rpm -Uvh http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm # rpm file download
yum repolist Enabled | grep "MySQL * - * Community Community.."
yum -y install Community Community-Server-mysql
systemctl enable mysqld # boot
systemctl start mysqld # start mysql
mysql_secure_installation set the mysql password
mysql -u root -h 127.0.0.1 -p # landing need to log in for the first time to verify the machine landed
update user set host = '%' where user = 'root'; # Set the root user
grant all privileges on * * to root@'xxx.xxx.xxx.xxx 'identified by' password ';. # root user to run any server access database
FLUSH PRIVILEGES; # final submission
# Note that security group on Ali cloud need to open port 3306, or Rom mysql direct telnet ip 3306 to know the problem is not security group
