MYSQL

• 添加源 wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm

• yum -y install mysql57-community-release-el7-10.noarch.rpm

• 安装 yum -y install mysql-community-server

• 启动 systemctl start mysqld.service

• 查看状态 systemctl status mysqld.service

  
  查看状态

• 查看密码 grep "password" /var/log/mysqld.log

  
  查看密码

• 登陆MySQL mysql -u root -p
• 修改密码 ALTER USER 'root'@'localhost' IDENTIFIED BY 'new password';

• 密码过于简单设置不成功

  
  密码设置不成功

设置密码安全等级
set global validate_password_policy=0;
set global validate_password_length=1;

• 移除源 yum -y remove mysql57-community-release-el7-10.noarch
• 授权远端连接 grant all on . to root@'%' identified by 'password';