MySQL5.7报错

mysql 配置文件目录：/etc/my.cnfroot 密码为空的时候配置文件中下面这句：执行这句时候错误：这个时候我们只需要flush privileges
一下，在添加用户就OK了，mysql> flush privileges;
Query OK, 0 rows affected (0.01 sec)mysql> GRANT ALL PRIVILEGES ON . TO IDENTIFIED BY ‘123’ WITH GRANT OPTION;
Query OK, 0 rows affected (0.00 sec)这个时候我们成功搞定了，再登录就可以了。如果报错如下信息：Error: Cannot retrieve repository metadata (repomd.xml) for repository: InstallMedia. Please verify its path and try again
You could try using –skip-broken to work around the problem
You could try running: rpm -Va –nofiles –nodigest我们只要到/etc/yum.repo.开发云主机域名s下面把packetxxxx.repo和redhat.repo两个文件删除掉，再启动就可以了，