MySQL 配置

Linux(Ubuntu)

root@ubuntu-virtual-machine:~# mysql_secure_installation

Securing the MySQL server deployment.

Connecting to MySQL using a blank password.

VALIDATE PASSWORD PLUGIN can be used to test passwords
and improve security. It checks the strength of password
and allows the users to set only those passwords which are
secure enough. Would you like to setup VALIDATE PASSWORD plugin?    # 要安装验证密码插件吗?

Press y|Y for Yes, any other key for No: N    # 这里我选择N
Please set the password for root here.

New password:   # 输入要为root管理员设置的数据库密码

Re-enter new password:   # 再次输入密码


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     # 删除匿名账户
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) : N    # 禁止root管理员从远程登录，这里我没有禁止

... skipping.
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   # 删除test数据库并取消对它的访问权限
- 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   # 刷新授权表，让初始化后的设定立即生效
Success.

All done!

如果这样还是不行，没有效果

先进Mysql

mysql -uroot
>use mysql;
>select * from user where User='root';
//这里肯定会显示一大堆东西，其实是因为表横向太长，显示不全的原因
+---------------------------------+-------------------------------------------------------------------------------+
| plugin                          | authentication_string                                                         |
+---------------------------------+-------------------------------------------------------------------------------+
| mysql_native_password           | *84AAC12F54AB666ECFC2A83C676908C8BBC381B1                                     |
+---------------------------------+-------------------------------------------------------------------------------+
把这两个地方改成这样就行了
>update user set plugin='mysql_native_password',authentication_string='*84AAC12F54AB666ECFC2A83C676908C8BBC381B1' where User='root';

这样你的root用户密码，就改成了12345678
可以尽情的学数据库了。