mysqld.log错误日志如下：

2018-10-15 19:38:17 4341 [ERROR] /usr/local/mysql/bin/mysqld: Incorrect information in file: './performance_schema/accounts.frm'
2018-10-15 19:38:17 4341 [ERROR] /usr/local/mysql/bin/mysqld: Incorrect information in file: './performance_schema/cond_instances.frm'

performance_schema 修复_第1张图片

修复方法为： /usr/local/mysql/bin/mysql_upgrade -h127.0.0.1 -uroot -p'111111'

performance_schema 修复_第2张图片

performance_schema 修复_第3张图片

修复后记得重启下数据库
/etc/init.d/mysqld restart

然后再去查看日志里是否出现performance_schema 报错