linux版MySQL安装（详细教程）

linux版MySQL安装（详细教程）

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安装大神带你安装linux版MySQL

1.linux版MySQL安装

①下载yum Repository

wget -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm

②安装yum Repository

yum -y install mysql57-community-release-el7-10.noarch.rpm

③安装mysql5.7

yum -y --nogpgcheck install mysql-community-server

2.MySQL的设置与配置

1）启动MySQL

①开机自启动

systemctl enable mysqld.service

②启动mysql

systemctl start mysqld.service

③查看状态

systemctl status mysqld.service      等到代码前的指示灯变绿色即已经启动

2）修改密码

①获取临时密码

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

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②登录MySQL

③关闭密码复杂验证

set global validate_password_policy=0;
set global validate_password_length=1;

④设置新密码

alter user user() identified by "123456";

3）修改权限：方便远程操作

use mysql;

select host,user,authentication_string from user; --查看权限

GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION;  --修改权限

flush privileges;  --刷新权限

select host,user,authentication_string from user; --查看权限

4）卸载yum Repository

因为安装了yum Repository 以后每次yum操作都会自动更新 所以需要卸载掉

yum -y remove mysql57-community-release-el7-10.noarch

3.linux版MySQL的重新安装

1）卸载mysql 删除依赖包

rpm -qa |grep -i mysql

yum remove mysql-community mysql-community-server mysql-community-libs mysql-community-common

2）清理文件

find / -name mysql
rm -rf 文件名

3）重复上面的1 2步骤