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CONTRIBUTING.md

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Contributing to ceph-ansible

  1. Follow the commit guidelines

Commit guidelines

  • All commits should have a subject and a body
  • The commit subject should briefly describe what the commit changes
  • The commit body should describe the problem addressed and the chosen solution
    • What was the problem and solution? Why that solution? Were there alternative ideas?
  • Wrap commit subjects and bodies to 80 characters
  • Sign-off your commits
  • Add a best-effort scope designation to commit subjects. This could be a directory name, file name, or the name of a logical grouping of code. Examples:
    • library: add a placeholder module for the validate action plugin
    • site.yml: combine validate play with fact gathering play
    • rhcs: bump version to 3.0 for stable 3.1
  • Commits linked with an issue should trace them with :
    • Fixes: #2653

Suggested reading: https://chris.beams.io/posts/git-commit/

CI

Jenkins

We use Jenkins to run several tests on each pull request.

If you don't want to run a build for a particular pull request, because all you are changing is the README for example, add the text [skip ci] to the PR title.

Good to know

Sample files

The sample files we provide in group_vars/ are versionned, they are a copy of what their respective ./roles/<role>/defaults/main.yml contain.

It means if you are pushing a patch modifying one of these files:

  • ./roles/ceph-mds/defaults/main.yml
  • ./roles/ceph-mgr/defaults/main.yml
  • ./roles/ceph-fetch-keys/defaults/main.yml
  • ./roles/ceph-rbd-mirror/defaults/main.yml
  • ./roles/ceph-agent/defaults/main.yml
  • ./roles/ceph-defaults/defaults/main.yml
  • ./roles/ceph-osd/defaults/main.yml
  • ./roles/ceph-nfs/defaults/main.yml
  • ./roles/ceph-client/defaults/main.yml
  • ./roles/ceph-common/defaults/main.yml
  • ./roles/ceph-iscsi-gw/defaults/main.yml
  • ./roles/ceph-mon/defaults/main.yml
  • ./roles/ceph-rgw/defaults/main.yml
  • ./roles/ceph-container-common/defaults/main.yml
  • ./roles/ceph-common-coreos/defaults/main.yml

You will have to get the corresponding sample file updated, there is a script which do it for you. You must run ./generate_group_vars_sample.sh before you commit your changes so you are guaranteed to have consistent content for these files.

Keep your branch up-to-date

Sometimes, a pull request can be subject to long discussion, reviews and comments, meantime, master moves forward so let's try to keep your branch rebased on master regularly to avoid huge conflict merge. A rebased branch is more likely to be merged easily & shorter.

Organize your commits

Do not split your commits unecessary, we are used to see pull request with useless additional commits like "I'm addressing reviewer's comments". So, please, squash and/or amend them as much as possible.

Similarly, split them when needed, if you are modifying several parts in ceph-ansible or pushing a large patch you may have to split yours commit properly so it's better to understand your work. Some recommandations:

  • 1 fix = 1 commit,
  • do not mix multiple topics in a single commit,
  • if you PR contains a large number of commits that are each other totally unrelated, it should probably even be split in several PRs.