# 卸载旧版
rpm -qa | grep mysql
sudo rpm -e --nodeps mysql-community-release-el7-5.noarch

# 安装5.7新版
wget http://repo.mysql.com/mysql57-community-release-el7-10.noarch.rpm
sudo rpm -Uvh mysql57-community-release-el7-10.noarch.rpm
# 导入key
sudo rpm --import https://repo.mysql.com/RPM-GPG-KEY-mysql-2022