方式一：官网下载安装
安装mysql
mysql官网下载：https://dev.mysql.com/downloads/mysql/
系统偏好设置 会出现mysql的图标
删除mysql
sudo rm /usr/local/mysql sudo rm -rf /usr/local/var/mysql sudo rm -rf /usr/local/mysql* sudo rm -rf /Library/StartupItems/MySQLCOM sudo rm -rf /Library/PreferencePanes/My* # 有就删除，没有就算 sudo vim /etc/hostconfig (removed the line MYSQLCOM=-YES-) rm -rf ~/Library/PreferencePanes/My* sudo rm -rf /Library/Receipts/mysql* sudo rm -rf /Library/Receipts/MySQL* sudo rm -rf /var/db/receipts/com.mysql.*
方式二：homebrew 安装 mysql
安装homebrew
brew官网: https://brew.sh/index_zh-cn
方式一：
安装homebrew：
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"卸载homebrew：
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/uninstall)" 方式二：
如果安装失败,报错：permission denied
1、可以先下载
git下载：
git clone https://github.com/Homebrew/brew或者github下载：https://github.com/Homebrew/brew
2、移动项目文件
cd brew # 进入刚下载的文件目录 sudo mv bin/brew /usr/local/bin sudo mv Library /usr/local sudo mv share /usr/local brew # 检查成功
安装卸载mysql
安装
brew install mysql启动mysql
mysql.server start进入
mysql -uroot修改mysql密码
mysql> set password for root@localhost = password('newpassword'); 卸载
brew uninstall mysql 或者 brew remove mysql参考：