centos7安装mysql8

1、检查系统是否有安装mysql或mariadb，如果有则删除

2、yum localinstall https://repo.mysql.com//mysql80-community-release-el7-1.noarch.rpm

3、yum install mysql-community-server

4、开启mysql服务service mysqld start

5、查看root密码cat /var/log/mysqld.log

6、需要修改默认root密码，不然什么都干不了。ALTER user 'root'@'localhost' IDENTIFIED BY '1qaz@WSX';  flush privileges;