Can't connect to local MySQL server through socket '/tmp/mysql.sock'

相关提示：

1. The server quit without updating PID file
2. Can’t connect to local MySQL server through socket ‘/tmp/mysql.sock’
3. 在‘系统偏好设置’里无法启动MySQL

解决方法：

1. sudo rm /usr/local/mysql

2. sudo rm -rf /usr/local/mysql*

3 sudo rm -rf /Library/StartupItems/MySQLCOM （可选）

4 sudo rm -rf /Library/PreferencePanes/My* （可选）

5 vim /etc/hostconfig (and removed the line MYSQLCOM=-YES-) （ 可选）

6 rm -rf ~/Library/PreferencePanes/My*

7 sudo rm -rf /Library/Receipts/mysql*

8 sudo rm -rf /Library/Receipts/MySQL*

9 sudo rm -rf /var/db/receipts/com.mysql.*

再重新安装 MySQL, 顺利启动。