[root@localhost ~]# wget -i -c http://dev.mysql.com/get/mysql57-community-release-el7-10.noarch.rpm
[root@localhost ~]# yum -y install mysql57-community-release-el7-10.noarch.rpm
[root@localhost ~]# yum -y install mysql-community-server
至此,MySQL就安装完成了,然后对MySQL进行一些设置。
安装过程报错时:
GPG Keys are configured as: file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
出现上述提示原因是Mysql的GPG升级了,需要重新获取
执行: rpm --import https://repo.mysql.com/RPM-GPG-KEY-mysql-2022
再次进行服务安装:yum -y install mysql-server
首先启动MySQL
[root@localhost ~]# systemctl start mysqld.service
查看MySQL运行状态:
[root@localhost ~]# systemctl status mysqld.service
想进入MySQL还得先找出此时root用户的密码,通过如下命令可以在日志文件中找出密码:
[root@localhost ~]# grep "password" /var/log/mysqld.log
进入数据库:
[root@localhost ~]# mysql -uroot -p
输入初始密码,此时不能做任何事情,因为MySQL默认必须修改密码之后才能操作数据库:
mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'new password';
这里有个问题,新密码设置的时候如果设置的过于简单会报错, 原因是因为MySQL有密码设置的规范, MySQL完整的初始密码规则可以通过如下命令查看:
mysql> SHOW VARIABLES LIKE 'validate_password%'; +--------------------------------------+-------+ | Variable_name | Value | +--------------------------------------+-------+ | validate_password_check_user_name | OFF | | validate_password_dictionary_file | | | validate_password_length | 4 | | validate_password_mixed_case_count | 1 | | validate_password_number_count | 1 | | validate_password_policy | LOW | | validate_password_special_char_count | 1 | +--------------------------------------+-------+ 7 rows in set (0.01 sec)
执行下列命令
mysql> set global validate_password_policy=0; mysql> set global validate_password_length=1;
设置之后就是我上面查出来的那几个值了,此时密码就可以设置的很简单。
mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'new password';mysql> quit;
mysql -u root -p use mysql;update mysql.user set authentication_string=PASSWORD('new password'), plugin='mysql_native_password' where user='root';flush privileges; quit; service mysql stop service mysql start
因为安装了Yum Repository,每次yum操作都会自动更新,需要卸载掉:
[root@localhost ~]# yum -y remove mysql57-community-release-el7-10.noarch
此时才算真的完成了。