Centos7安装mysql

新地址

https://blog.csdn.net/qq_30758673

下载安装mysql

• 卸载自带的迷你库
  rpm -qa | grep mariadb | xargs rpm -e --nodeps
• 下载yum镜像下载源
  wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm
• 安装yum下载源
  yum -y install mysql57-community-release-el7-10.noarch.rpm
• 开始下载
  yum -y install mysql-community-server

配置mysql

1. 启动MySQL服务

   systemctl start mysqld.service

2. 设置mysql自启

   systemctl enable mysqld.service

3. 首次登录mysql
4. 设置root用户名密码
   • 初始密码在/var/log/mysqld.log

     grep "password" /var/log/mysqld.log

   • 输入初始密码进入数据库

     mysql -uroot -p

   • 设置密码密码安全级别

     SET global validate_password_policy=0;

   • 设置密码长度

     set global validate_password_length=1;

   • 添加root用户

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

   • 设置外部主机访问本地数据库

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

   • 刷新设置
     flush privileges;