The password-validation plugin is named
validate_password. To be usable by the
server, the plugin library object file must be located in the
MySQL plugin directory (the directory named by the
plugin_dir system variable). If
necessary, set the value of
plugin_dir at server startup to
tell the server the location of the plugin directory.
To load the plugin at server startup, use the
--plugin-load option to name the
object file that contains the plugin. With this plugin-loading
method, the option must be given each time the server starts.
For example, put these lines in your
If object files have a suffix different from
.so on your system, substitute the correct
suffix (for example,
.dll on Windows).
Alternatively, to register the plugin at runtime, use this statement (changing the extension as necessary):
INSTALL PLUGIN validate_password SONAME 'validate_password.so';
INSTALL PLUGIN loads the plugin,
and also registers it in the
table to cause the plugin to be loaded for each subsequent
normal server startup.
If the plugin has been previously registered with
INSTALL PLUGIN or is loaded with
--plugin-load, you can use the
--validate-password option at server startup to
control plugin activation. For example, to load the plugin at
startup and prevent it from being removed at runtime, use these
[mysqld] plugin-load=validate_password.so validate-password=FORCE_PLUS_PERMANENT
If it is desired to prevent the server from running without the
password-validation plugin, use
--validate-password with a value
FORCE_PLUS_PERMANENT to force server startup
to fail if the plugin does not initialize successfully.
For general information about installing or uninstalling
plugins, see Installing and Uninstalling Plugins. To verify
plugin installation, examine the
INFORMATION_SCHEMA.PLUGINS table or
SHOW PLUGINS statement.
See Obtaining Server Plugin Information.