Kubernetes Controller for Foo Resources

This project demonstrates a Kubernetes controller written in Go that manages custom resources (Foo resources) and their associated Deployments in a Kubernetes cluster.

Overview

The controller watches for changes to Foo resources and ensures that corresponding Deployment objects are created, updated, or deleted based on the spec.replicas field of the Foo resource.

Features:

• Automatically creates or updates a Deployment when a Foo resource is added or updated.
• Deletes the associated Deployment when a Foo resource is deleted.
• Uses Kubernetes client-go library for interacting with Kubernetes APIs.
• Utilizes dynamic client and informers for handling custom resources.

Prerequisites

• Kubernetes cluster (local or remote).
• kubectl configured to communicate with your cluster.
• Go programming language (if building or modifying the controller).
• Docker (if containerizing the controller).

Installation and Setup

1. Clone the repository:

   git clone git@github.com:Rahul1804/sample-controller.git
   cd sample-controller
   

2. Create the CRD

   kubectl apply -f foo-crd.yaml
   

3. Run the program

   go run main.go --kubeconfig=/Users/rmishra/.kube/config
   

4. Create a foo resource to see the magic

   kubectl apply -f foo.yaml