Ohai detects data about your operating system. It can be used standalone, but it's primary purpose is to provide node data to Chef.
Ohai will print out a JSON data blob for all the known data about your system. When used with Chef, that data is reported back via node attributes.
Chef distributes ohai as a RubyGem. This README is for developers who want to modify the Ohai source code. For users who want to write plugins for Ohai, see the docs:
- General documentation: http://docs.opscode.com/ohai.html
- Custom plugin documentation: http://docs.opscode.com/ohai_custom.html
Before working on the code, if you plan to contribute your changes, you should read the contributing guidelines:
The basic process for contributing is:
- Fork this repo on GitHub.
- Create a feature branch for your work.
- Make your change, including tests.
- Submit a pull request.
Ohai's development dependencies should be installed with bundler. Just
bundle install in the root of the repo.
We use RSpec for unit/spec tests. To run the full suite, run:
bundle exec rake spec
You can run individual test files by running the rspec executable:
bundle exec rspec spec/unit/FILE.rb
Ohai has some Rake tasks for doing various things.
rake -T rake clobber_package # Remove package products rake gem # Build the gem file ohai-$VERSION.gem rake install # install the gem locally rake make_spec # create a gemspec file rake package # Build all the packages rake repackage # Force a rebuild of the package files rake spec # Run specs ($VERSION is the current version, from the GemSpec in Rakefile)
(Use the OHAI project)
Ohai - system information application
Author:: Adam Jacob (email@example.com) Copyright:: Copyright (c) 2008-2014 Chef Software, Inc. License:: Apache License, Version 2.0
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.