Binlog 无法读取导致无法启动，错误日志：Failed to open log (file './mysql-bin.000001', errno 13) 2017-04-05 mysql error
MySQL 配置文件 my.cnf 权限问题导致无法启动，错误提示：World-writable config file '/etc/my.cnf' is ignored 2017-04-05 mysql error
