1. 下载安装包

• 1.官网地址
• 2.mysql-8.0.35-1.el7.x86_64.rpm-bundle.tar
• 3.放到服务器的目录（这里是/opt/mysql）

2. 解压tar包

• 1.tar -xvf 可以解压tar.xz后缀的压缩文件
• 2.tar -zxvf 可以解压tar.gz后缀的压缩文件

1.进入目录
cd /opt/mysql
2.tar命令解压
sudo tar -xf mysql-8.0.35-1.el7.x86_64.rpm-bundle.tar

3. 安装

• 1.执行命令

sudo rpm -ivh mysql-community-common-8.0.35-1.el7.x86_64.rpm

• 2.执行命令

sudo rpm -ivh mysql-community-client-plugins-8.0.35-1.el7.x86_64.rpm

• 3.执行命令

sudo rpm -ivh mysql-community-libs-8.0.35-1.el7.x86_64.rpm

• 4. 遇到问题，卸载mariadb-libs

sudo yum remove mariadb-libs

• 5.执行命令

sudo rpm -ivh mysql-community-libs-compat-8.0.35-1.el7.x86_64.rpm

• 6.执行命令

sudo rpm -ivh mysql-community-devel-8.0.35-1.el7.x86_64.rpm

• 7.遇到问题mysql-community-devel 安装失败

sudo yum install openssl-devel -y

• 8.执行命令

sudo rpm -ivh mysql-community-client-8.0.35-1.el7.x86_64.rpm

• 9.执行命令

sudo rpm -ivh mysql-community-icu-data-files-8.0.35-1.el7.x86_64.rpm

• 10.执行命令

sudo rpm -ivh mysql-community-server-8.0.35-1.el7.x86_64.rpm

4. 查看安装完成后的安装包

• 1.执行命令

 sudo rpm -qa |grep mysql

• 2.结果示例
  

5. 初始化mysql

• 1.执行命令

mysqld --initialize --user=mysql

• 2.查看root的临时密码

grep "password" /var/log/mysqld.log

6. MySQL设置

• 1.执行命令启动服务

service mysqld start

• 2.使用临时密码登录

mysql -u root -p

• 3.修改临时密码

ALTER USER 'root'@'localhost' IDENTIFIED BY 'root'; 
FLUSH PRIVILEGES;
exit;

• 4.外部访问设置

CREATE USER 'root'@'%' IDENTIFIED BY 'root';
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%';
FLUSH PRIVILEGES;
exit;

• 5.认证方式修改

2059 -Authentication plugin 'caching sha2 password' cannot be loaded:

ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY 'root';