安装

brew install mysql@5.7  # 安装
brew link --force mysql@5.7 # 将mysql 5.7 版本设置为默认版本
brew services start mysql@5.7 # 启动服务，并将mysql 设置为开机自启服务
brew services list # 查看 mysql 是否成为开机自启服务

brew services stop mysql@5.7 # 停止
brew services restart mysql@5.7 # 重启

• 说明

  The brew services start mysql@5.7 - instruction is equal to :

$ ln -sfv /usr/local/opt/mysql/*.plist ~/Library/LaunchAgents
$ launchctl load ~/Library/LaunchAgents/homebrew.mxcl.mysql.plist

设置密码

启动之后，输入下面命令设置密码

mysql_secure_installation

5.7.x对设置的密码有严格的要求，分为LOW、MEDIUM、STRONG三个等级，对应要求如下：

LOW    Length >= 8
MEDIUM Length >= 8, numeric, mixed case, and special characters
STRONG Length >= 8, numeric, mixed case, special characters and dictionary file

选low即可，输入8位，我这里使用pwd4root ，其他一路y确认即可。

启动

$ brew services start mysql@5.7
==> Successfully stopped `mysql@5.7` (label: homebrew.mxcl.mysql@5.7)

登录

$ mysql -u root -p 
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 20
Server version: 8.0.15 Homebrew