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Argo CD Playground

What is Argo CD?

Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes.

argo-cd-schema

Features

  • Declarative tool for Continuous Delivery of the Kubernetes applications
  • Control plane that extends GitOps for Infrastructure deployments
  • Live State vs Desired Target State
  • Scalability, Multi-tenancy, Security, Extensibility
  • Extension of Kubernetes cluster

Demo Environment

  1. Install Argo CD via Helm Chart
  2. Connect the Git Repo (https://github.com/HivemindTechnologies/argocd-playground)
  3. Deploy the Application via Argo CD

demo-lab-schema

Install Argo CD via Helm Chart

  1. Create Argo CD namespace:
kubectl create namespace argocd
  1. Install Argo CD with Helm Chart inside the Namespace created at the point above:
helm repo add argo https://argoproj.github.io/argo-helm /
helm install argocd argo/argo-cd -n argocd

Connect the Git Repo

  1. Open the Argo CD UI by port-forwarding the service:
kubectl port-forward svc/argocd-server -n argocd 8080:443
  1. Open the Argo CD UI in the browser: https://localhost:8080
  2. Login with the default credentials by using the password stored in the secret argocd-initial-admin-secret:
kubectl get secret argocd-initial-admin-secret -n argocd -o jsonpath="{.data.password}" | base64 -d
  1. Click on Settings → Repositories
  2. Click on Connect Repo
  3. Fill the form with all the Git repo information and click on Connect

Deploy the Application via Argo CD

  1. Create the the Argo CD application manifest file called f.i. cool-app.yaml:
apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: cool-app
  namespace: argocd
spec:
  project: default
  source:
    path: cool-app
    repoURL: https://github.com/HivemindTechnologies/argocd-playground.git
    targetRevision: main
  destination:
    namespace: cool-app
    server: https://kubernetes.default.svc
  syncPolicy:
    automated:
      selfHeal: true
      prune: true
    syncOptions:
      - CreateNamespace=true
  1. Deploy the application manifest in Kubernetes namespace called argocd:
kubectl apply -f cool-app.yaml -n argocd