sudo /usr/local/mysql/support-files/mysql.server stop // 停止
sudo /usr/local/mysql/support-files/mysql.server start // 启动
sudo /usr/local/mysql/support-files/mysql.server restart // 重启
重启MySQL提示MySQL server PID file could not be found!
Starting MySQL...The server quit without updating PID file (/usr/local/mysql/data/rekfan.pid).
1.可能是/usr/local/mysql/data/rekfan.pid文件没有写的权限
解决方法 ：给予权限，执行
chown -R mysql:mysql /usr/local/mysql/data
chmod -R 755 /usr/local/mysql/data
然后重新启动mysqld！
转自---
作者：Jack问
链接：https://www.jianshu.com/p/51551802a1ee
来源：简书
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