centos7安装MySQL8.0

安装MySQL8.0的步骤如下：

1. 添加MySQL Yum Repository

   $ sudo rpm -Uvh https://dev.mysql.com/get/mysql80-community-release-el7-3.noarch.rpm

2. 安装MySQL Server

   $ sudo yum install mysql-community-server

3. 启动MySQL服务

   $ sudo systemctl start mysqld

4. 查看MySQL服务状态

   $ sudo systemctl status mysqld

5. 设置MySQL开机自启

   $ sudo systemctl enable mysqld

6. 获取初始密码

   $ sudo grep 'temporary password' /var/log/mysqld.log

7. 登录MySQL并修改密码

   $ mysql -u root -p
   mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'new_password';