kiosk VS gatekeeper-library

Kiosk

Have a look at https://github.com/loft-sh/kiosk and maybe the paid version https://loft.sh/

As for the open source projects, maybe you would find Kiosk for allowing self-service namespace creation, namespace templates and cross-namespace resource limits and quotas.

# Install kiosk with helm v3 ❯ kubectl create namespace kiosk helm install kiosk --repo https://charts.devspace.sh/ kiosk --namespace kiosk --atomic namespace/kiosk created NAME: kiosk ... Learn more about using kiosk here: https://github.com/loft-sh/kiosk#getting-started #verify ❯ kubectl get pod -n kiosk NAME READY STATUS RESTARTS AGE kiosk-66dbfcf6db-5rfx2 1/1 Running 0 2m18s

Kubernetes was designed as a single-tenant platform. Sharing clusters, though, offers greater flexibility, simplifies infrastructure, and improves cost-efficiency. Therefore, it makes sense to use a multi-tenant system. To keep tenants separate and prevent compromised tenants from affecting others, you can use role-based access control (RBAC) or namespaces. Tools that assist with multi-tenancy in Kubernetes include kiosk and loft.

For simple environments I'm using klum, for bigger environments I'm using OIDC with Keycloak. Beside that kiosk also looks interesting.

https://github.com/loft-sh/kiosk (from makers of loft)

Here is a library or rules for the Open Policy Agent.

https://github.com/open-policy-agent/gatekeeper-library is the library of OPA Gatekeeper policies.

Many more examples are available in the OPA Gatekeeper library project!

by default and exposes metrics on path ```/metrics``` . It can run locally on your development box as long as you have a valid Kubernetes configuration in your home folder (i.e. if you can run kubectl and have the right permissions). When running on the cluster a ```incluster``` parameter is passed in so that it knows where to look up for the cluster credentials. Exporter program connects to Kubernetes API every 10 seconds to scrape data from Kubernetes API. We've used [this](https://medium.com/teamzerolabs/15-steps-to-write-an-application-prometheus-exporter-in-go-9746b4520e26) blog post as the base for the code. ## Demo Let's go ahead and prepare our components so that we have a Grafana dashboard to show us which constraints have been violated and how the number of violations evolve over time. ### 0) Required tools - [Git](https://git-scm.com/downloads): A git cli is required to checkout the repo and - [Kubectl](https://kubernetes.io/docs/tasks/tools/) and a working K8S cluster - [Ytt](https://carvel.dev/ytt/): This is a very powerful yaml templating tool, in our setup it's used for dynamically overlaying a key/value pair in all constraints. It's similar to Kustomize, it's more flexibel than Kustomize and heavily used in some [Tanzu](https://tanzu.vmware.com/tanzu) products. - [Kustomize](https://kustomize.io/): Gatekeeper-library relies on Kustomize, so we need it too. - [Helm](https://helm.sh/): We will install Prometheus and Grafana using helm - Optional: [Docker](https://www.docker.com/products/docker-desktop): Docker is only optional as we already publish the required image on dockerhub. ### 1) Git submodule update Run ```git submodule update --init``` to download gatekeeper-library dependency. This command will download the [gatekeeper-library](https://github.com/open-policy-agent/gatekeeper-library) dependency into folder ```gatekeeper-library/library``` . ### 2) Install OPA/Gatekeeper If your K8S cluster does not come with Gatekeeper preinstalled, you can use install it as explained [here](https://open-policy-agent.github.io/gatekeeper/website/docs/install/). If you are familiar with helm, the easiest way to install is as follows: ```bash helm repo add gatekeeper https://open-policy-agent.github.io/gatekeeper/charts helm install gatekeeper/gatekeeper --generate-name

Gatekeeper library has example policies for restricting image repositories: https://github.com/open-policy-agent/gatekeeper-library/tree/master/library/general

You should check out the Gatekeeper project. There's plenty of templates available for use without having to write a single line of rego for most use cases (e.g https://github.com/open-policy-agent/gatekeeper-library)