操作系统:CentOS 7
MySQL:5.6
MySQL的卸载
查看MySQL软件
![](https://img2018.cnblogs.com/i-beta/1260012/201912/1260012-20191207193934783-2115579353.png)
卸载MySQL
![](https://img2018.cnblogs.com/i-beta/1260012/201912/1260012-20191207193926817-374766588.png)
查看是否还有 MySQL 软件,有的话继续删除。
安装MySQL
![](https://img2018.cnblogs.com/i-beta/1260012/201912/1260012-20191207194011654-1644211906.png)
启动MySQL
![](https://img2018.cnblogs.com/i-beta/1260012/201912/1260012-20191207194055197-546433504.png)
设置root用户密码
例如:为 root 账号设置密码为 root :
![](https://img2018.cnblogs.com/i-beta/1260012/201912/1260012-20191207194108606-1164906599.png)
登录MySQL
登录命令
![](https://img2018.cnblogs.com/i-beta/1260012/201912/1260012-20191207194221550-965118361.png)
命令说明:
![](https://img2018.cnblogs.com/i-beta/1260012/201912/1260012-20191207194231947-269547448.png)
配置MySQL
![](https://img2018.cnblogs.com/i-beta/1260012/201912/1260012-20191207194357290-1865834771.png)
修改内容如下:
![](https://img2018.cnblogs.com/i-beta/1260012/201912/1260012-20191207194417406-1839038624.png)
MySQL远程连接授权
授权命令
![](https://img2018.cnblogs.com/i-beta/1260012/201912/1260012-20191207194451923-1639568662.png)
示例
授予root用户对所有数据库对象的全部操作权限:
![](https://img2018.cnblogs.com/i-beta/1260012/201912/1260012-20191207194513642-1764865818.png)
命令说明:
关闭linux的防火墙
![](https://img2018.cnblogs.com/i-beta/1260012/201912/1260012-20191207194611983-438899911.png)
客户端远程访问
![](https://img2018.cnblogs.com/i-beta/1260012/201912/1260012-20191207194631434-72357395.png)