1. 下载并安装MySQL官方repository
wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm
然后安装
yum -y install mysql57-community-release-el7-10.noarch.rpm
然后安装mysql服务器
yum -y install mysql-community-server
2.配置mysql数据库
首先启动数据库
systemctl start mysqld.service --启动 systemctl stauts mysqld.service --查看状态 grep "password" /var/log/mysqld.log --查看root默认密码
登陆数据库
mysql -u root -p 默认密码 ALTER USER 'root'@'localhost' IDENTIFIED BY 'new password'; 或 set password for 'root'@'localhost'=password('MyNewPass4!'); 或 update mysql.user set authentication_string=password('123456') where user='root' ;
配置mysql可以设置简单密码
set global validate_password_policy=0; set global validate_password_length=1; 或 在 vim /etc/my.cnf配置文件中增加： validate_password=off default_password_lifetime=0
查看密码规则
show variables like '%password%';
卸载mysql Repository，不然每次yum会自动更新
yum -y remove mysql57-community-release-el7-10.noarch