Django:500内部服务器错误，是因为只有MySQL数据库吗？

我使用mod_wsgi在digital ocean上安装了Django，但它有500个内部服务器错误。当我查看apache错误日志时，我得到的是：

[Mon Dec 16 20:45:53 2013] [error] [client 61.147.99.202] File does not exist: /var/www/web-console
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23] mod_wsgi (pid=29891): Exception occurred processing WSGI script '/var/www/kaasib/kaasib/wsgi.py'.
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23] Traceback (most recent call last):
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/wsgi.py", line 187, in __call__
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23]     self.load_middleware()
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py", line 47, in load_middleware
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23]     mw_class = import_by_path(middleware_path)
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/utils/module_loading.py", line 21, in import_by_path
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23]     module = import_module(module_path)
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/utils/importlib.py", line 40, in import_module
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23]     __import__(name)
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/contrib/auth/middleware.py", line 3, in <module>
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23]     from django.contrib.auth.backends import RemoteUserBackend
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/contrib/auth/backends.py", line 3, in <module>
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23]     from django.contrib.auth.models import Permission
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/contrib/auth/models.py", line 48, in <module>
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23]     class Permission(models.Model):
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/db/models/base.py", line 96, in __new__
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23]     new_class.add_to_class('_meta', Options(meta, **kwargs))
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/db/models/base.py", line 264, in add_to_class
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23]     value.contribute_to_class(cls, name)
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/db/models/options.py", line 124, in contribute_to_class
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23]     self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/db/__init__.py", line 34, in __getattr__
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23]     return getattr(connections[DEFAULT_DB_ALIAS], item)
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/db/utils.py", line 198, in __getitem__
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23]     backend = load_backend(db['ENGINE'])
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/db/utils.py", line 113, in load_backend
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23]     return import_module('%s.base' % backend_name)
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/utils/importlib.py", line 40, in import_module
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23]     __import__(name)
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/db/backends/mysql/base.py", line 17, in <module>
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23]     raise ImproperlyConfigured("Error loading MySQLdb module: %s" % e)
[Tue Dec 17 02:01:50 2013] [error] [client 175.110.123.23] ImproperlyConfigured: Error loading MySQLdb module: No module named MySQLdb
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23] mod_wsgi (pid=29984): Exception occurred processing WSGI script '/var/www/kaasib/kaasib/wsgi.py'.
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23] Traceback (most recent call last):
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/wsgi.py", line 187, in __call__
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23]     self.load_middleware()
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py", line 47, in load_middleware
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23]     mw_class = import_by_path(middleware_path)
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/utils/module_loading.py", line 21, in import_by_path
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23]     module = import_module(module_path)
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/utils/importlib.py", line 40, in import_module
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23]     __import__(name)
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/contrib/auth/middleware.py", line 3, in <module>
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23]     from django.contrib.auth.backends import RemoteUserBackend
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/contrib/auth/backends.py", line 3, in <module>
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23]     from django.contrib.auth.models import Permission
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/contrib/auth/models.py", line 48, in <module>
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23]     class Permission(models.Model):
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/db/models/base.py", line 96, in __new__
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23]     new_class.add_to_class('_meta', Options(meta, **kwargs))
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/db/models/base.py", line 264, in add_to_class
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23]     value.contribute_to_class(cls, name)
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/db/models/options.py", line 124, in contribute_to_class
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23]     self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/db/__init__.py", line 34, in __getattr__
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23]     return getattr(connections[DEFAULT_DB_ALIAS], item)
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/db/utils.py", line 198, in __getitem__
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23]     backend = load_backend(db['ENGINE'])
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/db/utils.py", line 113, in load_backend
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23]     return import_module('%s.base' % backend_name)
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/utils/importlib.py", line 40, in import_module
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23]     __import__(name)
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/db/backends/mysql/base.py", line 17, in <module>
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23]     raise ImproperlyConfigured("Error loading MySQLdb module: %s" % e)
[Tue Dec 17 02:07:26 2013] [error] [client 175.110.123.23] ImproperlyConfigured: Error loading MySQLdb module: No module named MySQLdb
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23] mod_wsgi (pid=29959): Exception occurred processing WSGI script '/var/www/kaasib/kaasib/wsgi.py'.
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23] Traceback (most recent call last):
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/wsgi.py", line 187, in __call__
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23]     self.load_middleware()
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py", line 47, in load_middleware
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23]     mw_class = import_by_path(middleware_path)
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/utils/module_loading.py", line 21, in import_by_path
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23]     module = import_module(module_path)
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/utils/importlib.py", line 40, in import_module
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23]     __import__(name)
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/contrib/auth/middleware.py", line 3, in <module>
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23]     from django.contrib.auth.backends import RemoteUserBackend
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/contrib/auth/backends.py", line 3, in <module>
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23]     from django.contrib.auth.models import Permission
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/contrib/auth/models.py", line 48, in <module>
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23]     class Permission(models.Model):
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/db/models/base.py", line 96, in __new__
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23]     new_class.add_to_class('_meta', Options(meta, **kwargs))
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/db/models/base.py", line 264, in add_to_class
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23]     value.contribute_to_class(cls, name)
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/db/models/options.py", line 124, in contribute_to_class
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23]     self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/db/__init__.py", line 34, in __getattr__
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23]     return getattr(connections[DEFAULT_DB_ALIAS], item)
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/db/utils.py", line 198, in __getitem__
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23]     backend = load_backend(db['ENGINE'])
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/db/utils.py", line 113, in load_backend
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23]     return import_module('%s.base' % backend_name)
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/utils/importlib.py", line 40, in import_module
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23]     __import__(name)
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23]   File "/usr/local/lib/python2.7/dist-packages/django/db/backends/mysql/base.py", line 17, in <module>
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23]     raise ImproperlyConfigured("Error loading MySQLdb module: %s" % e)
[Tue Dec 17 02:38:09 2013] [error] [client 175.110.123.23] ImproperlyConfigured: Error loading MySQLdb module: No module named MySQLdb

[Mon-Dec 16 20:45:53 2013][error][client 61.147.99.202]文件不存在：/var/www/web控制台
[Tue Dec 17 02:01:50 2013][error][client 175.110.123.23]mod_wsgi（pid=29891）：处理wsgi脚本'/var/www/kaasib/kaasib/wsgi.py'时发生异常。
[Tue Dec 17 02:01:50 2013][error][client 175.110.123.23]回溯（最近一次通话）：
[Tue Dec 17 02:01:50 2013][error][client 175.110.123.23]文件“/usr/local/lib/python2.7/dist packages/django/core/handlers/wsgi.py”，第187行，在__
[Tue Dec 17 02:01:50 2013][error][client 175.110.123.23]self.load_中间件（）
[Tue Dec 17 02:01:50 2013][error][client 175.110.123.23]文件“/usr/local/lib/python2.7/dist packages/django/core/handlers/base.py”，第47行，在load_中间件中
[Tue Dec 17 02:01:50 2013][error][client 175.110.123.23]mw_class=通过_路径导入_（中间件路径）
[Tue Dec 17 02:01:50 2013][error][client 175.110.123.23]文件“/usr/local/lib/python2.7/dist packages/django/utils/module_load.py”，第21行，按路径导入
[Tue Dec 17 02:01:50 2013][error][client 175.110.123.23]模块=导入模块（模块路径）
[Tue Dec 17 02:01:50 2013][error][client 175.110.123.23]文件“/usr/local/lib/python2.7/dist packages/django/utils/importlib.py”，第40行，在导入模块中
[2013年12月17日星期二02:01:50][error][client 175.110.123.23]\uuuuuu import\uuuuuuu（名称）
[Tue Dec 17 02:01:50 2013][error][client 175.110.123.23]文件“/usr/local/lib/python2.7/dist packages/django/contrib/auth/middleware.py”，第3行
[Tue Dec 17 02:01:50 2013][error][client 175.110.123.23]来自django.contrib.auth.backends导入RemoteUserBackend
[Tue Dec 17 02:01:50 2013][error][client 175.110.123.23]文件“/usr/local/lib/python2.7/dist packages/django/contrib/auth/backends.py”，第3行
[Tue Dec 17 02:01:50 2013][error][client 175.110.123.23]来自django.contrib.auth.models的进口许可
[Tue Dec 17 02:01:50 2013][error][client 175.110.123.23]文件“/usr/local/lib/python2.7/dist packages/django/contrib/auth/models.py”，第48行
[Tue Dec 17 02:01:50 2013][error][client 175.110.123.23]类权限（models.Model）：
[Tue Dec 17 02:01:50 2013][error][client 175.110.123.23]文件“/usr/local/lib/python2.7/dist packages/django/db/models/base.py”，第96行，新__
[Tue Dec 17 02:01:50 2013][error][client 175.110.123.23]新的_类。将_添加到_类（“_meta”，选项（meta，**kwargs））
[Tue Dec 17 02:01:50 2013][error][client 175.110.123.23]文件“/usr/local/lib/python2.7/dist packages/django/db/models/base.py”，第264行，添加到类中
[Tue Dec 17 02:01:50 2013][error][client 175.110.123.23]价值。贡献给课程（cls，姓名）
[Tue Dec 17 02:01:50 2013][error][client 175.110.123.23]文件“/usr/local/lib/python2.7/dist-packages/django/db/models/options.py”，第124行，贡献给课程
[Tue Dec 17 02:01:50 2013][error][client 175.110.123.23]self.db_table=truncate_name（self.db_table，connection.ops.max_name_length（））
[Tue Dec 17 02:01:50 2013][error][client 175.110.123.23]文件“/usr/local/lib/python2.7/dist packages/django/db/_init_uuuuuu.py”，第34行，在__
[Tue Dec 17 02:01:50 2013][error][client 175.110.123.23]返回getattr（连接[默认的数据库别名]，项目）
[Tue Dec 17 02:01:50 2013][error][client 175.110.123.23]文件“/usr/local/lib/python2.7/dist packages/django/db/utils.py”，第198行，在__
[Tue Dec 17 02:01:50 2013][error][client 175.110.123.23]backend=load_backend（db['ENGINE']
[Tue Dec 17 02:01:50 2013][error][client 175.110.123.23]文件“/usr/local/lib/python2.7/dist packages/django/db/utils.py”，第113行，在load_后端
[Tue Dec 17 02:01:50 2013][error][client 175.110.123.23]返回导入_模块（“%s.base”%backend_name）
[Tue Dec 17 02:01:50 2013][error][client 175.110.123.23]文件“/usr/local/lib/python2.7/dist packages/django/utils/importlib.py”，第40行，在导入模块中
[2013年12月17日星期二02:01:50][error][client 175.110.123.23]\uuuuuu import\uuuuuuu（名称）
[Tue Dec 17 02:01:50 2013][error][client 175.110.123.23]文件“/usr/local/lib/python2.7/dist packages/django/db/backends/mysql/base.py”，第17行
[Tue Dec 17 02:01:50 2013][error][client 175.110.123.23]raise配置不正确（“加载MySQLdb模块时出错：%s”%e）
[Tue Dec 17 02:01:50 2013][error][client 175.110.123.23]配置不正确：加载MySQLdb模块时出错：没有名为MySQLdb的模块
[Tue Dec 17 02:07:26 2013][error][client 175.110.123.23]mod_wsgi（pid=29984）：处理wsgi脚本'/var/www/kaasib/kaasib/wsgi.py'时发生异常。
[Tue Dec 17 02:07:26 2013][error][client 175.110.123.23]回溯（最近一次通话）：
[Tue Dec 17 02:07:26 2013][error][client 175.110.123.23]文件“/usr/local/lib/python2.7/dist packages/django/core/handlers/wsgi.py”，第187行，在__
[Tue Dec 17 02:07:26 2013][error][client 175.110.123.23]self.load_中间件（）
[Tue Dec 17 02:07:26 2013][error][client 175.110.123.23]文件“/usr/local/lib/python2.7/dist packages/django/core/handlers/base.py”，第47行，在load_中间件中
[Tue Dec 17 02:07:26 2013][error][client 175.110.123.23]mw_class=通过_路径导入_（中间件路径）
[Tue Dec 17 02:07:26 2013][error][client 175.110.123.23]文件“/usr/local/lib/python2.7/dist packages/django/utils/module_load.py”，第21行，按路径导入
[Tue Dec 17 02:07:26 2013][error][client 175.110.123.23]模块=导入模块（模块路径）
[Tue Dec 17 02:07:26 2013][error][client 175.110.123.23]文件“/usr/local/lib/python2.7/dist packages/django/utils/importlib.py”，第40行，在导入模块中
[2013年12月17日星期二02:07:26][error][client 175.110.123.23]\uuuuuu import\uuuuuuu（名称）
[2013年12月17日星期二02:07:26][错误][客户175.110.123.23