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https://github.com/artsy/hokusai

Artsy's Docker / Kubernetes CLI and Workflow
https://github.com/artsy/hokusai

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Artsy's Docker / Kubernetes CLI and Workflow

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## HOKUSAI [![CircleCI](https://circleci.com/gh/artsy/hokusai/tree/main.svg?style=svg)](https://circleci.com/gh/artsy/hokusai/tree/main)






Hokusai is a Docker + Kubernetes CLI for application developers.



Hokusai "dockerizes" applications and manages their lifecycle throughout development, testing, and release cycles.



Hokusai wraps calls to [Kubectl](https://kubernetes.io/), [Docker](https://www.docker.com/), [Docker-Compose](https://docs.docker.com/compose/) and [Git](https://git-scm.com/) with a CLI, and defines a CI workflow.



Hokusai currently only supports Kubernetes deployments on AWS, configured to pull from ECS container repositories (ECR), although other providers may be added in the future.



### Why Hokusai?



At [Artsy](http://www.artsy.net), as we began working with Kubernetes, while impressed with its design, capabilities, and flexibility, we were in need of tooling we could deliver to agile development teams that addressed the day-to-day tasks of application development, delivery, introspection and maintenance, while providing a clean and uncomplicated interface.



Transitioning teams to the Docker / Kubernetes ecosystem can be intimidating, and comes with a steep learning curve. We set out to create a Heroku-like CLI that would shepherd the application developer into the ecosystems of Docker and Kubernetes, and while introducing new tooling and concepts, outlining a clear practice for dependency management, local development, testing and CI, image repository structure, deployment and orchestration.



## Installation



### MacOS



We recommend installing via Homebrew:



```

$ brew update

$ brew tap artsy/formulas

$ brew install hokusai

```



If you previously installed Hokusai via an alternate installation method, you may need to force the `link` step.



```

$ brew link --overwrite hokusai

```



If you previously installed Hokusai via Pip, you may want to first uninstall it:



```

$ pip uninstall hokusai

```



### Linux



```

curl -sSL https://raw.githubusercontent.com/artsy/hokusai/main/get-hokusai.sh | sudo bash

```



Note: This method installs Hokusai to `/usr/local/bin/hokusai`.



### Pip



Hokusai can be installed via Pip, on MacOS or Linux. If you do so, please first go through [Pyenv](#Pyenv), [Python](#Python), and [Virtualenv](#Virtualenv) steps.



Python 3.7+ is required.



```

pip install hokusai

```



Note: If Pip fails at upgrading your system Python packages, try:



```

pip install hokusai --ignore-installed

```



### Docker



We also maintain [Hokusai Docker images](https://hub.docker.com/r/artsy/hokusai) for running Hokusai in Docker.



### Github



Release artifacts are available on [Github](https://github.com/artsy/hokusai/releases).



### AWS S3



Release artifacts are also available in AWS S3. You can use this [convenience script](get-hokusai.sh) or Curl to fetch them.



### A note on Python 2.x



Hokusai currently supports Python 3.7+ only. The last version that supported Python 2.x was [v0.5.18](https://github.com/artsy/hokusai/tree/v0.5.18).



## Setup



We assume that your org admin has already set up a Kubernetes cluster and an AWS infrastructure, and that your local environment has Git, Docker, and Docker-Compose installed. Perform the following steps to get Hokusai working:



1. Ensure your org admin has completed the steps mentioned in [Administering Hokusai](./docs/Administering_Hokusai.md).



2. Configure your local environment with [AWS credentials](https://boto3.amazonaws.com/v1/documentation/api/latest/guide/configuration.html#configuring-credentials).



3. Run [hokusai configure command](docs/Command_Reference.md#configuring-hokusai-for-your-organization).



4. Optionally, enable Bash autocompletion:



    ```

    eval "$(_HOKUSAI_COMPLETE=source hokusai)"

    ```



## Getting Started



Once Hokusai is configured, you can start using it on a project. Please see [Getting Started](./docs/Getting_Started.md).



## Command Reference



A full command reference can be found in [Command Reference](./docs/Command_Reference.md).



## Review Apps



Hokusai can be used to simplify the process of spinning up a "review app" instance of your project, based on a feature branch or pull request.



Full details are in the [Review App reference](./docs/Review_Apps.md).



## Hokusai Files



A descripton of all the [files used by Hokusai](docs/hokusai_files.md).



## Developing Hokusai



To work on Hokusai itself, please set up:



### Pyenv



We recommend using [Pyenv](https://github.com/pyenv/pyenv) to install the correct version of Python. For a tutorial of Pyenv, see [this guide](https://realpython.com/intro-to-pyenv/).



When installing on MacOS, please make sure to use brew-installed `openssl` and `readline` libraries, and xcode-installed `zlib` library. And make sure these libraries are correctly linked. Like so:



```

brew install openssl readline zlib



echo 'export PATH="/usr/local/opt/[email protected]/bin:$PATH"' >> ~/.bash_profile

echo 'export LDFLAGS="-L/usr/local/opt/[email protected]/lib"' >> ~/.bash_profile

echo 'export CPPFLAGS="-I/usr/local/opt/[email protected]/include"' >> ~/.bash_profile

echo 'export PKG_CONFIG_PATH="/usr/local/opt/[email protected]/lib/pkgconfig"' >> ~/.bash_profile

```



### Python



Hokusai is currently tested on Python 3.9.10 so we recommend using that Python version.



If you use Pyenv to install Python, you should see an output similar to this:



```

pyenv install 3.9.10



    python-build: use openssl from homebrew

    python-build: use readline from homebrew



    Downloading Python-3.9.10.tar.xz...

    -> https://www.python.org/ftp/python/3.9.10/Python-3.9.10.tar.xz

    Installing Python-3.9.10...

    python-build: use tcl-tk from homebrew

    python-build: use readline from homebrew

    python-build: use zlib from xcode sdk



    Installed Python-3.9.10 to $HOME/.pyenv/versions/3.9.10

```



With the desired Python version installed, activate it globally:



```

pyenv global 3.9.10

```



Note: If you want to create a PyInstaller distribution, Python must be installed with development libraries. Use the environment variable `PYTHON_CONFIGURE_OPTS="--enable-framework"` on Darwin and `PYTHON_CONFIGURE_OPTS="--enable-shared"` on Linux when running `pyenv install`.



### Virtualenv



We recommend using a virtual environment to isolate Hokusai's dependencies from that of other projects on your local environment.



The Pyenv install comes with [pyenv-virtualenv](https://github.com/pyenv/pyenv-virtualenv) which can be used to create virtual environments.



### Poetry



Use [Poetry](https://python-poetry.org/) to install Hokusai's dependencies as well as Hokusai itself in [editable mode](https://pip-python3.readthedocs.io/en/latest/reference/pip_install.html#editable-installs). Please see [this guide](https://python-poetry.org/docs/basic-usage/) for working with Poetry.



Install Poetry:



```

pip install poetry

```



Install dependencies and Hokusai in editable mode:



```

poetry install

```



To update dependencies:



```

poetry lock

```



## Testing



### Install Minikube



[Minikube](https://minikube.sigs.k8s.io/docs/start/) is used for integration tests.



```

brew install minikube

minikube start --kubernetes-version=

```



### Run tests



To run unit tests:



```

make test

```



To run integration tests:



```

make integration-local

```



Only specific modules, TestClasses, or even methods:



```

python -m unittest test.unit.test_module.TestClass.test_method

```



Tip: Set `DEBUG=1` environment variable to print boto logging



## Distributing Hokusai



### Beta Release



Merging a branch into `main` automatically creates a beta version useful for testing. A [script](./scripts/update_version_file.sh) that runs in CI automatically generates a Beta version number and writes it into [VERSION](./hokusai/VERSION) file. The version number is based on the combination of the latest canonical version found in [RELEASE_VERSION](./hokusai/RELEASE_VERSION) file and the latest Git commit in `main` branch. [VERSION](./hokusai/VERSION) file in version control has just a dummy number (e.g. 999.999.999).



To install the beta:



#### MacOS



```

$ brew uninstall hokusai

$ brew uninstall hokusai-beta

$ brew update

$ brew tap artsy/formulas

$ brew install hokusai-beta

```



#### Linux



```

curl -sSL https://raw.githubusercontent.com/artsy/hokusai/main/get-hokusai.sh | sudo bash -s beta

```



### Official Release



To create an official release, such as `v1.2.3`, perform the following:



- Create a branch named `prepare-v1.2.3` and make the following changes:

  - Bump canonical version in [RELEASE_VERSION](./hokusai/RELEASE_VERSION) file.

  - Upate [CHANGELOG](./CHANGELOG.md).

  - Open a PR to merge into `main`. Please see [past PRs](https://github.com/artsy/hokusai/pulls?q=is%3Apr+Release+is%3Aclosed+%22prepare+version%22) for example.



- [Open a PR](https://github.com/artsy/hokusai/compare/release...main?expand=1) to merge `main` into `release`. Please see [past PRs](https://github.com/artsy/hokusai/pulls?q=is%3Apr+is%3Aclosed+%22release+version%22) for example.



A CI [script](./scripts/update_version_file.sh) will copy the version in [RELEASE_VERSION](./hokusai/RELEASE_VERSION) file to [VERSION](./hokusai/VERSION) file.



## The Name



The project is named for the great Japanese artist [Katsushika Hokusai](https://www.artsy.net/article/artsy-editorial-7-things-hokusai-creator-great-wave) (1760-1849).



## About Artsy





  




This project is the work of engineers at [Artsy][footer_website], the world's

leading and largest online art marketplace and platform for discovering art.

One of our core [Engineering Principles][footer_principles] is being [Open

Source by Default][footer_open] which means we strive to share as many details

of our work as possible.



You can learn more about this work from [our blog][footer_blog] and by following

[@ArtsyOpenSource][footer_twitter] or explore our public data by checking out

[our API][footer_api]. If you're interested in a career at Artsy, read through

our [job postings][footer_jobs]!



[footer_website]: https://www.artsy.net/

[footer_principles]: https://github.com/artsy/README/blob/main/culture/engineering-principles.md

[footer_open]: https://github.com/artsy/README/blob/main/culture/engineering-principles.md

[footer_blog]: https://artsy.github.io/

[footer_twitter]: https://twitter.com/ArtsyOpenSource

[footer_api]: https://developers.artsy.net/

[footer_jobs]: https://www.artsy.net/jobs