What is the architecture of Kubernetes controllers?

What is the architecture of Kubernetes controllers?

Kubernetes controllers are control loops that watch the state of your cluster and make or request changes where needed. They are part of the control plane and help manage the desired state of the system.

Can you explain how a controller works in Kubernetes?

Sure! A controller continuously monitors the state of a resource, compares it to the desired state, and takes action to reconcile the two. For example, if a pod goes down, the controller will create a new pod to replace it.

What are some common types of controllers in Kubernetes?

Common types of controllers include ReplicaSet, Deployment, StatefulSet, and Job controllers. Each serves a specific purpose in managing resources.

How do controllers interact with the Kubernetes API?

Controllers interact with the Kubernetes API to read the current state of resources and to make changes. They use the API to create, update, or delete resources as needed.