centos7安装mysql5.7

1.使用weget下载

yum -y install wget：下载wget 如果报错先试一下本机带没带

2.下载mysql镜像

wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm

3.使用yum下载

yum -y install mysql57-community-release-el7-10.noarch.rpm

4.安装mysql服务

yum -y install mysql-community-server

5.开启服务

systemctl start mysqld.service

6.查看服务

systemctl status mysqld.service

7.查看默认密码