Add development guide
This change moves the development guide from docs.airshipit.org/treasuremap to docs.airshipit.org. It also updates some content to reference Airship 2. Change-Id: Icb3474de2cd22e34221f62e1c0a228770fc89cd1 Signed-off-by: Drew Walters <andrew.walters@att.com>
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Develop Airship
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===============
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Welcome
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-------
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Thank you for your interest in Airship. Our community is eager to help you
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contribute to the success of our project and welcome you as a member of our
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community!
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We invite you to reach out to us at any time via the `Airship mailing list`_ or
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on our `Slack workspace`_.
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Welcome aboard!
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.. _Airship mailing list: http://lists.airshipit.org
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.. _Slack workspace: http://airshipit.org/slack
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Getting Started - Airship 2 Development
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---------------------------------------
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Development is underway on Airship 2: the educated evolution of Airship 1,
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designed with our experience using Airship in production. Airship 2 makes the
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Airship control plane ephemeral, leverages entrenched upstream projects such as
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the `Cluster API`_, `Metal Kubed`_, Kustomize_, and `kubeadm`_, and embraces
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Kubernetes Custom Resource Definitions (CRDs). To learn more about the Airship
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2.0 evolution, see the `Airship 2 evolution blog series`_.
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Each Airship 2 project has its own development guidelines. Join the ongoing Airship 2
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development by referencing the `airshipctl`_ or the `airshipui`_ documentation.
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.. _airshipctl: https://docs.airshipit.org/airshipctl/developers.html
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.. _Airship 2 evolution blog series: https://www.airshipit.org/blog/airship-blog-series-1-evolution-towards-2.0
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.. _airshipui: https://docs.airshipit.org/airshipui/developers.html
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.. _Cluster API: https://github.com/kubernetes-sigs/cluster-api
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.. _kubeadm: https://kubernetes.io/docs/reference/setup-tools/kubeadm/kubeadm
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.. _Kustomize: https://github.com/kubernetes-sigs/kustomize
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.. _Metal Kubed: https://metal3.io
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Getting Started - Airship 1 Development
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---------------------------------------
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Airship 1 is a collection of open source tools that automate cloud provisioning
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and management. Airship provides a declarative framework for defining and
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managing the life cycle of open infrastructure tools and the underlying
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hardware. These tools include OpenStack for virtual machines, Kubernetes for
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container orchestration, and MaaS for bare metal, with planned support for
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OpenStack Ironic.
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Improvements are still made Airship 1 daily, and we welcome additional
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contributors. We recommend that new contributors begin by reading the
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high-level architecture overview included in our `treasuremap`_ documentation.
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The architectural overview introduces each Airship component, their core
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responsibilities, and their integration points.
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.. _treasuremap: https://docs.airshipit.org/treasuremap
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Deep Dive
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~~~~~~~~~
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Each Airship component is accompanied by its own documentation that provides an
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extensive overview of the component. With so many components, it can be
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challenging to find a starting point.
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We recommend the following:
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Try an Airship environment
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~~~~~~~~~~~~~~~~~~~~~~~~~~
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Airship provides two single-node environments for demo and development purpose.
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`Airship-in-a-Bottle`_ is a set of reference documents and shell scripts that
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stand up a full Airship environment with the execution of a script.
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`Airskiff`_ is a light-weight development environment bundled with a set of
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deployment scripts that provides a single-node Airship environment. Airskiff
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uses minikube to bootstrap Kubernetes, so it does not include Drydock, MaaS, or
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Promenade.
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Additionally, we provide a reference architecture for easily deploying a
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smaller, demo site.
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`Airsloop`_ is a fully-authored Airship site that can be quickly deployed as a
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baremetal, demo lab.
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.. _Airship-in-a-Bottle: https://opendev.org/airship/in-a-bottle
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.. _Airskiff: https://docs.airshipit.org/treasuremap/airskiff.html
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.. _Airsloop: https://docs.airshipit.org/treasuremap/airsloop.html
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Focus on a component
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~~~~~~~~~~~~~~~~~~~~
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When starting out, focusing on one Airship component allows you to become
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intricately familiar with the responsibilities of that component and understand
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its function in the Airship integration. Because the components are modeled
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after each other, you will also become familiar with the same patterns and
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conventions that all Airship components use.
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Airship source code lives in the `OpenDev Airship namespace`_. To clone an
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Airship project, execute the following, replacing `<component>` with the name
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of the Airship component you want to clone.
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.. code-block bash::
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git clone https://opendev.org/airship/<component>.git
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Refer to the component's documentation to get started. A list of each
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component's documentation is listed below for reference:
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* `Armada`_
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* `Deckhand`_
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* `Divingbell`_
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* `Drydock`_
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* `Pegleg`_
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* `Promenade`_
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* `Shipyard`_
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.. _OpenDev Airship namespace: https://opendev.org/airship
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.. _Armada: https://airship-armada.readthedocs.io
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.. _Deckhand: https://airship-deckhand.readthedocs.io
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.. _Divingbell: https://airship-divingbell.readthedocs.io
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.. _Drydock: https://airship-drydock.readthedocs.io
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.. _Pegleg: https://airship-pegleg.readthedocs.io
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.. _Promenade: https://airship-promenade.readthedocs.io
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.. _Shipyard: https://airship-shipyard.readthedocs.io
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Testing Changes
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~~~~~~~~~~~~~~~
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Testing of Airship changes can be accomplished several ways:
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#. Standalone, single component testing
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#. Integration testing
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#. Linting, unit, and functional tests/linting
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.. note:: Testing changes to charts in Airship repositories is best
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accomplished using the integration method describe below.
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Standalone Testing
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~~~~~~~~~~~~~~~~~~
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Standalone testing of Airship components, i.e. using an Airship component as a
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Python project, provides the quickest feedback loop of the three methods and
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allows developers to make changes on the fly. We recommend testing initial code
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changes using this method to see results in real-time.
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Each Airship component written in Python has pre-requisites and guides for
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running the project in a standalone capacity. Refer to the documentation listed
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below.
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* `Armada`_
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* `Deckhand`_
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* `Drydock`_
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* `Pegleg`_
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* `Promenade`_
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* `Shipyard`_
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Integration Testing
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~~~~~~~~~~~~~~~~~~~
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While each Airship component supports individual usage, Airship components
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have several integration points that should be exercised after modifying
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functionality.
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We maintain several environments that encompass these integration points:
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#. `Airskiff`_: Integration of Armada, Deckhand, Shipyard, and Pegleg
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#. `Airship-in-a-Bottle Multinode`: Full Airship integration
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For changes that merely impact software delivery components, exercising a full
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Airskiff deployment is often sufficient. Otherwise, we recommend using the
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Airship-in-a-Bottle Multinode environment.
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Each environment's documentation covers the process required to build and test
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component images.
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.. _Airskiff: https://docs.airshipit.org/treasuremap/airskiff.html
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.. _Airship-in-a-Bottle Multinode: http://git.openstack.org/cgit/openstack/
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airship-in-a-bottle/tree/tools/multi_nodes_gate/README.rst
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Final Checks
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~~~~~~~~~~~~
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Airship projects provide Makefiles to run unit, integration, and functional
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tests as well as lint Python code for PEP8 compliance and Helm charts for
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successful template rendering. All checks are gated by Zuul before a change can
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be merged. For more information on executing these checks, refer to
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project-specific documentation.
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Third party CI tools, such as Jenkins, report results on Airship-in-a-Bottle
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patches. These can be exposed using the "Toggle CI" button in the bottom
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left-hand page of any gerrit change.
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Pushing code
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~~~~~~~~~~~~
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Airship uses the `OpenDev gerrit`_ for code review. Refer to the `OpenStack
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Contributing Guide`_ for a tutorial on submitting changes to Gerrit code
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review.
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.. _OpenDev gerrit: https://review.opendev.org
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.. _OpenStack Contributing Guide: https://docs.openstack.org/horizon/latest/contributor/contributing.html
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Next steps
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~~~~~~~~~~
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Upon pushing a change to gerrit, Zuul continuous integration will post job
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results on your patch. Refer to the job output by clicking on the job itself to
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determine if further action is required. If it's not clear why a job failed,
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please reach out to a team member in IRC. We are happy to assist!
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Assuming all continuous integration jobs succeed, Airship community members and
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core developers will review your patch and provide feedback. Many patches are
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submitted to Airship projects each day. If your patch does not receive feedback
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for several days, please reach out using IRC or the Airship mailing list.
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Merging code
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~~~~~~~~~~~~
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Like most OpenDev projects, Airship patches require two +2 code review votes
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from core members to merge. Once you have addressed all outstanding feedback,
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your change will be merged.
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Beyond
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~~~~~~
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Congratulations! After your first change merges, please keep up-to-date with
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the team. We hold two weekly meetings for project and design discussion:
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Our weekly #airshipit IRC meeting provides an opportunity to discuss project
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operations.
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Our weekly design call provides an opportunity for in-depth discussion of new
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and existing Airship features.
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For more information on the times of each meeting, refer to the `Airship
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wiki`_.
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.. _Airship wiki: https://wiki.openstack.org/wiki/Airship
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.. toctree::
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:hidden:
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:maxdepth: 3
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getting-started
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