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Copyright 2011-2012 OpenStack Foundation
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All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License"); you may
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not use this file except in compliance with the License. You may obtain
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a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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License for the specific language governing permissions and limitations
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under the License.
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=============================================
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Setting up a Keystone development environment
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=============================================
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This document describes getting the source from keystone's `GitHub repository`_
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for development purposes.
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To install keystone from packaging, refer instead to Keystone's `User
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Documentation`_.
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.. _`GitHub Repository`: http://github.com/openstack/keystone
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.. _`User Documentation`: http://docs.openstack.org/
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Prerequisites
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=============
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This document assumes you are using:
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- Ubuntu 12.04, Fedora 15, or Mac OS X Lion
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- `Python 2.7`_
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.. _`Python 2.7`: http://www.python.org/
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And that you have the following tools available on your system:
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- git_
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- setuptools_
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- pip_
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**Reminder**: If you're successfully using a different platform, or a
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different version of the above, please document your configuration here!
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.. _git: http://git-scm.com/
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.. _setuptools: http://pypi.python.org/pypi/setuptools
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Getting the latest code
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=======================
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Make a clone of the code from our `Github repository`::
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$ git clone https://github.com/openstack/keystone.git
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When that is complete, you can::
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$ cd keystone
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Installing dependencies
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=======================
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Keystone maintains two lists of dependencies::
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requirements.txt
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test-requirements.txt
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The first is the list of dependencies needed for running keystone, the second list includes dependencies used for active development and testing of keystone itself.
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These dependencies can be installed from PyPi_ using the python tool pip_.
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.. _PyPi: http://pypi.python.org/
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.. _pip: http://pypi.python.org/pypi/pip
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However, your system *may* need additional dependencies that `pip` (and by
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extension, PyPi) cannot satisfy. These dependencies should be installed
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prior to using `pip`, and the installation method may vary depending on
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your platform.
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Ubuntu 12.04::
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$ sudo apt-get install python-dev libxml2-dev libxslt1-dev libsasl2-dev libsqlite3-dev libssl-dev libldap2-dev libffi-dev
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Fedora 15::
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$ sudo yum install python-sqlite2 python-lxml python-greenlet-devel python-ldap
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Mac OS X Lion (requires MacPorts_)::
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$ sudo port install py-ldap
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.. _MacPorts: http://www.macports.org/
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PyPi Packages and VirtualEnv
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----------------------------
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We recommend establishing a virtualenv to run keystone within. Virtualenv
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limits the python environment to just what you're installing as depdendencies,
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useful to keep a clean environment for working on Keystone. The tools directory
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in keystone has a script already created to make this very simple::
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$ python tools/install_venv.py
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This will create a local virtual environment in the directory ``.venv``.
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Once created, you can activate this virtualenv for your current shell using::
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$ source .venv/bin/activate
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The virtual environment can be disabled using the command::
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$ deactivate
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You can also use ``tools\with_venv.sh`` to prefix commands so that they run
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within the virtual environment. For more information on virtual environments,
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see virtualenv_.
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.. _virtualenv: http://www.virtualenv.org/
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If you want to run keystone outside of a virtualenv, you can install the
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dependencies directly into your system from the requires files::
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# Install the dependencies for running keystone
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$ pip install -r requirements.txt
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# Install the dependencies for developing, testing, and running keystone
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$ pip install -r test-requirements.txt
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# Use python setup.py to link Keystone into python's site-packages
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$ python setup.py develop
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Verifying Keystone is set up
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============================
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Once set up, either directly or within a virtualenv, you should be able to
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invoke python and import the libraries. If you're using a virtualenv, don't
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forget to activate it::
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$ source .venv/bin/activate
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$ python
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You should then be able to `import keystone` from your Python shell
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without issue::
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>>> import keystone
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>>>
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If you can import keystone successfully, you should be ready to move on to
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:doc:`developing`.
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Troubleshooting
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===============
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Eventlet segfaults on RedHat / Fedora
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-------------------------------------
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[*If this is no longer an issue, please remove this section, thanks!*]
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On some OSes, specifically Fedora 15, the current versions of
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greenlet/eventlet segfault when running keystone. To fix this, install
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the development versions of greenlet and eventlet::
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$ pip uninstall greenlet eventlet
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$ cd <appropriate working directory>
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$ hg clone https://bitbucket.org/ambroff/greenlet
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$ cd greenlet
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$ sudo python setup.py install
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$ cd <appropriate working directory>
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$ hg clone https://bitbucket.org/which_linden/eventlet
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$ cd greenlet
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$ sudo python setup.py install
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