解决“OperationalError: (1862, 'Your password has expired. To log in you must change it using ...”

1. 问题描述

	在64位的ubuntu14.10下进行Django框架开发， 在测试mysql是否可以连通时出现以下信息：

xx@ubuntu:~/workspace/day02$ python manage.py shell
Python 2.7.8 (default, Oct 20 2014, 15:05:19) 
[GCC 4.9.1] on linux2
Type "help", "copyright", "credits" or "license" for more information.
(InteractiveConsole)
>>> from django.db import connection
>>> cursor = connection.cursor()
Traceback (most recent call last):
  File "", line 1, in 
  File "/usr/local/lib/python2.7/dist-packages/django/db/backends/__init__.py", line 165, in cursor
    cursor = self.make_debug_cursor(self._cursor())
  File "/usr/local/lib/python2.7/dist-packages/django/db/backends/__init__.py", line 138, in _cursor
    self.ensure_connection()
  File "/usr/local/lib/python2.7/dist-packages/django/db/backends/__init__.py", line 133, in ensure_connection
    self.connect()
  File "/usr/local/lib/python2.7/dist-packages/django/db/utils.py", line 94, in __exit__
    six.reraise(dj_exc_type, dj_exc_value, traceback)
  File "/usr/local/lib/python2.7/dist-packages/django/db/backends/__init__.py", line 133, in ensure_connection
    self.connect()
  File "/usr/local/lib/python2.7/dist-packages/django/db/backends/__init__.py", line 122, in connect
    self.connection = self.get_new_connection(conn_params)
  File "/usr/local/lib/python2.7/dist-packages/django/db/backends/mysql/base.py", line 472, in get_new_connection
    conn = Database.connect(**conn_params)
  File "/usr/local/lib/python2.7/dist-packages/MySQL_python-1.2.4b4-py2.7-linux-x86_64.egg/MySQLdb/__init__.py", line 81, in Connect
    return Connection(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/MySQL_python-1.2.4b4-py2.7-linux-x86_64.egg/MySQLdb/connections.py", line 187, in __init__
    super(Connection, self).__init__(*args, **kwargs2)
OperationalError: (2003, "Can't connect to MySQL server on '127.0.0.1' (111)")
>>> cursor = connection.cursor()
Traceback (most recent call last):
  File "", line 1, in 
  File "/usr/local/lib/python2.7/dist-packages/django/db/backends/__init__.py", line 165, in cursor
    cursor = self.make_debug_cursor(self._cursor())
  File "/usr/local/lib/python2.7/dist-packages/django/db/backends/__init__.py", line 138, in _cursor
    self.ensure_connection()
  File "/usr/local/lib/python2.7/dist-packages/django/db/backends/__init__.py", line 133, in ensure_connection
    self.connect()
  File "/usr/local/lib/python2.7/dist-packages/django/db/utils.py", line 94, in __exit__
    six.reraise(dj_exc_type, dj_exc_value, traceback)
  File "/usr/local/lib/python2.7/dist-packages/django/db/backends/__init__.py", line 133, in ensure_connection
    self.connect()
  File "/usr/local/lib/python2.7/dist-packages/django/db/backends/__init__.py", line 122, in connect
    self.connection = self.get_new_connection(conn_params)
  File "/usr/local/lib/python2.7/dist-packages/django/db/backends/mysql/base.py", line 472, in get_new_connection
    conn = Database.connect(**conn_params)
  File "/usr/local/lib/python2.7/dist-packages/MySQL_python-1.2.4b4-py2.7-linux-x86_64.egg/MySQLdb/__init__.py", line 81, in Connect
    return Connection(*args, **kwargs)
  File "/usr/local/lib/python2.7/dist-packages/MySQL_python-1.2.4b4-py2.7-linux-x86_64.egg/MySQLdb/connections.py", line 187, in __init__
    super(Connection, self).__init__(*args, **kwargs2)
OperationalError: (1862, 'Your password has expired. To log in you must change it using a client that supports expired passwords.')
>>>

由上面的"OperationalError: (1862, 'Your password has expired. To log in you must change it using a client that supports expired passwords.')"可知， mysql用户的密码过期了

但我记得在安装完mysql后设置了root用户的密码为123456， 且执行以下命令能正常进入mysql的shell：

mysql -uroot -p123456

既然能正常进入mysql的控制台， 但不能正常连接mysql， 那么我们再次设置密码， 我参考了以下链接：http://dev.mysql.com/doc/refman/5.6/en/set-password.html

发现以前那种修改密码的方法不可用， 只有SET PASSWORD = PASSWORD('123456')能有效：

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> user mysql;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'user mysql' at line 1
mysql> use mysql;
ERROR 1820 (HY000): You must SET PASSWORD before executing this statement
mysql> UPDATE user SET password=PASSWORD('123456') WHERE user='root';
ERROR 1046 (3D000): No database selected
mysql> use mysql;
ERROR 1820 (HY000): You must SET PASSWORD before executing this statement
mysql> SET PASSWORD = PASSWORD('123456');
Query OK, 0 rows affected (0.10 sec)

mysql> use mysql;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql>

于是再次测试能否通过连接， 结果成功连上mysql数据库， 如下：

OperationalError: (1862, 'Your password has expired. To log in you must change it using a client that supports expired passwords.')
>>> cursor = connection.cursor()
>>> 

3. 若window下出现这种情况 

若window下出现这种情况， 则到mysql的安装目录下的bin目录下， 执行 mysql -uroot -p 进入mysql shell

OK， Enjoy it!!!