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下载链接:https://dev.mysql.com/downloads/mysql/
总共下载5个RPM包
[root@localhost opt]# rpm -qa |grep mysql
# 如果有,就强制卸载
[root@localhost opt]# rpm -e --nodeps foo.rpm
$ rpm -ivh mysql-community-client-plugins-8.0.22-1.el8.x86_64.rpm
$ rpm -ivh mysql-community-common-8.0.22-1.el8.x86_64.rpm
$ rpm -ivh mysql-community-libs-8.0.22-1.el8.x86_64.rpm
$ rpm -ivh mysql-community-client-8.0.22-1.el8.x86_64.rpm
$ rpm -ivh mysql-community-server-8.0.22-1.el8.x86_64.rpm
方式一
[root@localhost opt]# mysqladmin --version
方式二
[root@localhost opt]# cat /etc/passwd | grep mysql
[root@localhost opt]# cat /etc/group | grep mysql
[root@localhost opt]# systemctl start mysqld.service
[root@localhost opt]# systemctl status mysqld.service
# 查看随机生成的临时密码
[root@localhost log]# sudo grep 'temporary password' /var/log/mysqld.log
2020-11-03T17:42:09.442518Z 6 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: xnH35m=MttN9
# 使用临时密码登录
[root@localhost log]# mysql -u root -p
Enter password: xnH35m=MttN9 # 随机密码
注意:默认情况下安装validate_password。 validate_password实现的默认密码策略要求密码至少包含一个大写字母,一个小写字母,一位数字和一个特殊字符,并且密码总长度至少为8个字符。
# 修改密码,注意密码的条件
mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'UnwrappingPass1!';
Query OK, 0 rows affected (0.02 sec)
# 修改root用户的host为%
mysql> use mysql;
mysql> update user set host='%' where user='root';
mysql> commit;
mysql> alter user 'root'@'%' identified with mysql_native_password by 'UnwrappingPass1!';
mysql> commit;
https://blog.51cto.com/11261718/2465227
https://dev.mysql.com/doc/refman/8.0/en/linux-installation-rpm.html
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