96 lines
3.7 KiB
Plaintext
96 lines
3.7 KiB
Plaintext
Error reporting via email
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=========================
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When you're running a public site you should always turn off the
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:setting:`DEBUG` setting. That will make your server run much faster, and will
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also prevent malicious users from seeing details of your application that can be
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revealed by the error pages.
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However, running with :setting:`DEBUG` set to ``False`` means you'll never see
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errors generated by your site -- everyone will just see your public error pages.
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You need to keep track of errors that occur in deployed sites, so Django can be
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configured to email you details of those errors.
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Server errors
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-------------
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When :setting:`DEBUG` is ``False``, Django will email the users listed in the
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:setting:`ADMINS` setting whenever your code raises an unhandled exception and
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results in an internal server error (HTTP status code 500). This gives the
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administrators immediate notification of any errors. The :setting:`ADMINS` will
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get a description of the error, a complete Python traceback, and details about
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the HTTP request that caused the error.
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.. note::
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In order to send email, Django requires a few settings telling it
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how to connect to your mail server. At the very least, you'll need
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to specify :setting:`EMAIL_HOST` and possibly
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:setting:`EMAIL_HOST_USER` and :setting:`EMAIL_HOST_PASSWORD`,
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though other settings may be also required depending on your mail
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server's configuration. Consult :doc:`the Django settings
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documentation </ref/settings>` for a full list of email-related
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settings.
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By default, Django will send email from root@localhost. However, some mail
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providers reject all email from this address. To use a different sender
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address, modify the :setting:`SERVER_EMAIL` setting.
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To disable this behavior, just remove all entries from the :setting:`ADMINS`
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setting.
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.. seealso::
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.. versionadded:: 1.3
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Server error emails are sent using the logging framework, so you can
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customize this behaviour by :doc:`customizing your logging configuration
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</topics/logging>`.
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404 errors
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----------
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Django can also be configured to email errors about broken links (404 "page
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not found" errors). Django sends emails about 404 errors when:
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* :setting:`DEBUG` is ``False``
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* :setting:`SEND_BROKEN_LINK_EMAILS` is ``True``
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* Your :setting:`MIDDLEWARE_CLASSES` setting includes ``CommonMiddleware``
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(which it does by default).
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If those conditions are met, Django will email the users listed in the
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:setting:`MANAGERS` setting whenever your code raises a 404 and the request has
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a referer. (It doesn't bother to email for 404s that don't have a referer --
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those are usually just people typing in broken URLs or broken Web 'bots).
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You can tell Django to stop reporting particular 404s by tweaking the
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:setting:`IGNORABLE_404_ENDS` and :setting:`IGNORABLE_404_STARTS` settings. Both
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should be a tuple of strings. For example::
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IGNORABLE_404_ENDS = ('.php', '.cgi')
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IGNORABLE_404_STARTS = ('/phpmyadmin/',)
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In this example, a 404 to any URL ending with ``.php`` or ``.cgi`` will *not* be
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reported. Neither will any URL starting with ``/phpmyadmin/``.
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The best way to disable this behavior is to set
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:setting:`SEND_BROKEN_LINK_EMAILS` to ``False``.
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.. seealso::
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You can also set up custom error reporting by writing a custom piece of
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:ref:`exception middleware <exception-middleware>`. If you do write custom
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error handling, it's a good idea to emulate Django's built-in error handling
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and only report/log errors if :setting:`DEBUG` is ``False``.
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.. seealso::
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.. versionadded:: 1.3
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404 errors are logged using the logging framework. By default, these log
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records are ignored, but you can use them for error reporting by writing a
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handler and :doc:`configuring logging </topics/logging>` appropriately.
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