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Lab 12.3 - GitOps with ArgoCD

Lab Objectives​

By the end of this lab, you will be able to:

  • Install ArgoCD in Kubernetes.
  • Understand the GitOps concept.
  • Configure a Git repository as a source.
  • Deploy an application with ArgoCD.
  • Synchronize deployments.

Estimated Duration​

60-75 minutes

Prerequisites​

  • kubectl installed and configured.
  • Working local Kubernetes cluster.
  • A Git repository (optional, can use a local repo).

Part 1: Installing ArgoCD​

Step 1.1: Install ArgoCD​

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

Wait for the Pods to be ready:

kubectl wait --for=condition=ready pod -l app.kubernetes.io/name=argocd-server -n argocd --timeout=300s

Part 2: Accessing ArgoCD​

Step 2.1: Get the Admin Password​

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

Step 2.2: Port-Forward​

kubectl port-forward svc/argocd-server -n argocd 8080:443

Access https://localhost:8080 (accept the self-signed certificate).

Log in with:

  • Username: admin
  • Password: (the one obtained in the previous step)

Part 3: Configuring an Application​

Step 3.1: Create an Application via CLI​

Create an ArgoCD application:

argocd app create my-app \
  --repo https://github.com/example/repo.git \
  --path manifests \
  --dest-server https://kubernetes.default.svc \
  --dest-namespace default

Step 3.2: Synchronize​

argocd app sync my-app

Lab Summary​

In this lab, you installed ArgoCD and configured a GitOps application. You learned the basic concepts of GitOps.

Next Steps​

The final lab of this module is the complete final project.

Lab 12.4: Complete Final Project

Lab created on: December 2024