Yusuke Kuoka

I have been co-maintaining helm-diff since 2019 and still keeping it. helm-diff has 1000+ stars and is used standalone or by other open source projects like helmwave and helmfile, supporting Kubernetes users who uses the famous Kubernetes package manager Helm world-wide.

Okra is a Kubernetes controller and a set of CRDs which provide advanced multi-cluster appilcation rollout capabilities, such as canary deployment of clusters. okra eases managing a lot of ephemeral Kubernetes clusters. If you've been using ephemeral Kubernetes clusters and employed blue-green or canary deployments for zero-downtime cluster updates, you might have suffered from a lot of manual steps required. okra is intended to automate all those steps.

I've been maintaining and leading the actions-runner-controller project for almost a year to help people leverage GitHub Actions self-hosted runners easily on their Kubernetes clusters. The project was started by the original author @summerwind. I've contributed a lot of fixes, documentation, features since then. I've led it to have a dedicated GitHub organization, one additional maintainer, too. We've succesfully made dozens of releases and apparently user base is still growing.

Helmfile is a tool to declaratively manage K8s resources. It has a lot of integrations for various secrets providers, clouds, and K8s deployment tools such as Kustomize and Helm. Many folks and companies have been using it in production as introduced in https://github.com/roboll/helmfile/blob/master/USERS.md. Although the repository is still owned by @roboll, I've been the primary maintainer of the project since 2018. I started contributing it even before I become the primary maintainer, and I'm still keeping it.