capsule
gatekeeper-library
capsule | gatekeeper-library | |
---|---|---|
5 | 8 | |
1,476 | 609 | |
2.8% | 1.5% | |
9.3 | 8.8 | |
1 day ago | 10 days ago | |
Go | Open Policy Agent | |
Apache License 2.0 | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
capsule
-
Multi-tenancy in Kubernetes
Capsule
-
How we reduced Kubernetes Clusters Sprawl by adopting Vclusters: An Introduction
At the end is just a tool which helps to achieve multi tenancy(with all pros and cons) in Kubernetes. It takes a different approach from capsule for example as you have a dedicated control plane for each tenant which means you have an isolated api server that you can spin up in a matter of seconds and lets you also achieve better resource utilizations by using the same nodes shared among all tenants
- Is it anti-pattern to have multiple environments under a single namespace?
-
k8s based platform
For multi tenancy you could use this: https://github.com/clastix/capsule
- RBAC for developer self-service?
gatekeeper-library
-
Multi-tenancy in Kubernetes
Here is a library or rules for the Open Policy Agent.
- open-policy-agent/gatekeeper-library: The OPA Gatekeeper policy library.
-
Security scanning of k8s manifest files vs running cluster
https://github.com/open-policy-agent/gatekeeper-library is the library of OPA Gatekeeper policies.
- OPA Rego is ridiculously confusing - best way to learn it?
-
Container security best practices: Comprehensive guide
Many more examples are available in the OPA Gatekeeper library project!
-
Expose Open Policy Agent/Gatekeeper Constraint Violations for Kubernetes Applications with Prometheus and Grafana
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
-
Who is doing image scanning on an admission controller? (Open source)
Gatekeeper library has example policies for restricting image repositories: https://github.com/open-policy-agent/gatekeeper-library/tree/master/library/general
-
Mental models for understanding Kubernetes Pod Security Policy PSP
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)
What are some alternatives?
vcluster - vCluster - Create fully functional virtual Kubernetes clusters - Each vcluster runs inside a namespace of the underlying k8s cluster. It's cheaper than creating separate full-blown clusters and it offers better multi-tenancy and isolation than regular namespaces.
OPA (Open Policy Agent) - Open Policy Agent (OPA) is an open source, general-purpose policy engine.
kiosk - kiosk 🏢 Multi-Tenancy Extension For Kubernetes - Secure Cluster Sharing & Self-Service Namespace Provisioning
opa-scorecard
kamaji - Kamaji is the Hosted Control Plane Manager for Kubernetes.
helm-charts - Prometheus community Helm charts
hierarchical-namespaces - Home of the Hierarchical Namespace Controller (HNC). Adds hierarchical policies and delegated creation to Kubernetes namespaces for improved in-cluster multitenancy.
conftest - Write tests against structured configuration data using the Open Policy Agent Rego query language
kubeplus - Kubernetes Operator to create Kubernetes-native APIs from Helm charts for multi-instance SaaS
tfsec - Security scanner for your Terraform code
loft - Namespace & Virtual Cluster Manager for Kubernetes - Lightweight Virtual Clusters, Self-Service Provisioning for Engineers and 70% Cost Savings with Sleep Mode
opa-image-scanner - Kubernetes Admission Controller for Image Scanning using OPA