80 lines
2.8 KiB
ReStructuredText
80 lines
2.8 KiB
ReStructuredText
.. _security:
|
|
|
|
Security
|
|
========
|
|
The two main security components you will use with the
|
|
Python driver are Authentication and SSL.
|
|
|
|
Authentication
|
|
--------------
|
|
Versions 2.0 and higher of the driver support a SASL-based
|
|
authentication mechanism when :attr:`~.Cluster.protocol_version`
|
|
is set to 2 or higher. To use this authentication, set
|
|
:attr:`~.Cluster.auth_provider` to an instance of a subclass
|
|
of :class:`~cassandra.auth.AuthProvider`. When working
|
|
with Cassandra's ``PasswordAuthenticator``, you can use
|
|
the :class:`~cassandra.auth.PlainTextAuthProvider` class.
|
|
|
|
For example, suppose Cassandra is setup with its default
|
|
'cassandra' user with a password of 'cassandra':
|
|
|
|
.. code-block:: python
|
|
|
|
from cassandra.cluster import Cluster
|
|
from cassandra.auth import PlainTextAuthProvider
|
|
|
|
auth_provider = PlainTextAuthProvider(username='cassandra', password='cassandra')
|
|
cluster = Cluster(auth_provider=auth_provider, protocol_version=2)
|
|
|
|
|
|
When working with version 2 or higher of the driver, the protocol
|
|
version is set to 2 by default, but we've included it in the example
|
|
to be explicit.
|
|
|
|
Custom Authenticators
|
|
^^^^^^^^^^^^^^^^^^^^^
|
|
If you're using something other than Cassandra's ``PasswordAuthenticator``,
|
|
you may need to create your own subclasses of :class:`~.AuthProvider` and
|
|
:class:`~.Authenticator`. You can use :class:`~.PlainTextAuthProvider`
|
|
and :class:`~.PlainTextAuthenticator` as example implementations.
|
|
|
|
Protocol v1 Authentication
|
|
^^^^^^^^^^^^^^^^^^^^^^^^^^
|
|
When working with Cassandra 1.2 (or a higher version with
|
|
:attr:`~.Cluster.protocol_version` set to ``1``), you will not pass in
|
|
an :class:`~.AuthProvider` instance. Instead, you should pass a dict
|
|
of credentials with a ``username`` and ``password`` key:
|
|
|
|
.. code-block:: python
|
|
|
|
from cassandra.cluster import Cluster
|
|
|
|
credentials = {'username': 'joe', 'password': '1234'}
|
|
cluster = Cluster(auth_provider=credentials, protocol_version=1)
|
|
|
|
SSL
|
|
---
|
|
To enable SSL you will need to set :attr:`.Cluster.ssl_options` to a
|
|
dict of options. These will be passed as kwargs to ``ssl.wrap_socket()``
|
|
when new sockets are created. This should be used when client encryption
|
|
is enabled in Cassandra.
|
|
|
|
By default, a ``ca_certs`` value should be supplied (the value should be
|
|
a string pointing to the location of the CA certs file), and you probably
|
|
want to specify ``ssl_version`` as ``ssl.PROTOCOL_TLSv1`` to match
|
|
Cassandra's default protocol.
|
|
|
|
For example:
|
|
|
|
.. code-block:: python
|
|
|
|
from cassandra.cluster import Cluster
|
|
from ssl import PROTOCOL_TLSv1
|
|
|
|
ssl_opts = {'ca_certs': '/path/to/my/ca.certs',
|
|
'ssl_version': PROTOCOL_TLSv1}
|
|
cluster = Cluster(ssl_options=ssl_opts)
|
|
|
|
For further reading, Andrew Mussey has published a thorough guide on
|
|
`Using SSL with the DataStax Python driver <http://blog.amussey.com/post/64036730812/cassandra-2-0-client-server-ssl-with-datastax-python>`_.
|