下载Linux版MySQL安装包
https://downloads.mysql.com/archives/community/下载解压后
安装，按照从上至下顺序，一条一条执行即可安装完毕。
- 进入到rpm所在目录
- rpm -ivh mysql-community-common-8.0.26-1.el7.x86_64.rpm
- rpm -ivh mysql-community-client-plugins-8.0.26-1.el7.x86_64.rpm
- rpm -ivh mysql-community-libs-8.0.26-1.el7.x86_64.rpm
- rpm -ivh mysql-community-libs-compat-8.0.26-1.el7.x86_64.rpm
- yum install openssl-devel
- rpm -ivh mysql-community-devel-8.0.26-1.el7.x86_64.rpm
- rpm -ivh mysql-community-client-8.0.26-1.el7.x86_64.rpm
- sudo yum install libaio 【这一步看情况，如果在执行下一条时出现报错，可以执行这条，当然，得看你具体报什么错】
- rpm -ivh mysql-community-server-8.0.26-1.el7.x86_64.rpm
启动MySQL服务
- systemctl start mysqld 启动
- systemctl restart mysqld 重启
- systemctl stop mysqld 停止
- systemctl status mysqld 查询状态
查询默认生成的root用户密码
- grep 'temporary password' /var/log/mysqld.log
修改密码策略
- set global validate_password.policy = 0; 设置密码复杂度
- set global validate_password.length = 4; 设置密码长度
修改密码
- alter user 'root'@'localhost' IDENTIFIED BY '1234';
创建一个可远程访问到用户，0.0.0.0
- create user 'root'@'%' IDENTIFIED WITH mysql_native_password BY '1234';
修改root用户的权限
-
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' WITH GRANT OPTION;
-
FLUSH PRIVILEGES;
设置只读权限
- GRANT SELECT ON *.* TO 'your_username'@'your_host';
- FLUSH PRIVILEGES;