1.安装mysql的yum仓库

执行以下命令:

yum localinstall https://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm

2.安装mysql

dnf install mysql-community-server

3.开启mysql服务

service mysql start

4.查找默认密码

为了加强安全性,MySQL5.7为root用户随机生成了一个密码,在error log中,关于error log的位置,如果安装的是RPM包,则默认是/var/log/mysqld.log。
只有启动过一次mysql才可以查看临时密码,输入以下命令查看密码:

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

输出如下:

[root@VM_0_13_centos init.d]# grep \'temporary password\' /var/log/mysqld.log                                                    
2018-03-09T13:03:32.859149Z 1 [Note] A temporary password is generated for root@localhost: IVXhn:4E3uQ4  

5.登陆mysql并且修改密码

ALTER USER \'root\'@\'localhost\' IDENTIFIED BY \'root123\';

修改密码,会出现:

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

必须修改两个全局参数:
首先,修改validate_password_policy参数的值

 set global validate_password_policy=0; 

再修改密码的长度

set global validate_password_length=1;

再次执行修改密码就可以了

ALTER USER \'root\'@\'localhost\' IDENTIFIED BY \'root123\';

6.授权其他机器连接

GRANT ALL PRIVILEGES ON *.* TO \'root\'@\'%\' IDENTIFIED BY \'passwort\' WITH GRANT OPTION; //passwort改为mysql登陆密码

FLUSH  PRIVILEGES;

7.密码设置的详细说明

https://www.linuxidc.com/Linux/2016-01/127831.htm

版权声明:本文为vitasyuan原创文章,遵循 CC 4.0 BY-SA 版权协议,转载请附上原文出处链接和本声明。
本文链接:https://www.cnblogs.com/vitasyuan/p/8536983.html