1下載安裝包：https://dev.mysql.com/downloads/mysql/8.0.html

2、解壓安裝包後可以看下如下文件列表

3、在當前目錄打開終端

查看並卸載 mariadb
rpm -qa | grep mariadb
sudo rpm -e --nodeps mariadb-libs-5.5.60-1.el7_5.x86_64

安裝mysql ，也可以server和client 任選其一
sudo yum install mysql-community-{server,client,common,libs}-*

啟動服務
sudo service mysqld start

查看服務狀態
sudo service mysqld status

查看默認密碼
sudo grep ‘temporary password‘ /var/log/mysqld.log

連接後，修改密碼SQL語句：
ALTER USER ‘root‘@‘localhost‘ IDENTIFIED BY ‘MyNewPass‘;

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centos7 mysql8.0 RPM軟件包方式安裝