本地部署MySQL5.7（Linux）

步骤一：安装MySQL

（1）更新YUM源

# rpm -Uvh http://dev.mysql.com/get/mysql57-community-  release-el7-9.noarch.rpm

（2）安装MySQL

# yum -y install mysql-community-server

（3）查看MySQL版本号

# mysql -V

步骤二： 配置MySQL

(1) 启动并开机自启动MySQL

# systemctl start myslqd

# systemctl enable mysqld

(2)获取root用户的初始随机密码

# grep 'temporary password' /var/log/mysqld.log

（3）对MySQL进行安全性配置

# mysql_secure_installation

- 重置root用户的密码

Enter password for user root: #输入上一步获取的root用户初始密码

Change the password for root ? ((Press y|Y for Yes, any other key for No) : Y #是否更改root用户密码，输入Y

New password: #输入新密码，长度为8至30个字符，必须同时包含大小写英文字母、数字和特殊符号。特殊符号可以是()` ~!@#$%^&*-+=|{}[]:;‘<>,.?/

Re-enter new password: #再次输入新密码

Estimated strength of the password: 100 Do you wish to continue with the password provided?(Press y|Y for Yes, any other key for No) : Y

- 输入Y删除匿名用户账号

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，输入YSuccess.

- 输入Y禁止root账号远程登录

Disallow root login remotely? (Press y|Y for Yes, any other key for No) : Y #禁止root远程登录，输入YSuccess.

- 输入Y删除test库以及对test库的访问权限

Remove test database and access to it? (Press y|Y for Yes, any other key for No) : Y #是否删除test库和对它的访问权限，输入Y- Dropping test database...Success.

- 输入Y重新加载授权表

Reload privilege tables now? (Press y|Y for Yes, any other key for No) : Y #是否重新加载授权表，输入YSuccess.All done!