simple_password_check is a password validation plugin. It can check whether a password contains at least a certain number of characters of a specific type. When first installed, a password is required to be at least eight characters, and requires at least one digit, one uppercase character, one lowercase character, and one character that is neither a digit nor a letter.
Note that passwords can be directly set as a hash, bypassing the password validation, if the strict_password_validation variable is
OFF (it is
ON by default).
Although the plugin's shared library is distributed with MariaDB by default, the plugin is not actually installed by MariaDB by default. There are two methods that can be used to install the plugin with MariaDB.
INSTALL SONAME 'simple_password_check';
The second method can be used to tell the server to load the plugin when it starts up. The plugin can be installed this way by providing the
--plugin-load or the
--plugin-load-add options. This can be specified as a command-line argument to
mysqld or it can be specified in a relevant server option group in an option file. For example:
[mariadb] ... plugin_load_add = simple_password_check
UNINSTALL SONAME 'simple_password_check';
If you installed the plugin by providing the
--plugin-load or the
--plugin-load-add options in a relevant server option group in an option file, then those options should be removed to prevent the plugin from being loaded the next time the server is restarted.
When creating a new password, if the criteria are not met, the following error is returned:
SET PASSWORD FOR 'bob'@'%.loc.gov' = PASSWORD('abc'); ERROR 1819 (HY000): Your password does not satisfy the current policy requirements
Prior to MariaDB 10.4.0, all password validation plugins are incompatible with the
pam authentication plugin. See Authentication Plugin - PAM: Conflicts with Password Validation for more information.
OFF- Disables the plugin without removing it from the
ON- Enables the plugin. If the plugin cannot be initialized, then the server will still continue starting up, but the plugin will be disabled.
FORCE- Enables the plugin. If the plugin cannot be initialized, then the server will fail to start with an error.
FORCE_PLUS_PERMANENT- Enables the plugin. If the plugin cannot be initialized, then the server will fail to start with an error. In addition, the plugin cannot be uninstalled with
UNINSTALL PLUGINwhile the server is running.
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