sudo rm /usr/local/mysql
sudo rm -rf /usr/local/mysql*
sudo rm -rf /Library/StartupItems/MySQLCOM
cd /Library/PreferencePanes/
rm -rf MySQL.prefPane
sudo rm -rf MySQL.prefPane
sudo rm -rf /Library/Receipts/mysql*
sudo rm -rf /Library/Receipts/MySQL*
sudo rm -rf /var/db/receipts/com.mysql.*
cd /usr/local/Cellar
ls |grep mysql
cd /usr/local/var
rm -rf mysql
sudo rm -rf mysql
cd /tmp
ls
5558 rm -rf mysql.sock
5559 sudo rm -rf mysql.sock
5560 sudo rm -rf mysql.sock.lock
5561 ls
5562 sudo rm -rf mysqlx.sock
5563 ls
5564 sudo rm -rf mysqlx.sock.lock
5565 clar
5566 clear
5567 ls
5568 ll
5569 cd /usr/local/
5570 ls
5571 brew cleanup
5572 brew install mysql@8.0
5573 mysql.server start
5574 lsof -i:3306
5575 lsof -i:8080
5576 lsof -i:500
5577 mysql -u root
5578 sudo mysql.server start
5579 sudo chown -R _mysql /usr/local/var/mysql
5580 sudo mysql.server restart
出现 ... ERROR! The server quit without updating PID file (/usr/local/var/mysql/localhost.pid). 解决方案
sudo chown -R _mysql /usr/local/var/mysql
sudo mysql.server restart