A horizontal autoscaler for Kubernetes workloads, saving cloud costs by scaling workloads down after hours. This is a golang port and successor of the popular (py-)kube-downscaler with improvements and quality of life changes.

Documentation and Guides

The documentation and guides can be found on our website.

An offline copy of the documentation and blogs can be found in website/content and website/blog. In there are Markdown files which can be viewed in any text editor or inside of a Markdown Viewer.

Installation

Installation is done via the Helm Chart. Information on how to install the Downscaler is on our website.

Missing Features

GoKubeDownscaler is now GA. This means that the core py-kube-downscaler features are all present, though there’s a chance we might have missed something You can find a list of the known-missing features under the missing feature label. If you think that any other features are missing, or you have an idea for a new feature, feel free to open an Issue.

Developing

This section covers the basics of developing on this repo, a more detailed guide can be found on our website.

Please read the contribution manifest.

Cloning the Repository

git clone https://github.com/caas-team/GoKubeDownscaler.git
cd GoKubeDownscaler

Setting up Pre-Commit

brew install pre-commit
pre-commit install
brew install golangci-lint
brew install gofumpt

Testing the Downscaler

Running the Unit Tests

go test -v --cover ./...

Running the Downscaler Locally

The downscaler can be run locally by specifying a kubeconfig to use. The kubeconfig should have at least the permissions as the Helm Charts role.yaml. The downscaler will use the current-context in the kubeconfig.

go run -k=path/to/kubeconfig # ... additional configuration

Testing the Website

Installing Dependencies

npm install --prefix website

Running It Locally

npm run --prefix website start

after that the website is available on localhost:3000/GoKubeDownscaler