Alibaba cloud installs mysql5.7

One 、 download MySQL Official yum repository

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

Two 、 install rpm package

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

3、 ... and 、 install MySQL service

yum -y install mysql-community-server

Four 、 start-up MYSQL

systemctl start mysqld.service

5、 ... and 、 see MYSQL state

systemctl status mysqld.service

6、 ... and 、 modify MYSQL password

mysql -u root -p

First boot MySQL after , There will be a temporary password , The default initial password is /var/log/mysqld.log In file , We can use this command to see ：
grep “password” /var/log/mysqld.log

Carry out orders

alter user user() identified by "@xxxxx";

Refresh database

flush privileges; 

And then quit

exit;

Restart the service

systemctl restart mysqld.service

7、 ... and 、 Modify remote connection

Then login by password

mysql -u root -p

Then enter the password above to log in . Then execute the following command

use mysql;

Execute the following command , Modify user remote access permissions

GRANT ALL PRIVILEGES ON * . * TO 'root'@'%' IDENTIFIED BY '123456';

there 123456 The password you set for the new permission user ,% On behalf of all hosts , It can also be specific to your host ip Address （ take ’%‘ Change it to ’ Your host IP’）

Then refresh the database

flush privileges;

At this point, you can connect to the database through the client tool .