Install mysql5.7 under centos7

Centos7 install and configure MySQL5.7

1、 download mysql Of rpm package

wget https://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm

2、 install mysql Install source

yum -y localinstall mysql57-community-release-el7-11.noarch.rpm

3、 Online installation mysql

yum -y install mysql-community-server

Download more things , Please be patient

4、 start-up MySQL service

systemctl start mysqld

5、 Set boot up

systemctl enable mysqld
systemctl daemon-reload

6、 modify root The login password

mysql After installation , Will be in /var/log/mysqld.log In the document root Generated a temporary default password .

vim /var/log/mysqld.log

Copy this password , Use this password to log in root

[[email protected] ~]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.7.29 MySQL Community Server (GPL)

Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>

Change Password , mysql5.7 The default password policy requires that the password must be a combination of upper and lower case alphanumeric special letters , At least 8 position

ALTER USER 'root'@'localhost' IDENTIFIED BY '[email protected]';

Allow remote login

GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '[email protected]' WITH GRANT OPTION;

Refresh the permissions

flush privileges;      # Refresh current configuration 

7、 Configure firewall

# 1>  to open up 3306 port （ Use under virtual machine , Please configure services for ECS ）
#  Set up  iptables service
yum -y install iptables-services

#  If you want to modify the firewall configuration , For example, add firewall port 3306
vi /etc/sysconfig/iptables 

#  Add rules 
-A INPUT -p tcp -m state --state NEW -m tcp --dport 3306 -j ACCEPT   # Save after exit 

#  Configure firewall :
systemctl restart iptables.service     #  Restart the firewall for the configuration to take effect 
systemctl enable iptables.service      #  Set the firewall to power on 

8、 To configure mysql The default encoding is utf-8

modify /etc/my.cnf The configuration file , stay [mysqld] Add coding configuration

character_set_server=utf8

init_connect=‘SET NAMES utf8’

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9、 restart mysqld

systemctl restart mysqld

ES utf8’

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9、 restart mysqld

systemctl restart mysqld