1、去官网选一款适合的yum源

官网链接：https://dev.mysql.com/downloads/repo/yum/ yum方式安装MySQL 8.0 - 图1

2、安装MySQL 8.0的yum源

  1. yum install -y https://repo.mysql.com//mysql80-community-release-el8-9.noarch.rpm

如果报如下错误则需要重新设置镜像仓库： ● Status code: 404 for http://mirrors.cloud.aliyuncs.com/centos/8/BaseOS/x86_64/os/repodata/repomd.xml (IP: 100.100.2.148) 错误：为仓库 ‘base’ 下载元数据失败 : Cannot download repomd.xml: Cannot download repodata/repomd.xml: All mirrors were tried

此处设置腾讯镜像，官网帮助文档 ：https://mirrors.tencent.com/help/centos.html

2.1 备份系统旧的配置文件，注：文件名可能不同

  1. mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup

2.2 获取对应版本的CentOS-Base.repo 到/etc/yum.repos.d/目录

  1. wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.cloud.tencent.com/repo/centos8_base.repo

2.3 更新缓存

  1. yum clean all 
  2. yum makecache

3、安装MySQL 8.0

yum install mysql-community-server -y

4、启动mysql，并设置开机自启动

systemctl start mysqld systemctl enable mysqld

5、查看临时密码

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

6、根据临时密码登录后修改密码

  1. ALTER USER 'root'@'localhost' IDENTIFIED BY 'xxxx';

7、开放3306端口

8、配置远程访问权限

  1. CREATE USER 'root'@'%' IDENTIFIED BY 'PASSWORD';
  2. GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' WITH GRANT OPTION;
  3. FLUSH PRIVILEGES;