yum update
yum install ncurses-compat-libs

wget https://repo.mysql.com/yum/mysql-5.7-community/el/7/x86_64/mysql-community-libs-5.7.31-1.el7.x86_64.rpm
wget https://repo.mysql.com/yum/mysql-5.7-community/el/7/x86_64/mysql-community-common-5.7.31-1.el7.x86_64.rpm
wget https://repo.mysql.com/yum/mysql-5.7-community/el/7/x86_64/mysql-community-client-5.7.31-1.el7.x86_64.rpm
wget https://repo.mysql.com/yum/mysql-5.7-community/el/7/x86_64/mysql-community-server-5.7.31-1.el7.x86_64.rpm

rpm -Uvh mysql-community-libs-5.7.31-1.el7.x86_64.rpm
rpm -Uvh mysql-community-common-5.7.31-1.el7.x86_64.rpm
rpm -Uvh mysql-community-client-5.7.31-1.el7.x86_64.rpm
rpm -Uvh mysql-community-server-5.7.31-1.el7.x86_64.rpm

systemctl start mysqld

grep 'temporary password' /var/log/mysqld.log

mysql -u root -p

set password for 'root'@'%' = password('123456');

set global validate_password_policy=0;

create user 'chutianshu'@'%' identified by 'XXXXXXXX';

GRANT ALL PRIVILEGES ON *.* TO 'username'@'%' identified by '123456';

flush privileges;

vim /etc/my.cnf

port=63306