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Merge pull request #23315 from david-mcmahon/relnotes-proposal
Automatic merge from submit-queue Release Notes proposal Get the conversation started. cc @eparis @vishh @davidopp @thockin @dchen1107 Ref #23070
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<!-- BEGIN MUNGE: UNVERSIONED_WARNING --> | ||
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<!-- BEGIN STRIP_FOR_RELEASE --> | ||
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<img src="http://kubernetes.io/img/warning.png" alt="WARNING" | ||
width="25" height="25"> | ||
<img src="http://kubernetes.io/img/warning.png" alt="WARNING" | ||
width="25" height="25"> | ||
<img src="http://kubernetes.io/img/warning.png" alt="WARNING" | ||
width="25" height="25"> | ||
<img src="http://kubernetes.io/img/warning.png" alt="WARNING" | ||
width="25" height="25"> | ||
<img src="http://kubernetes.io/img/warning.png" alt="WARNING" | ||
width="25" height="25"> | ||
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<h2>PLEASE NOTE: This document applies to the HEAD of the source tree</h2> | ||
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If you are using a released version of Kubernetes, you should | ||
refer to the docs that go with that version. | ||
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Documentation for other releases can be found at | ||
[releases.k8s.io](http://releases.k8s.io). | ||
</strong> | ||
-- | ||
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<!-- END STRIP_FOR_RELEASE --> | ||
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<!-- END MUNGE: UNVERSIONED_WARNING --> | ||
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# Kubernetes Release Notes | ||
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[djmm@google.com](mailto:djmm@google.com)<BR> | ||
Last Updated: 2016-3-25 | ||
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<!-- BEGIN MUNGE: GENERATED_TOC --> | ||
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- [Kubernetes Release Notes](#kubernetes-release-notes) | ||
- [Objective](#objective) | ||
- [Background](#background) | ||
- [The Problem](#the-problem) | ||
- [The (general) Solution](#the-general-solution) | ||
- [Then why not just list *every* change that was submitted, CHANGELOG-style?](#then-why-not-just-list-every-change-that-was-submitted-changelog-style) | ||
- [Options](#options) | ||
- [Collection Design](#collection-design) | ||
- [Publishing Design](#publishing-design) | ||
- [Location](#location) | ||
- [Layout](#layout) | ||
- [Alpha/Beta/Patch Releases](#alphabetapatch-releases) | ||
- [Major/Minor Releases](#majorminor-releases) | ||
- [Work estimates](#work-estimates) | ||
- [Caveats / Considerations](#caveats--considerations) | ||
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<!-- END MUNGE: GENERATED_TOC --> | ||
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## Objective | ||
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Define a process and design tooling for collecting, arranging and publishing | ||
release notes for Kubernetes releases, automating as much of the process as | ||
possible. | ||
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The goal is to introduce minor changes to the development workflow | ||
in a way that is mostly frictionless and allows for the capture of release notes | ||
as PRs are submitted to the repository. | ||
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This direct association of release notes to PRs captures the intention of | ||
release visibility of the PR at the point an idea is submitted upstream. | ||
The release notes can then be more easily collected and published when the | ||
release is ready. | ||
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## Background | ||
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### The Problem | ||
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Release notes are often an afterthought and clarifying and finalizing them | ||
is often left until the very last minute at the time the release is made. | ||
This is usually long after the feature or bug fix was added and is no longer on | ||
the mind of the author. Worse, the collecting and summarizing of the | ||
release is often left to those who may know little or nothing about these | ||
individual changes! | ||
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Writing and editing release notes at the end of the cycle can be a rushed, | ||
interrupt-driven and often stressful process resulting in incomplete, | ||
inconsistent release notes often with errors and omissions. | ||
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### The (general) Solution | ||
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Like most things in the development/release pipeline, the earlier you do it, | ||
the easier it is for everyone and the better the outcome. Gather your release | ||
notes earlier in the development cycle, at the time the features and fixes are | ||
added. | ||
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#### Then why not just list *every* change that was submitted, CHANGELOG-style? | ||
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On larger projects like Kubernetes, showing every single change (PR) would mean | ||
hundreds of entries. The goal is to highlight the major changes for a release. | ||
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## Options | ||
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1. Use of pre-commit and other local git hooks | ||
* Experiments here using `prepare-commit-msg` and `commit-msg` git hook files | ||
were promising but less than optimal due to the fact that they would | ||
require input/confirmation with each commit and there may be multiple | ||
commits in a push and eventual PR. | ||
1. Use of [github templates](https://github.com/blog/2111-issue-and-pull-request-templates) | ||
* Templates provide a great way to pre-fill PR comments, but there are no | ||
server-side hooks available to parse and/or easily check the contents of | ||
those templates to ensure that checkboxes were checked or forms were filled | ||
in. | ||
1. Use of labels enforced by mungers/bots | ||
* We already make great use of mungers/bots to manage labels on PRs and it | ||
fits very nicely in the existing workflow | ||
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## Collection Design | ||
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The munger/bot option fits most cleanly into the existing workflow. | ||
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The design will include: | ||
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1. New labels added to github: `release-note-none`, maybe others for new release note categories - see Layout section below | ||
1. A [new munger](https://github.com/kubernetes/kubernetes/issues/23409) that will: | ||
* Initiate a `release-note-needed` label on all new PRs | ||
* Block merge by the submit queue on all PRs labeled as `release-note-needed` | ||
* Auto-remove `release-note-needed` when one of the release-note-\* labels is added | ||
* Special case for cherry-picked/branch PRs, release-note-none is not allowed | ||
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## Publishing Design | ||
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### Location | ||
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With v1.2.0, the release notes were moved from their previous [github releases](https://github.com/kubernetes/kubernetes/releases) | ||
location to [CHANGELOG.md](../../CHANGELOG.md). Going forward this seems like a good plan. | ||
Other projects do similarly. | ||
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The kuberntes.tar.gz download link is also displayed along with the release notes | ||
in [CHANGELOG.md](../../CHANGELOG.md). | ||
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Is there any reason to continue publishing anything to github releases if | ||
the complete release story is published in [CHANGELOG.md](../../CHANGELOG.md)? | ||
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### Layout | ||
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Different types of releases will generally have different requirements in | ||
terms of layout. As expected, major releases like v1.2.0 are going | ||
to require much more detail than the automated release notes will provide. | ||
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The idea is that these mechanisms will provide 100% of the release note | ||
content for alpha, beta and most minor releases and bootstrap the content | ||
with a release note 'template' for the authors of major releases like v1.2.0. | ||
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The authors can then collaborate and edit the higher level sections of the | ||
release notes in a PR, updating [CHANGELOG.md](../../CHANGELOG.md) as needed. | ||
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v1.2.0 demonstrated the need, at least for major releases like v1.2.0, for | ||
several sections in the published release notes. | ||
In order to provide a basic layout for release notes in the future, | ||
new releases can bootstrap [CHANGELOG.md](../../CHANGELOG.md) with the following template types: | ||
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#### Alpha/Beta/Patch Releases | ||
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These are automatically generated from `release-note*` labels, but can be modified as needed. | ||
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``` | ||
Action Required | ||
* PR titles from the release-note-action-required label | ||
Other notable changes | ||
* PR titles from the release-note label | ||
``` | ||
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#### Major/Minor Releases | ||
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``` | ||
Major Themes | ||
* Add to or delete this section | ||
Other notable improvements | ||
* Add to or delete this section | ||
Experimental Features | ||
* Add to or delete this section | ||
Action Required | ||
* PR titles from the release-note-action-required label | ||
Known Issues | ||
* Add to or delete this section | ||
Provider-specific Notes | ||
* Add to or delete this section | ||
Other notable changes | ||
* PR titles from the release-note label | ||
``` | ||
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## Work estimates | ||
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* The [new munger](https://github.com/kubernetes/kubernetes/issues/23409) | ||
* Owner: @eparis | ||
* Time estimate: Mostly done | ||
* Updates to the tool that collects, organizes, publishes and sends release | ||
notifications. | ||
* Owner: @david-mcmahon | ||
* Time estimate: A few days | ||
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## Caveats / Considerations | ||
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* As part of the planning and development workflow how can we capture | ||
release notes for bigger features? | ||
[#23070](https://github.com/kubernetes/kubernetes/issues/23070) | ||
* For now contributors should simply use the first PR that enables a new | ||
feature by default. We'll revisit if this does not work well. | ||
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<!-- BEGIN MUNGE: GENERATED_ANALYTICS --> | ||
[![Analytics](https://kubernetes-site.appspot.com/UA-36037335-10/GitHub/docs/proposals/release-notes.md?pixel)]() | ||
<!-- END MUNGE: GENERATED_ANALYTICS --> |
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TeamCity OSS :: Kubernetes Mesos :: 4 - Smoke Tests Build 20241 outcome was SUCCESS
Summary: Tests passed: 1, ignored: 267 Build time: 00:04:43