腾讯云安装mysql5、8

wget http://repo.mysql.com/mysql57-community-release-el7-10.noarch.rpm
rpm -Uvh mysql57-community-release-el7-10.noarch.rpm
rpm --import https://repo.mysql.com/RPM-GPG-KEY-mysql-2022
yum install -y mysql-community-server
systemctl start mysqld.service
grep 'temporary password' /var/log/mysqld.log 
use mysql
select user, host from user;
update user set host="%" where user="root";
flush privileges;
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION;
FLUSH PRIVILEGES;

rpm -Uvh https://dev.mysql.com/get/mysql80-community-release-el7-3.noarch.rpm
rpm --import https://repo.mysql.com/RPM-GPG-KEY-mysql-2023
yum install mysql-community-server
systemctl start mysqld
systemctl enable mysqld
systemctl status mysqld
grep 'temporary password' /var/log/mysqld.log
mysql_secure_installation
mysql -u root -p