/argocd-app-config

Install and configure ArgoCD in a cluster

  1. To Install ArgoCD
kubectl create namespace argocd
kubectl apply -n argocd -f https://raw.githubusercontent.com/argoproj/argo-cd/stable/manifests/install.yaml
  1. Access ArgoCD UI
kubectl port-forward svc/argocd-server -n argocd 8080:443

The default username is admin. Retrieve the password with:

kubectl -n argocd get secret argocd-initial-admin-secret -o jsonpath="{.data.password}" | base64 -d
  1. Create an ArgoCD Application to Watch the Terraform Repo and apply the yaml
kubectl apply -f argocd-application.yaml

Access ArgoCD UI with NodePort

  1. Patch the argocd-server Service
kubectl patch svc argocd-server -n argocd -p '{"spec": {"type": "NodePort"}}'
  1. Get NodePort service
kubectl get svc argocd-server -n argocd

The output will show a port in the NodePort range (e.g., 30000-32767).

  1. Access the ArgoCD UI:
  • Find the external IP of one of your nodes.
  • Access the ArgoCD UI at https://:.

Deploy vCluster using ArgoCD

Assumption - ArgoCD is deployed on the same cluster where the application needs to be deployed.

  1. Configure your app similar to this one - https://github.com/sowmyav27/argocd-app-config/blob/main/vcluster/my-vcluster-app.yaml
  2. Configure argoCD application like - https://github.com/sowmyav27/argocd-app-config/blob/main/argocd-application.yaml
  3. Apply the argocd-application.yaml yaml in the cluster manually using
kubectl apply -f argocd-application.yaml
  1. You will see a vCluster is deployed using command
vcluster list

     NAME  | NAMESPACE | STATUS  |    VERSION    | CONNECTED |  AGE   
  ---------+-----------+---------+---------------+-----------+--------
    argocd | argocd    | Running | 0.21.0-beta.6 |           | 6m43s
  1. Then to test auto-sync - make any changes in github - https://github.com/sowmyav27/argocd-app-config/blob/main/argocd-application.yaml - example: changed vCluster version to 0.20.3
  2. You will notice the application in ArgoCD will be in Out of Sync status.
  3. Because auto-sync is configured, it will automatically sync the changes to the deployed application (Else, in the ArgoCD UI --> click on Application Details --> Under SYNC POLICY --> Select Enable auto-Sync
  4. You will see version of vCluster will changed
vcluster list
  
     NAME  | NAMESPACE | STATUS  | VERSION | CONNECTED |  AGE    
  ---------+-----------+---------+---------+-----------+---------
    argocd | argocd    | Running | 0.20.3  |           | 19m44s