Why Kyverno

What is Kyverno?

Kyverno is a Policy Engine designed specifically for Kubernetes that is Kubernetes Native (i.e. it uses Kubernetes resources, patterns, and idioms) and enables the users to manage security and best practices in their Kubernetes Clusters. Kyverno differentiates from other Policy Managers by managing the Policies as Kubernetes resources because of which the users don’t have to take the headache of learning a new language in order to write policy....

Real World Problem with Kubernetes configurations

In this section we will discuss what are the real world problems with Kubernetes Cluster and why even the need of Kyverno immerged. So to create and work with Kubernetes Cluster we have tools like Kind, Minikube and Cloud Service Providers, and these tools are great in the sense that they help us bring up a Kubernetes cluster within minutes. If we have to do it ourselves it would take a lot of time since Kubernetes involves a lot of components but these tools provide an abstraction so that we can get something out of the box quickly and start working with it. But there’s a problem, as we said these tools provide an abstraction so that we can get a Cluster working quickly but that also means these tools assume a some set of default configurations and these default configurations are not always be secure. This makes using these default configurations OK for a local cluster but it is not a good practice to use the same set of default configurations in an production environment....

Why Kyverno

Declarative policies that are easy to write and manage Policy results that are easy to view and process Validate (audit or enforce), Mutate, Generate and verifylmages Support all Kubernetes resource types including CRs (Custom Resources) Adopt Kubernetes patterns and practices (e.g. labels and selectors, annotations, events, owner References, pod controllers, etc.)...

Kyverno Use cases

Enforcing Pod Security Standards Additional security validation and enforcement Fine-grained RBAC Multi-tenancy Auto-Labeling Sidecar (including certificate) injection with mounts, etc....

Alternatives to Kyverno

You may know that there are other general purpose Policy Managers since Policy management is not a concept only specific to Kubernetes, but these general purpose policy managers require learning a new language and may not be effective for people that are looking for Kubernetes native Policy managers. Open Policy Agent is one such example and Gatekeeper by Open Policy Agent is a particular implementation for Kubernetes but since these are general purpose policy managers and not Kubernetes native, they often require you to learn some language some new language (like Rego in the case of Open Policy Agent). With Kyverno, you don’t have to learn any new language, Kyverno does the heavy-lifting so that you can work with Kyverno just like you do with other Kubernetes components....

Kyverno Tutorial

In this tutorial we will show how you can use an example Kyverno policy to ensure that label named gfg is present on every Pod that is create otherwise the Pod won’t be created....

Advantages of Using Kyverno

1. Kubernetes Native – short learning curve...

Conclusion

Kyverno is a Policy Engine designed specifically for Kubernetes that is Kubernetes Native (i.e. it uses Kubernetes resources, patterns and idioms) and enables the users to manage security and best practices in their Kubernetes Clusters. Kyverno differentiates from other Policy Managers by managing the Policies as Kubernetes resources because of which the users don’t have to take the headache of learning a new language in order to write policy. To know more about Kyverno and some hands on practice, you can go to the official Kyverno docs. This marks the end of this article and we hope that this article helped you improve your understanding about Kyverno and policy management in Kubernetes....

Kyverno in Kubernetes – FAQ’s

What is the meaning of Kubernetes Native?...