Centos7 Mysql安裝

1.下載mysql源安裝包

wget http://dev.mysql.com/get/mysql57-community-release-el7-8.noarch.rpm

2.安裝mysql源

yum localinstall mysql57-community-release-el7-8.noarch.rpm

3.檢查mysql源是否安裝成功

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

4.安裝MySQL

yum install mysql-community-server

5.啓動MySQL服務

service mysqld start

等同於命令：systemctl start mysqld

重啓命令是：service mysqld restart

6.檢查mysql 的運行狀態

service mysqld status

 

 7.修改root本地登陸密碼

7.1查看初始密碼

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

 

 7.2用初始密碼登陸

mysql -uroot -p

7.3修改初始密碼

set password for 'root'@'localhost'=password('Root@123456'); 

注意：mysql5.7默認安裝了密碼安全檢查插件（validate_password），默認密碼檢查策略要求密碼必須包含：大小寫字母、數字和特殊符號，而且長度不能少於8位。不然會提示ERROR 1819 (HY000): Your password does not satisfy the current policy requirements錯誤

 

8.受權其餘機器登錄

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

FLUSH  PRIVILEGES;

 

 9.防火牆開啓3306端口

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

sudo systemctl restart firewalld.service #重啓防火牆

 

查看全部開啓的端口命令：firewall-cmd --list-ports

10.測試鏈接

 

 

 11.設置mysql開機啓動

systemctl enable mysqld

12.mysql文件目錄systemctl daemon-reload

 

參考文檔：

https://www.linuxidc.com/Linux/2016-09/135288.htm

https://www.cnblogs.com/jimboi/p/6405560.html

https://www.cnblogs.com/silentdoer/articles/7258232.html