分析mysqld的skip-grant-tables选项
发布时间：2021-12-27 00:41:07 所属栏目：MySql教程 来源：互联网
导读：这篇文章主要讲解了分析mysqld的skip-grant-tables选项，文中的讲解内容简单清晰，易于学习与理解，下面请大家跟着小编的思路慢慢深入，一起来研究和学习分析mysqld的skip-grant-tables选项吧！ 这个选项会导致不使用权限系统来启动服务器，它将让任何用户可
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这篇文章主要讲解了“分析mysqld的skip-grant-tables选项”，文中的讲解内容简单清晰，易于学习与理解，下面请大家跟着小编的思路慢慢深入，一起来研究和学习“分析mysqld的skip-grant-tables选项”吧！ 这个选项会导致不使用权限系统来启动服务器，它将让任何用户可以访问服务器并且不受限制的访问所有数据库。在不使用授权表启动服务器后可以通过shell来执行mysqladmin flush-privileges或mysqladmin reload命令或者在连接到服务器后执行flush privileges语句来让正在运行的服务器再次使用授权表。 使用--skip-grant-tables选项启动服务器 [root@localhost mysql]# service mysqld stop Shutting down MySQL. SUCCESS! [root@localhost mysql]# service mysqld start --skip-grant-tables Starting MySQL.. SUCCESS! 现在就可以不使用用户和密码就可以登录服务器 [mysql@localhost ~]$ mysql Welcome to the MySQL monitor. Commands end with ; or g. Your MySQL connection id is 2 Server version: 5.7.26-log Source distribution Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or 'h' for help. Type 'c' to clear the current input statement. mysql> 现在可以执行mysqladin flush-privileges命令让正在运行的服务器再次使用授权表 [mysql@localhost ~]$ mysqladmin flush-privileges 现在不使用用户和密码就不能登录服务器了，必须使用用户和密码才能登录了 [mysql@localhost ~]$ mysql ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO) [mysql@localhost ~]$ mysql -uroot -pabcd mysql mysql: [Warning] Using a password on the command line interface can be insecure. Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Welcome to the MySQL monitor. Commands end with ; or g. Your MySQL connection id is 5 Server version: 5.7.26-log Source distribution Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or 'h' for help. Type 'c' to clear the current input statement. 再次使用--skip-grant-tables选项启动服务器 [root@localhost mysql]# service mysqld stop Shutting down MySQL.. SUCCESS! [root@localhost mysql]# service mysqld start --skip-grant-tables Starting MySQL.. SUCCESS! 现在就可以不使用用户和密码就可以登录服务器 [mysql@localhost ~]$ mysql Welcome to the MySQL monitor. Commands end with ; or g. Your MySQL connection id is 2 Server version: 5.7.26-log Source distribution Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or 'h' for help. Type 'c' to clear the current input statement. mysql> 现在可以执行mysqladin reload命令让正在运行的服务器再次使用授权表 mysql@localhost ~]$ mysqladmin reload 现在不使用用户和密码就不能登录服务器了，必须使用用户和密码才能登录了 [mysql@localhost ~]$ mysql ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO) [mysql@localhost ~]$ mysql -uroot -pabcd mysql mysql: [Warning] Using a password on the command line interface can be insecure. Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Welcome to the MySQL monitor. Commands end with ; or g. Your MySQL connection id is 5 Server version: 5.7.26-log Source distribution Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or 'h' for help. Type 'c' to clear the current input statement. 再次使用--skip-grant-tables选项启动服务器 [root@localhost mysql]# service mysqld stop Shutting down MySQL. SUCCESS! [root@localhost mysql]# service mysqld start --skip-grant-tables Starting MySQL.. SUCCESS! 现在就可以不使用用户和密码就可以登录服务器 [mysql@localhost ~]$ mysql Welcome to the MySQL monitor. Commands end with ; or g. Your MySQL connection id is 2 Server version: 5.7.26-log Source distribution Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or 'h' for help. Type 'c' to clear the current input statement. mysql> 现在可以执行flush privileges语句让正在运行的服务器再次使用授权表 mysql> flush privileges; Query OK, 0 rows affected (0.12 sec) 现在不使用用户和密码就不能登录服务器了，必须使用用户和密码才能登录了 [mysql@localhost ~]$ mysql ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO) [mysql@localhost ~]$ mysql -uroot -pabcd mysql mysql: [Warning] Using a password on the command line interface can be insecure. Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Welcome to the MySQL monitor. Commands end with ; or g. Your MySQL connection id is 5 Server version: 5.7.26-log Source distribution Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or 'h' for help. Type 'c' to clear the current input statement. --skip-grant-tables选项也可以在选项文件my.cnf中进行设置。这个选项还会导致服务器在启动过程中禁止加载用户定义函数(udf)，调度事件和安装插件语句中安装的插件。为了以任何方式来加载插件，使用--plugin-load选项。--skip-grant-tables选项也会导致disabled_storage_engines系统变量失效。 flush privileges语句可以在服务器启动后通过执行其它操作来隐式执行。例如在升级过程中mysql_upgrade程序就会刷新权限。 感谢各位的阅读，以上就是“分析mysqld的skip-grant-tables选项”的内容了，经过本文的学习后，相信大家对分析mysqld的skip-grant-tables选项这一问题有了更深刻的体会，具体使用情况还需要大家实践验证。 （编辑：威海站长网） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |
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