GitOps Pipeline with Argo CD and Argo Rollouts

This repository contains the setup and implementation of a GitOps pipeline using Argo CD for continuous deployment and Argo Rollouts for canary releases in a Kubernetes cluster.

I also created a video for this assignment => Video

Task 1: Setup and Configuration

Create a GitHub Repository

• Created a GitHub repository to host the source code and Kubernetes manifests name ArgoCD-project.

Create Dockerfile

• Created a Dockerfile to build the docker image for the Webapp.

Manifests file for the Cluster

• I have added 2 manifests files.

GitHub Actions workflow

• Created a GitHub actions workflow do to the continous integration part.
• Built a Docker image for the web application.
• Pushed the Docker image to DockerHub.
• Update the manifest file with the new image

Kubernetes Cluster Setup

• I have used minikube for this project, where we had 1 node (control plane)

Install Argo CD

• Followed the official Argo CD documentation to install and set up Argo CD in the Kubernetes cluster.

Task 2: Deploying with GitOps Pipeline

Deploy the Application Using Argo CD

• Modified the Kubernetes manifests in the repository to utilize the Docker image.
• Configured Argo CD to monitor the repository and automatically deploy changes to the Kubernetes cluster.

Task 3: Install Argo Rollouts and Implementing a Canary Release

Install Argo Rollouts

• Installed the Argo Rollouts controller in the Kubernetes cluster as per the official guide.

Define a Rollout Strategy

• Modified the deployment.yaml file to Argo Rollouts kind.
• Specified a canary release strategy in the rollout definition.

Trigger a Rollout

• Made changes to the application, updated the Docker image, and pushed the new version to the registry.
• Updated the rollout definition to use the new image with Github actions.

Monitor the Rollout

• Utilized Argo Rollouts Dashboard to monitor the deployment of the new version, ensuring the canary release successfully completed.

Repository Structure

• .github/workflows/argocicd.yaml : Github action workflow file
• manifests/: Contains Kubernetes manifests for deploying the application.
• Dockerfile: Dockerfile for building the application Docker image.
• README.md: Documentation explaining the setup and implementation of the GitOps pipeline.

Clean Up

To cleanly remove all resources created during this assignment from the Kubernetes cluster, follow these steps:

1. Delete the Argo CD installation using the following command:

   kubectl delete -n argocd -f https://raw.githubusercontent.com/argoproj/argo-cd/stable/manifests/install.yaml

2. Now delete the namespace with the command:

   kubectl delete ns argocd

3. Delete the Argo Rollout installation using the following command:

   kubectl delete -n argo-rollouts -f https://github.com/argoproj/argo-rollouts/releases/latest/download/install.yaml

4. Now delete the namespace with the command:

   kubectl delete ns argo-rollouts

5. Now delete the Webapp namespace that we have created whil add application in argo dashboard

   kubectl delete ns webapp