這個是我最新并且一直推崇的方法：
1、安裝：sunyichaodeMacBook-Pro:~ sunyichao$ brew install mysql
2、開啟mysql：mysql.server start
2、使用mysql的配置腳本：/usr/local/opt/mysql/bin/mysql_secure_installation //mysql 提供的配置向導
啟動這個腳本后，即可根據如下命令提示進行初始化設置

sunyichaodeMacBook-Pro:~ sunyichao$ /usr/local/opt/mysql/bin/mysql_secure_installation   //mysql 提供的配置向導

Securing the MySQL server deployment.

Connecting to MySQL using a blank password.

VALIDATE PASSWORD PLUGIN can be used to test passwordsand 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?

Press y|Y for Yes, any other key for No: k //是否采用mysql密碼安全檢測插件（這里作為演示選擇否，密碼檢查插件要求密碼復雜程度高，大小寫字母+數字+字符等）

Please set the password for root here. // 首次使用自帶配置腳本，設置root密碼

New password:

Re-enter new password:

By default, a MySQL installation has an anonymous user, allowing anyone to log into MySQL without having to have a user account created for 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? [Y/n] Y //是否刪除匿名用戶

 ... 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? [Y/n] Y //是否禁止遠程登錄

 ... 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? [Y/n] Y //刪除測試數據庫，并登錄

 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? [Y/n] Y//重新載入權限表

 ... Success!

All done!  If you've completed all of the above steps, your MySQL

installation should now be secure.

Thanks for using MySQL!

Cleaning up...

sunyichaodeMacBook-Pro:~ sunyichao$