mysql5.7

使用yum安装

yum install http://repo.mysql.com//mysql57-community-release-el6-8.noarch.rpm
yum install mysql-server

启动服务

service mysqld start

修改初始密码

初始密码查看方式：

cat /var/log/mysqld.log|grep "temporary password"

第一次必须修改密码：

SET PASSWORD=PASSWORD('Root1234@');

创建用户

create user 'username'@'10.%' identified by 'Luck@123';

删除用户

DELETE FROM mysql.user WHERE User="username";

授权

GRANT ALL ON $databaseName.* TO 'username'@'10.%';

创建数据库

CREATE DATABASE `test2` DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci

删除表中数据，（重置自增）

TRUNCATE tablename;

刷新权限

 flush privileges