[root@youxi1 ~]# mysql_secure_installation

Securing the MySQL server deployment.

Enter password for user root: 　　//输入root密码

The 'validate_password' plugin is installed on the server.

The subsequent steps will run with the existing configuration

of the plugin.

Using existing password for root.

Estimated strength of the password: 25

Change the password for root ? ((Press y|Y for Yes, any other key for No) : No　　//是否更改root密码，如果输入y会要求设置新的密码

... skipping.

By default, a MySQL installation has an anonymous user,

allowing anyone to log into MySQL without having to have

a user account created for them. This is intended only for

testing, and to make the installation go a bit smoother.

You should remove them before moving into a production

environment.

Remove anonymous users? (Press y|Y for Yes, any other key for No) : y　　//是否删除匿名用户，建议y删除

Success.

Normally, root should only be allowed to connect from

'localhost'. This ensures that someone cannot guess at

the root password from the network.

Disallow root login remotely? (Press y|Y for Yes, any other key for No) : y　　//是否禁止root远程登录，建议y禁止

Success.

By default, MySQL comes with a database named 'test' that

anyone can access. This is also intended only for testing,

and should be removed before moving into a production

environment.

Remove test database and access to it? (Press y|Y for Yes, any other key for No) : y　　//是否删除test数据库，y删除

- Dropping test database...

Success.

- Removing privileges on test database...

Success.

Reloading the privilege tables will ensure that all changes

made so far will take effect immediately.

Reload privilege tables now? (Press y|Y for Yes, any other key for No) : y　　//是否重新加载权限表，y重新加载

Success.

All done!