Kyverno for Kubernetes

Kyverno for Kubernetes

The Nirmata team designed Kyverno for Kubernetes. Like Kubernetes, Kyverno adopts a declarative management paradigm. Kyverno policies are simply Kubernetes resources and do not require learning a new language. Kyverno works well with other existing Kubernetes developer tools, like kubectl, Kustomize, and Git.

Let's explore why Kubernetes configuration management can be perceived as complex and then discuss a Kubernetes native solution to address this complexity.

In their recent report Container Adoption In the Enterprise, Forrester found that 86% of IT leaders are prioritizing increasing container usage for developer agility and improved collaboration between IT operations teams and developers. However, the report also states:

Companies using container management platforms struggle with compliance (meeting industry regulations and enforcing policies) and portability (building and deploying across multiple cloud environments).

Let's explore why Kubernetes configuration management can be perceived as complex and then discuss a Kubernetes native solution to address this complexity.

Containers simplify application management by providing common packaging and runtimes for apps, independently of their programming language or the architecture of the application. Kubernetes has quickly become the de-facto standard for managing containers, with wide adoption across public and private cloud environments.

A key principle of Kubernetes is declarative configuration management. It’s important to understand what this means, so let’s briefly examine the core concepts.

In programming theory, there are two styles of programming languages: imperative and declarative. Imperative languages are ones where a programmer instructs the system exactly what to do next, and a program is a series of such instructions. Whereas in declarative programming, the programmer specifies the desired outcome and the system determines the best way to achieve the desired outcomes.

Similarly, system interfaces and configuring infrastructure and systems can follow either style. In an imperative interface, the operator tells the system how to perform a task. With a declarative interface, the operator tells the system what needs to be done, and the system determines the best way to perform the necessary tasks.

Kubernetes is declarative. Developers and operators specify the desired state and Kubernetes controllers will try and reconcile the current state with the desired state.

devops kubernetes

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