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Add "Build OKD-on-FCOS in Prow" proposal
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| title: Build OKD-on-Fedora-CoreOS in Prow | ||
| authors: | ||
| - "@LorbusChris" | ||
| reviewers: | ||
| - "@abhinavdahiya" | ||
| - "@ashcrow" | ||
| - "@cgwalters" | ||
| - "@crawford" | ||
| - "@darkmuggle" | ||
| - "@miabbott" | ||
| - "@runcom" | ||
| - "@sdodson" | ||
| - "@smarterclayton" | ||
| - "@staebler" | ||
| - "@vrutkovs" | ||
| approvers: | ||
| creation-date: 2019-10-21 | ||
| last-updated: 2020-12-17 | ||
| status: provisional|implementable|implemented|deferred|rejected|withdrawn|replaced | ||
| see-also: | ||
| replaces: | ||
| superseded-by: | ||
| --- | ||
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| # Build OKD-on-Fedora-CoreOS in Prow | ||
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| ## Release Signoff Checklist | ||
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| - [ ] Enhancement is `implementable` | ||
| - [ ] Design details are appropriately documented from clear requirements | ||
| - [ ] Test plan is defined | ||
| - [ ] Graduation criteria for dev preview, tech preview, GA | ||
| - [ ] User-facing documentation is created in [openshift/docs] | ||
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| ## Summary | ||
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| OKD is the OpenShift community distribution of Kubernetes. | ||
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| As part of the version 4 effort, the OKD working group has decided to target Fedora CoreOS (FCOS) as the primary base operating system for OKD control plane and worker nodes. | ||
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| This document contains a proposal to add missing FCOS support to key components, | ||
| create OKD artifacts in OpenShift's Prow instance from the canonical OpenShift master and release branches alongside OCP CI artifacts, | ||
| and regularily create OKD release payloads from there. | ||
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| ## Motivation | ||
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| The OKD Working Group wants to deliver a community variant of OpenShift on top of Fedora CoreOS | ||
| that is released off of the latest OpenShift stable release branch in a rolling manner, | ||
| and provides the ability to update. An update release payload for OKD encapsulates a new release of the underlying operating system | ||
| as well as new releases of the cluster components. | ||
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| ### Goals | ||
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| The goals are to achieve OKD 4 builds in Prow, based on Fedora CoreOS and the current OpenShift codebase, and promotion of rolling releases from there, | ||
| as well as facilitation of community participation, adoption, feedback and knowledge sharing. | ||
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| ### Non-Goals | ||
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| This enhancement does not concern itself with the releases of optional operators for OKD via OperatorHub. | ||
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| ## Proposal | ||
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| This is a proposal to: | ||
| - Build OKD artifacts in OpenShift's Prow instance from the canonical OpenShift master branch and at least the latest release branch for continuous testing. | ||
| - Release OKD payloads built in and promoted from Prow from the latest release branch regularly, i.e. every 2 weeks. | ||
| - Support Fedora CoreOS as base OS in key OpenShift componentes (`machine-config-operator` and `installer`) so OKD releases can be made without requiring forked codebases. | ||
| - Provide easy-to-access ways for community members to participate: | ||
| - by providing a repository with bug report templates | ||
| - by encouraging and directing community contributors to send patches and bug fixes directly to the upstream OpenShift codebase | ||
| - create documentation and share knowledge about OKD | ||
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| ### Graduation Criteria | ||
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| - [x] [OKD repository](https://github.com/openshift/okd/) exists for community issue and bug triage, and development tracking. | ||
| - [x] The UBI-based container images for all components in the release payload are shared between OKD and OCP for testing in Prow (with a few exceptions, see below) | ||
| - [x] OKD build and release jobs are added to `openshift/release` | ||
| - [x] Fedora RPM- and FCOS ostree-based `machine-os-content` container images are built continuously from the [`openshift/okd-machine-os`](https://github.com/openshift/okd-machine-os/) repository, with promotion gating for each minor version release stream. | ||
| - [x] Mirror OKD release payloads from the internal registry to quay.io | ||
| - [x] Support and end-to-end CI testing is added for running `machine-config-operator`, and the `machine-config-daemon` on FCOS-based OKD clusters. | ||
| - [x] `machine-config-operator` sources do not require a fork to be built for OKD | ||
| - [x] Support and end-to-end CI testing is added for building OKD installer binaries | ||
| - [ ] `openshift-install` sources do not require a fork to be built for OKD: ([Pull Request](https://github.com/openshift/installer/pull/4453)) | ||
| - [x] All container images that are part of `cluster-samples` and `marketplace` operators are continuously available as either Fedora, CentOS or UBI-based container images. | ||
| - [ ] All container images that are part of `baremetal-operator` are continuously available as either Fedora, CentOS or UBI-based container images. ([okd#197](https://github.com/openshift/okd/issues/197), [ironic-image#123](https://github.com/openshift/ironic-image/pull/123), [ironic-ipa-downloader#56](https://github.com/openshift/ironic-image/pull/123)) | ||
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| ## Infrastructure Needed [optional] | ||
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| - Limited Prow CI compute on all platforms for end-to-end testing | ||
| - Storage and/or registries for CI artifacts (RPMs, machine-os-content containers, and operator containers) |