$ pip install fabric
You may also opt to use your operating system’s package manager; the package is
$ sudo apt-get install fabric
Advanced users wanting to install a development version may use
pip to grab
the latest master branch (as well as the dev version of the Paramiko
$ pip install paramiko==dev $ pip install fabric==dev
Any development installs of Fabric (whether via
-e) require the development version of Paramiko to be installed
beforehand, or Fabric’s installation may fail.
In order for Fabric’s installation to succeed, you will need four primary pieces of software:
- the Python programming language;
- the Python Paramiko SSH library;
- and Paramiko’s dependency, the PyCrypto cryptography library.
and, if using the parallel execution mode:
- the multiprocessing library.
If you’re using Paramiko 1.12 or above, you will also need an additional dependency for Paramiko:
- the ecdsa library
Please read on for important details on these – there are a few gotchas.
Fabric requires Python version 2.5 - 2.7. Some caveats and notes about other Python versions:
- We are not planning on supporting Python 2.4 given its age and the number of useful tools in Python 2.5 such as context managers and new modules. That said, the actual amount of 2.5-specific functionality is not prohibitively large, and we would link to – but not support – a third-party 2.4-compatible fork. (No such fork exists at this time, to our knowledge.)
- Fabric has not yet been tested on Python 3.x and is thus likely to be
incompatible with that line of development. However, we try to be at least
somewhat forward-looking (e.g. using
Setuptools comes with some Python installations by default; if yours doesn’t,
you’ll need to grab it. In such situations it’s typically packaged as
py25-setuptools or similar. Fabric may drop its
setuptools dependency in the future, or include alternative support for the
Distribute project, but for now setuptools is required for installation.
An optional dependency, the
multiprocessing library is included in Python’s
standard library in version 2.6 and higher. If you’re using Python 2.5 and want
to make use of Fabric’s parallel execution features
you’ll need to install it manually; the recommended route, as usual, is via
pip. Please see the multiprocessing PyPI page for details.
Early versions of Python 2.6 (in our testing, 2.6.0 through 2.6.2) ship
with a buggy
multiprocessing module that appears to cause Fabric to
hang at the end of sessions involving large numbers of concurrent hosts.
If you encounter this problem, either use env.pool_size / -z to limit the amount of concurrency, or upgrade to Python
Python 2.5 is unaffected, as it requires the PyPI version of
multiprocessing, which is newer than that shipped with Python <2.6.3.
If you are interested in doing development work on Fabric (or even just running the test suite), you may also need to install some or all of the following packages:
- git and Mercurial, in order to obtain some of the other dependencies below;
For an up-to-date list of exact testing/development requirements, including
version numbers, please see the
requirements.txt file included with the
source distribution. This file is intended to be used with
install -r requirements.txt.
To obtain a tar.gz or zip archive of the Fabric source code, you may visit
Fabric’s PyPI page, which offers manual
downloads in addition to being the entry point for
Source code checkouts¶
The Fabric developers manage the project’s source code with the Git DVCS. To follow Fabric’s development via Git instead of downloading official releases, you have the following options:
- Clone the canonical repository straight from the Fabric organization’s
repository on Github,
- Make your own fork of the Github repository by making a Github account, visiting fabric/fabric and clicking the “fork” button.
If you’ve obtained the Fabric source via source control and plan on
updating your checkout in the future, we highly suggest using
setup.py develop instead – it will use symbolic links instead of file
copies, ensuring that imports of the library or use of the command-line
tool will always refer to your checkout.
For information on the hows and whys of Fabric development, including which branches may be of interest and how you can help out, please see the Development page.
ActivePython and PyPM¶
Windows users who already have ActiveState’s ActivePython distribution installed
may find Fabric is best installed with its package manager, PyPM. Below is example output from an
installation of Fabric via
C:\> pypm install fabric The following packages will be installed into "%APPDATA%\Python" (2.7): paramiko-1.7.8 pycrypto-2.4 fabric-1.3.0 Get: [pypm-free.activestate.com] fabric 1.3.0 Get: [pypm-free.activestate.com] paramiko 1.7.8 Get: [pypm-free.activestate.com] pycrypto 2.4 Installing paramiko-1.7.8 Installing pycrypto-2.4 Installing fabric-1.3.0 Fixing script %APPDATA%\Python\Scripts\fab-script.py C:\>