-5.7.23.high_sierra.bottle.tar.gz
==> Pouring mysql@5.7-5.7.23.high_sierra.bottle.tar.gz
==> /usr/local/Cellar/mysql@5.7/5.7.23/bin/mysqld --initialize-insecure --user=fei
==> Caveats
We've installed your MySQL database without a root password. To secure it run:
    mysql_secure_installation

MySQL is configured to only allow connections from localhost by default

To connect run:
    mysql -uroot

This formula is keg-only, which means it was not symlinked into /usr/local,
because this is an alternate version of another formula.

If you need to have this software first in your PATH run:
  echo 'export PATH="/usr/local/opt/mysql@5.7/bin:$PATH"' >> ~/.bash_profile

For compilers to find this software you may need to set:
    LDFLAGS:  -L/usr/local/opt/mysql@5.7/lib
    CPPFLAGS: -I/usr/local/opt/mysql@5.7/include

To have launchd start mysql@5.7 now and restart at login:
  brew services start mysql@5.7
Or, if you don't want/need a background service you can just run:
  /usr/local/opt/mysql@5.7/bin/mysql.server start
==> Summary
🍺  /usr/local/Cellar/mysql@5.7/5.7.23: 317 files, 234.4MB

看看输出的提示，剩下的该怎么操作其实brew提示的很清楚了！！！

登陆mysql：mysql -u root -p
启动mysql：brew services start mysql
停止mysql：brew services stop mysql