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How to Contribute
CoreOS projects are Apache 2.0 licensed and accept contributions via Github pull requests. This document outlines some of the conventions on commit message formatting, contact points for developers and other resources to make getting your contribution accepted.
Certificate of Origin
By contributing to this project you agree to the Developer Certificate of Origin (DCO). This document was created by the Linux Kernel community and is a simple statement that you, as a contributor, have the legal right to make the contribution.
Developer Certificate of Origin
Version 1.1
Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
660 York Street, Suite 102,
San Francisco, CA 94110 USA
Everyone is permitted to copy and distribute verbatim copies of this
license document, but changing it is not allowed.
Developer's Certificate of Origin 1.1
By making a contribution to this project, I certify that:
(a) The contribution was created in whole or in part by me and I
have the right to submit it under the open source license
indicated in the file; or
(b) The contribution is based upon previous work that, to the best
of my knowledge, is covered under an appropriate open source
license and I have the right under that license to submit that
work with modifications, whether created in whole or in part
by me, under the same open source license (unless I am
permitted to submit under a different license), as indicated
in the file; or
(c) The contribution was provided directly to me by some other
person who certified (a), (b) or (c) and I have not modified
it.
(d) I understand and agree that this project and the contribution
are public and that a record of the contribution (including all
personal information I submit with it, including my sign-off) is
maintained indefinitely and may be redistributed consistent with
this project or the open source license(s) involved.
Email and Chat
- Email: coreos-dev
- IRC: #coreos IRC channel on freenode.org
Getting Started
- Fork the repository on GitHub
- Read the README.md for build instructions
Contribution Flow
This is a rough outline of what a contributor's workflow looks like:
- Create a topic branch from where you want to base your work. This is usually master.
- Make commits of logical units.
- Make sure your commit messages are in the proper format, see below
- Push your changes to a topic branch in your fork of the repository.
- Submit a pull request
Thanks for you contributions!
Format of the Commit Message
We follow a rough convention for commit messages borrowed from Angularjs. This is an example of a commit:
feat(scripts/test-cluster): add a cluster test command
this uses tmux to setup a test cluster that you can easily kill and
start for debugging.
To make it more formal it looks something like this:
<type>(<scope>): <subject>
<BLANK LINE>
<body>
<BLANK LINE>
<footer>
The first line is the subject and should not be longer than 70 characters, the second line is always blank and other lines should be wrapped at 80 characters. This allows the message to be easier to read on github as well as in various git tools.
Subject Line
The subject line contains succinct description of the change.
Allowed
- feat (feature)
- fix (bug fix)
- docs (documentation)
- style (formatting, missing semi colons, …)
- refactor
- test (when adding missing tests)
- chore (maintain)
Allowed
Scopes could be anything specifying place of the commit change. For example store, api, etc.
More Details on Commits
For more details see the angularjs commit style guide.