Deploy Helm Application with ArgoCD

ArgoCD is a popular tool for Continuous Deployment (CD) of Kubernetes applications. It allows users to automate the deployment and management of applications in a Kubernetes cluster. Helm is a popular package manager for Kubernetes, which helps in installing, upgrading, and managing applications. In this article, we will learn how to deploy a Helm chart using ArgoCD.

Table of Contents

1. Pre-requisites
2. Installing ArgoCD
3. Configuring ArgoCD
4. Deploying Helm Chart with ArgoCD
5. Verifying the Deployment

Pre-requisites:

• A Kubernetes cluster
• Helm installed on the local system
• kubectl installed on the local system

Installing ArgoCD:

1. Create a namespace for ArgoCD:

   kubectl create namespace argocd
   

2. Add the ArgoCD repository to the Helm client:

   helm repo add argo https://argoproj.github.io/argo-helm
   

3. Install ArgoCD using Helm:

   helm install argocd argo/argo-cd -n argocd
   

Configuring ArgoCD:

1. Get the ArgoCD admin password:

   kubectl -n argocd get secret argocd-initial-admin-secret -o jsonpath="{.data.password}" | base64 -d
   

2. Login to the ArgoCD Web UI using the admin password:

   argocd login <ARGOCD_SERVER> --username=admin --password=<ARGOCD_PASSWORD>
   

3. Create a new application using the ArgoCD Web UI, by specifying the Helm chart location, values file, and target namespace.

Deploying Helm Chart with ArgoCD:

1. Create a Helm values file with the required configuration:

   cat <<EOF > values.yaml
   replicaCount: 3
   image:
     repository: nginx
     tag: stable
     pullPolicy: IfNotPresent
   service:
     name: nginx
     type: ClusterIP
     port: 80
   EOF
   

2. Install the Helm chart using the values file:

   helm install nginx stable/nginx -f values.yaml
   

3. Sync the ArgoCD application to deploy the Helm chart:

   argocd app sync <APP_NAME>
   

Verifying the Deployment:

1. Get the list of pods in the target namespace:

   kubectl get pods -n <NAMESPACE>
   

2. Check the logs of the deployed application:

   kubectl logs <POD_NAME> -n <NAMESPACE>
   

In this article, we learned how to deploy a Helm chart using ArgoCD. With ArgoCD, we can automate the deployment and management of Helm applications in a Kubernetes cluster. We also learned how to configure ArgoCD and deploy a sample Helm chart using a values file. With ArgoCD, we can ensure that our Kubernetes applications are deployed and managed in a consistent and efficient manner.

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That's it for this post. Keep practicing and have fun. Leave your comments if any.