hnc

The Hierarchical Namespace Controller (HNC)

[UPDATE MAY 2021] HNC has moved to its own repo: https://github.com/kubernetes-sigs/hierarchical-namespaces. This version of HNC is no longer being maintained; please visit the new repo for all future development.

$ kubectl hns create my-service -n my-team
$ kubectl hns tree my-team
my-team
└── my-service

Hierarchical namespaces make it easier to share your cluster by making namespaces more powerful. For example, you can create additional namespaces under your team's namespace, even if you don't have cluster-level permission to create namespaces, and easily apply policies like RBAC and Network Policies across all namespaces in your team (e.g. a set of related microservices).

Learn more in the HNC User Guide or get started with the instructions below!

Credits:

• Lead developer: @adrianludwin ([email protected])
• Current contributors: @yiqigao217, @rjbez17, @GinnyJI
• Other contributors include @sophieliu15, @lafh, @shivi28, @danielSbastos and @entro-pi - thanks all!

Using HNC

Getting started and learning more

The latest version of HNC available from this repo is v0.8.0. [UPDATED MAY 2021] Newer versions may be available at the new repo.

To install HNC on your cluster, and the kubectl-hns plugin on your workstation, follow the instructions on that page.

HNC is also supported by the following vendors:

• GKE: install via Config Sync
• Anthos: install via ACM

Once HNC is installed, you can try out the HNC quickstart to get an idea of what HNC can do. Or, feel free to dive right into the user guide instead.

Roadmap and issues

Please file issues - the more the merrier! Bugs will be investigated ASAP, while feature requests will be prioritized and assigned to a milestone or backlog.

HNC is not yet GA, so please be cautious about using it on clusters with config objects you can't afford to lose (e.g. that aren't stored in a Git repository).

All HNC issues are assigned to an HNC milestone. So far, the following milestones are defined or planned:

• Post v0.8: please visit the new repo
• v0.8 - COMPLETE APR 2021: incremental stability improvements
• v0.7 - COMPLETE DEC 2020: introduce exceptions.
• v0.6 - COMPLETE OCT 2020: introduce the v1alpha2 API and fully automated end-to-end testing.
• v0.5 - COMPLETE JUL 2020: feature simplification and improved testing and stability.
• v0.4 - COMPLETE JUN 2020: stabilize the API and add productionization features.
• v0.3 - COMPLETE APR 2020: type configuration and better self-service namespace UX.
• v0.2 - COMPLETE DEC 2019: contains enough functionality to be suitable for non-production workloads.
• v0.1 - COMPLETE NOV 2019: an initial release with all basic functionality so you can play with it, but not suitable for any real workloads.
• Backlog: all unscheduled work.

Contributing to HNC

HNC has moved to its own repo: https://github.com/kubernetes-sigs/hierarchical-namespaces. This version of HNC is no longer being maintained as of May 2021; please visit the new repo for all future development.