Alibaba cloud centos7 installation and remote link MySQL

Suppose it is a new Alibaba cloud server centos7

to update yum

yum update -y

download mysql Source

Yes It does not provide

wget https://dev.mysql.com/get/mysql80-community-release-el7-3.noarch.rpm

Then add

sudo yum localinstall mysql80-community-release-el7-3.noarch.rpm

install yum Tools The actual measurement is quite important

sudo yum install -y yum-utils

View available mysql

yum repolist enabled | grep "mysql.*-community.*"

View all Mysql edition

yum repolist all | grep mysql

install mysql

sudo yum install -y mysql-community-server

It may take a long time

start-up mysql service

sudo service mysqld start

That's it I tried and the others couldn't start Meeting unit can’t find
see mysql state

sudo service mysqld status

In theory, everything is normal. At this time, we should active running

MySQL initialization

Check the original password ：

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

Log in with the password shown above ：

mysql -u root -p

Set new password ：

ALTER USER 'root'@'localhost' IDENTIFIED BY 'your!NewPass1';

Be case sensitive There are numbers There are special symbols

Set boot up

systemctl enable mysqld

Set up a remote connection

Log in to the database
Execute the following statements in sequence ：

use mysql;
update user set host="%" where user='root';
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'your!NewPass1' WITH GRANT OPTION;
flush privileges;
exit;

restart mysql
If the firewall is on by default , Need configuration 3306

firewall-cmd --permanent --zone=public --add-port=3306/tcp

important ！ If it's Alibaba cloud , Manual field safety group is required ！

I've been treading on pits here for a day
Console -> example -> Security group -> Configuration rules Add an entry direction rule

And then you can use it navicat Tested ！