【MySQL】目录、文件权限问题

详情如下：

$ cat /usr/local/mysql/data/Phoenix-slow.log
cat: /usr/local/mysql/data/Phoenix-slow.log: Permission denied

解决方法：修改权限

$ sudo chown -R _mysql:staff /usr/local/mysql/data

参考：https://stackoverflow.com/questions/36621026/mysql-not-launching-data-user-local-err-permission-denied