This script is originally from here:

http://tkabber.jabber.ru/files/contributions/check_mysql_python.txt

Requirements:

MySQLdb (install with: easy_install MySQL-python)

Things changed by elm:
 - use sha512 instead of md5
 - allow password changes
 - allow new users to register
 - users can be deleted
 - only connect to the database if a command is issued

This script now supports all actions that can be implemented by an extauth script.