Under the mac install mysql8.0

There are two installation ways, one is the installation package, official website to download the installation package, MySQL download ;

Here record brew Installation:

　　1.brew uninstall mysql uninstall the original;

　　2.brew install mysql

　　3. You can view the mysql related by brew info mysql, there are two start-up mode, mysql.service start / brew services start mysql;

　　4.mysql -uroot entering and modifying passwords, ALTER USER 'root' @ '%' IDENTIFIED WITH mysql_native_password BY 'root'; (after introducing mysq_sercuity 5.7)

　　5. because the password is too short, you can view and modify the password validation rules:

　　show variables like 'validate_password%';
　　set global validate_password.length = 1;

(There are differences between the parameter name mysql versions, such as 5.7, compared with validate_password_length)

　　set global validate_password.policy=LOW;
　　

　　Rules Reference