Centos7 安装MySQL8.0

MySQL安装和配置

1. 安装

1. 检查mysql和mysql-server是否安装

   rpm -qa | grep mysql
   rpm -qa | grep mysql-server

2. 如果之前安装过进行卸载

   yum -y remove mysql*

3. 下载安装MySQL的repo源
   https://repo.mysql.com//mysql80-community-release-el7-3.noarch.rpm

   wget https://repo.mysql.com//mysql80-community-release-el7-3.noarch.rpm
   rpm -ivh mysql80-community-release-el7-3.noarch.rpm

4. 安装mysql 服务器（一路yes）

   yum install mysql-community-server

5. 安装成功后启动服务

   systemctl start mysqld

6. 查看默认密码

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

7. 查看3306端口是否开放

   netstat –ant

8. 将mysql添加为自启动服务

   systemctl enable mysqld

2. 配置

1. 登录MySQL，密码为之前第6步查询出来的

   mysql -u root -pxxx

2. 修改 root 登录密码 (此时密码要根据密码规则设定)

   alter user 'root'@'localhost' identified by 'xxx';

3. 默认MySQL只允许localhost 登录，修改允许其他主机连接

   CREATE USER 'root'@'%' IDENTIFIED BY 'password';
   GRANT ALL ON *.* TO 'root'@'%';
   FLUSH PRIVILEGES;
   ## 查看更新后数据
   use mysql;
   select host, user, authentication_string, plugin from user;

4. 创建其他用户并赋权

   create user ‘用户名’@’访问主机’ identified by ‘密码’;
   grant 权限列表 on 数据库.表 to ‘用户名’@’访问主机’;(修改权限时在后面加with grant option)

附录：

• 密码策略：

  ERROR 1819 (HY000): Your password does not satisfy the current policy requirements

  安装MySQL报错 : Your password does not satisfy the current policy requirements