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139 lines
5.3 KiB
Markdown
139 lines
5.3 KiB
Markdown
<!-- 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"
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width="25" height="25">
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<img src="http://kubernetes.io/img/warning.png" alt="WARNING"
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width="25" height="25">
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<img src="http://kubernetes.io/img/warning.png" alt="WARNING"
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width="25" height="25">
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<img src="http://kubernetes.io/img/warning.png" alt="WARNING"
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width="25" height="25">
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<img src="http://kubernetes.io/img/warning.png" alt="WARNING"
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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
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refer to the docs that go with that version.
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<strong>
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The latest 1.0.x release of this document can be found
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[here](http://releases.k8s.io/release-1.0/docs/devel/automation.md).
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Documentation for other releases can be found at
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[releases.k8s.io](http://releases.k8s.io).
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</strong>
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--
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<!-- END STRIP_FOR_RELEASE -->
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<!-- END MUNGE: UNVERSIONED_WARNING -->
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# Kubernetes Development Automation
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## Overview
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Kubernetes uses a variety of automated tools in an attempt to relieve developers of repeptitive, low
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brain power work. This document attempts to describe these processes.
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## Submit Queue
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In an effort to
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* reduce load on core developers
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* maintain e2e stability
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* load test githubs label feature
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We have added an automated [submit-queue](https://github.com/kubernetes/contrib/tree/master/submit-queue)
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for kubernetes.
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The submit-queue does the following:
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```go
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for _, pr := range readyToMergePRs() {
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if testsAreStable() {
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mergePR(pr)
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}
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}
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```
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The status of the submit-queue is [online.](http://submit-queue.k8s.io/)
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### Ready to merge status
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A PR is considered "ready for merging" if it matches the following:
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* it has the `lgtm` label, and that `lgtm` is newer than the latest commit
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* it has passed the cla pre-submit and has the `cla:yes` label
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* it has passed the travis and shippable pre-submit tests
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* one (or all) of
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* its author is in kubernetes/contrib/submit-queue/whitelist.txt
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* its author is in contributors.txt via the github API.
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* the PR has the `ok-to-merge` label
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* One (or both of)
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* it has passed the Jenkins e2e test
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* it has the `e2e-not-required` label
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Note that the combined whitelist/committer list is available at [submit-queue.k8s.io](http://submit-queue.k8s.io)
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### Merge process
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Merges _only_ occur when the `critical builds` (Jenkins e2e for gce, gke, scalability, upgrade) are passing.
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We're open to including more builds here, let us know...
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Merges are serialized, so only a single PR is merged at a time, to ensure against races.
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If the PR has the `e2e-not-required` label, it is simply merged.
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If the PR does not have this label, e2e tests are re-run, if these new tests pass, the PR is merged.
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If e2e flakes or is currently buggy, the PR will not be merged, but it will be re-run on the following
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pass.
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## Github Munger
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We also run a [github "munger"](https://github.com/kubernetes/contrib/tree/master/mungegithub)
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This runs repeatedly over github pulls and issues and runs modular "mungers" similar to "mungedocs"
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Currently this runs:
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* blunderbuss - Tries to automatically find an owner for a PR without an owner, uses mapping file here:
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https://github.com/kubernetes/contrib/blob/master/mungegithub/blunderbuss.yml
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* needs-rebase - Adds `needs-rebase` to PRs that aren't currently mergeable, and removes it from those that are.
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* size - Adds `size/xs` - `size/xxl` labels to PRs
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* ok-to-test - Adds the `ok-to-test` message to PRs that have an `lgtm` but the e2e-builder would otherwise not test due to whitelist
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* ping-ci - Attempts to ping the ci systems (Travis/Shippable) if they are missing from a PR.
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* lgtm-after-commit - Removes the `lgtm` label from PRs where there are commits that are newer than the `lgtm` label
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In the works:
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* issue-detector - machine learning for determining if an issue that has been filed is a `support` issue, `bug` or `feature`
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Please feel free to unleash your creativity on this tool, send us new mungers that you think will help support the Kubernetes development process.
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## PR builder
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We also run a robotic PR builder that attempts to run e2e tests for each PR.
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Before a PR from an unknown user is run, the PR builder bot (`k8s-bot`) asks to a message from a
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contributor that a PR is "ok to test", the contributor replies with that message. Contributors can also
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add users to the whitelist by replying with the message "add to whitelist" ("please" is optional, but
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remember to treat your robots with kindness...)
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If a PR is approved for testing, and tests either haven't run, or need to be re-run, you can ask the
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PR builder to re-run the tests. To do this, reply to the PR with a message that begins with `@k8s-bot test this`, this should trigger a re-build/re-test.
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## FAQ:
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#### How can I ask my PR to be tested again for Jenkins failures?
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Right now you have to ask a contributor (this may be you!) to re-run the test with "@k8s-bot test this"
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### How can I kick Shippable to re-test on a failure?
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Right now the easiest way is to close and then immediately re-open the PR.
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<!-- BEGIN MUNGE: GENERATED_ANALYTICS -->
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[]()
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<!-- END MUNGE: GENERATED_ANALYTICS -->
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