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117 lines
4.5 KiB
Markdown
117 lines
4.5 KiB
Markdown
# 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
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of repetitive, low brain power work. This document attempts to describe these
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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 github's label feature
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We have added an automated [submit-queue]
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(https://github.com/kubernetes/contrib/blob/master/mungegithub/mungers/submit-queue.go)
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to the
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[github "munger"](https://github.com/kubernetes/contrib/tree/master/mungegithub)
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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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if retestPR(pr) == success {
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mergePR(pr)
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}
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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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The submit-queue lists what it believes are required on the [merge requirements tab](http://submit-queue.k8s.io/#/info) of the info page. That may be more up to date.
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A PR is considered "ready for merging" if it matches the following:
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* The PR must have the label "cla: yes" or "cla: human-approved"
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* The PR must be mergeable. aka cannot need a rebase
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* All of the following github statuses must be green
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* Jenkins GCE Node e2e
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* Jenkins GCE e2e
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* Jenkins unit/integration
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* The PR cannot have any prohibited future milestones (such as a v1.5 milestone during v1.4 code freeze)
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* The PR must have the "lgtm" label. The "lgtm" label is automatically applied
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following a review comment consisting of only "LGTM" (case-insensitive)
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* The PR must not have been updated since the "lgtm" label was applied
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* The PR must not have the "do-not-merge" label
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### Merge process
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Merges _only_ occur when the [critical builds](http://submit-queue.k8s.io/#/e2e)
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are passing. 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
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against races.
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If the PR has the `retest-not-required` label, it is simply merged. If the PR does
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not have this label the e2e, unit/integration, and node tests are re-run. If these
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tests pass a second time, the PR will be merged as long as the `critical builds` are
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green when this PR finishes retesting.
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## Github Munger
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We run [github "mungers"](https://github.com/kubernetes/contrib/tree/master/mungegithub).
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This runs repeatedly over github pulls and issues and runs modular "mungers"
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similar to "mungedocs." The mungers include the 'submit-queue' referenced above along
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with numerous other functions. See the README in the link above.
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Please feel free to unleash your creativity on this tool, send us new mungers
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that you think will help support the Kubernetes development process.
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### Closing stale pull-requests
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Github Munger will close pull-requests that don't have human activity in the
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last 90 days. It will warn about this process 60 days before closing the
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pull-request, and warn again 30 days later. One way to prevent this from
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happening is to add the "keep-open" label on the pull-request.
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Feel free to re-open and maybe add the "keep-open" label if this happens to a
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valid pull-request. It may also be a good opportunity to get more attention by
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verifying that it is properly assigned and/or mention people that might be
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interested. Commenting on the pull-request will also keep it open for another 90
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days.
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## PR builder
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We also run a robotic PR builder that attempts to run 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
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a message from a contributor that a PR is "ok to test", the contributor replies
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with that message. ("please" is optional, but remember to treat your robots with
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kindness...)
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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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PRs should only need to be manually re-tested if you believe there was a flake
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during the original test. All flakes should be filed as an
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[issue](https://github.com/kubernetes/kubernetes/issues?q=is%3Aopen+is%3Aissue+label%3Akind%2Fflake).
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Once you find or file a flake a contributer (this may be you!) should request
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a retest with "@k8s-bot test this issue: #NNNNN", where NNNNN is replaced with
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the issue number you found or filed.
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Any pushes of new code to the PR will automatically trigger a new test. No human
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interraction is required.
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<!-- BEGIN MUNGE: GENERATED_ANALYTICS -->
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[]()
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<!-- END MUNGE: GENERATED_ANALYTICS -->
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