MySQL 5.7.28安装教程

MySQL 5.7.28安装教程

一.官网下载rpm包

https://downloads.mysql.com/archives/community/

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二.卸载旧的mysql组件

mysql-5.7.28-1.el7.x86_64.rpm-bundle.tar

1.查看旧版,看到如下mysql组件，不同版本会有差异

rpm -qa | grep mysql

2.卸载组件

rpm -e --nodeps mysql-community-libs-5.7.30-1.el7.x86_64

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三.安装mysql

1.解压刚刚下载的tar包

tar -xvf mysql-5.7.28-1.el7.x86_64.rpm-bundle.tar

2.按照依赖顺序安装mysql组件

rpm -ivh mysql-community-common-5.7.28-1.el7.x86_64.rpm
rpm -ivh mysql-community-libs-5.7.28-1.el7.x86_64.rpm
rpm -ivh mysql-community-client-5.7.28-1.el7.x86_64.rpm
rpm -ivh mysql-community-server-5.7.28-1.el7.x86_64.rpm

3.查看版本

四.登录并配置root用户

1.mysql启动，查看状态，停止mysql命令

systemctl start mysqld.service
systemctl status mysqld.service
systemctl stop mysqld.service

2.查看默认root密码

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

3.用默认密码登录

mysql -uroot -p

4.设置密码复杂度策略，

set global validate_password_policy=0;  //基于长度判断密码标准
set global validate_password_length=1;	//设置长度最低为4

5.修改密码，123456为要修改的密码

set password for [e-mail]=password('123456');

6.此时root只能本机访问，授予远程访问权限

grant all privileges on *.* to [e-mail]'%' identified by '123456';

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五.创建普通用户并授权

1.创建普通用户，username为用户名，%代表能在所有主机登录

CREATE USER 'username'@'%' IDENTIFIED BY '123456';

2.授权表操作权限，

GRANT ALL ON *.* TO 'username'@'%';        //所有库所有表权限，具体库表权限可修改*.*