A web frontend for the Chef server index
Project description
A web frontend for the Chef server index, displaying nodes, roles and environments, as well as data collected by Ohai plugins (in particular, installed package versions).
Installation
Install Sous-chef and Gunicorn with:
pip install 'sous-chef[deploy]'
Requirements
Requires Flask and PyChef. Gunicorn is the simplest method of deployment, but is not a requirement (allowing alternate WSGI servers to be used). Optionally uses Flask Debug Toolbar using the debug application.
Compatibility
Targets Python 2.6 and 2.7, due to the dependency on PyChef.
Usage
Run Sous-chef using Gunicorn:
gunicorn 'sous_chef:create_app()'
Configuration
Sous-chef will read it’s configuration from one of two places, depending on how it was installed:
# Global install /usr/var/sous_chef-instance/config.py # Virtualenv install $VIRTUALENV/var/sous_chef-instance/config.py
An example configuration file might look like this:
# The URL of the Chef server CHEF_URL = 'http://chef.example.com' # The client name and key to use CHEF_CLIENT = 'sous' CHEF_KEY = '/usr/var/sous_chef-instance/sous.pem'
If these are not set, PyChef’s autoconfigure function is used as a fallback, and will try and load it’s configuration from ~/.chef/knife.rb or /etc/chef/client.rb.
Package versions
Sous-chef will display package metadata from nodes if available. It expects this data to be in the following format:
"packages": {
"<package_type>": {
"<package_name>": {
"version": "<package_version"
},
...
},
...
}
For example, an RPM Ohai plugin could set the following node attributes:
"packages": {
"rpm": {
"package-one": {
"version": "0.1.0",
},
"package-two": {
"version": "2.0.1",
}
}
}
Debug mode
The application can be run in debug mode by using the create_debug_app function:
gunicorn 'sous_chef:create_debug_app()'
If the flask-debugtoolbar package is available, the DebugToolbar extension will be loaded and can be used to show debug information in a browser.
Contributing
Contributions are very welcome - issues and feature requests should use the github issue tracker, and pull requests should be made against the develop branch.
Issues are assigned tags of easy, medium and hard, giving some indication of how easy a feature request should be to implement or how hard a bug will be to fix. Fixes or implementations for any unassigned issues are welcome.
Bear in mind that new functionality should be useful for all users of the application - features that can only be used with internal components or that require significant infrastructure beyond a Chef server are unlikely to be approved (though are still open to discussion).
Code Style and Design
Python code should use the style from PEP8, and preferably pass all flake8 tests. Version numbers should use the Semantic Versioning specification.
As much functionality as possible should work ‘out of the box’ and run without needing explicit configuration - features that do require configuration to use should either fall back to an alternative or be off by default.
Optional integrations (such as the existing Flask DebugToolbar integration) should define requirements in extras_require instead of install_requires and ensure that they do not crash if the requirement is not present.
Licence
Sous-Chef is licensed under the MIT License.
This project includes copies of Bootstrap and jQuery, both of which are also licensed under the MIT Licence.
Copyright (c) 2014 DataSift <opensource@datasift.com>
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Authors
sous-chef was written by Sam Clements at DataSift.
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