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diff --git a/sites/www/installing.rst b/sites/www/installing.rst index 0ca9b156..a657c3fc 100644 --- a/sites/www/installing.rst +++ b/sites/www/installing.rst @@ -2,6 +2,8 @@ Installing ========== +.. _paramiko-itself: + Paramiko itself =============== @@ -14,50 +16,47 @@ via `pip <http://pip-installer.org>`_:: Users who want the bleeding edge can install the development version via ``pip install paramiko==dev``. -We currently support **Python 2.5/2.6/2.7**, with support for Python 3 coming -soon. Users on Python 2.4 or older are urged to upgrade. Paramiko *may* work on -Python 2.4 still, but there is no longer any support guarantee. +We currently support **Python 2.6, 2.7 and 3.3+** (Python **3.2** should also +work but has a less-strong compatibility guarantee from us.) Users on Python +2.5 or older are urged to upgrade. -Paramiko has two dependencies: the pure-Python ECDSA module ``ecdsa``, and the +Paramiko has two hard dependencies: the pure-Python ECDSA module ``ecdsa``, and the PyCrypto C extension. ``ecdsa`` is easily installable from wherever you obtained Paramiko's package; PyCrypto may require more work. Read on for details. -PyCrypto -======== - -`PyCrypto <https://www.dlitz.net/software/pycrypto/>`_ provides the low-level -(C-based) encryption algorithms we need to implement the SSH protocol. There -are a couple gotchas associated with installing PyCrypto: its compatibility -with Python's package tools, and the fact that it is a C-based extension. +If you need GSS-API / SSPI support, see :ref:`the below subsection on it +<gssapi>` for details on additional dependencies. -.. _pycrypto-and-pip: +.. _release-lines: -Possible gotcha on older Python and/or pip versions ---------------------------------------------------- +Release lines +------------- -We strongly recommend using ``pip`` to as it is newer and generally better than -``easy_install``. However, a combination of bugs in specific (now rather old) -versions of Python, ``pip`` and PyCrypto can prevent installation of PyCrypto. -Specifically: +Users desiring stability may wish to pin themselves to a specific release line +once they first start using Paramiko; to assist in this, we guarantee bugfixes +for the last 2-3 releases including the latest stable one. -* Python = 2.5.x -* PyCrypto >= 2.1 (required for most modern versions of Paramiko) -* ``pip`` < 0.8.1 +If you're unsure which version to install, we have suggestions: -When all three criteria are met, you may encounter ``No such file or -directory`` IOErrors when trying to ``pip install paramiko`` or ``pip install -PyCrypto``. +* **Completely new users** should always default to the **latest stable + release** (as above, whatever is newest / whatever shows up with ``pip + install paramiko``.) +* **Users upgrading from a much older version** (e.g. the 1.7.x line) should + probably get the **oldest actively supported line** (see the paragraph above + this list for what that currently is.) +* **Everybody else** is hopefully already "on" a given version and can + carefully upgrade to whichever version they care to, when their release line + stops being supported. -The fix is to make sure at least one of the above criteria is not met, by doing -the following (in order of preference): -* Upgrade to ``pip`` 0.8.1 or above, e.g. by running ``pip install -U pip``. -* Upgrade to Python 2.6 or above. -* Downgrade to Paramiko 1.7.6 or 1.7.7, which do not require PyCrypto >= 2.1, - and install PyCrypto 2.0.1 (the oldest version on PyPI which works with - Paramiko 1.7.6/1.7.7) +PyCrypto +======== +`PyCrypto <https://www.dlitz.net/software/pycrypto/>`_ provides the low-level +(C-based) encryption algorithms we need to implement the SSH protocol. There +are a couple gotchas associated with installing PyCrypto: its compatibility +with Python's package tools, and the fact that it is a C-based extension. C extension ----------- @@ -103,3 +102,31 @@ installation of Paramiko via ``pypm``:: Installing paramiko-1.7.8 Installing pycrypto-2.4 C:\> + + +.. _gssapi: + +Optional dependencies for GSS-API / SSPI / Kerberos +=================================================== + +In order to use GSS-API/Kerberos & related functionality, a couple of +additional dependencies are required (these are not listed in our ``setup.py`` +due to their infrequent utility & non-platform-agnostic requirements): + +* It hopefully goes without saying but **all platforms** need **a working + installation of GSS-API itself**, e.g. Heimdal. +* **All platforms** need `pyasn1 <https://pypi.python.org/pypi/pyasn1>`_ + ``0.1.7`` or better. +* **Unix** needs `python-gssapi <https://pypi.python.org/pypi/python-gssapi/>`_ + ``0.6.1`` or better. + + .. note:: This library appears to only function on Python 2.7 and up. + +* **Windows** needs `pywin32 <https://pypi.python.org/pypi/pywin32>`_ ``2.1.8`` + or better. + +.. note:: + If you use Microsoft SSPI for kerberos authentication and credential + delegation, make sure that the target host is trusted for delegation in the + active directory configuration. For details see: + http://technet.microsoft.com/en-us/library/cc738491%28v=ws.10%29.aspx |