Centos7 安装mysql

一、下载安装包

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

二、安装mysql源

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

三、查看是否成功安装

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

出现以上表示安装成功

四、安装mysql

yum install mysql-community-server

五、启动mysql

systemctl start mysqld

  5.1、查看mysql的启动状态

systemctl status mysqld

六、开机启动

systemctl enable mysqld
systemctl daemon-reload

七、修改root密码

　　mysql安装完成之后，在/var/log/mysqld.log文件中给root生成了一个默认密码。

 　　修改密码之前，先修改mysql的密码策略

#登陆到mysql
mysql -uroot -p
#修改策略 不修改会报错ERROR 1819 (HY000): Your password does not satisfy the #current policy requirements
set global validate_password_policy=0;

ALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPass4!'; 

八、设置防火墙

　　开放3306端口

firewall-cmd --zone=public --add-port=3306/tcp --permanent
systemctl restart firewalld.service

九、设置mysql可以远程访问

#在mysql 控制台执行
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'MyPassword' WITH GRANT OPTION;

十、look