#Lab: ArgoCD Application Deployment

Implement GitOps with ArgoCD.

#🎯 Objectives

Install ArgoCD in Kubernetes
Deploy applications declaratively
Sync and manage applications

#📋 Prerequisites

Kubernetes cluster
kubectl configured

#⏱️ Duration: 30 minutes

#Task 1: Install ArgoCD (5 min)

bash

1# Create namespace
2kubectl create namespace argocd
3
4# Install ArgoCD
5kubectl apply -n argocd -f https://raw.githubusercontent.com/argoproj/argo-cd/stable/manifests/install.yaml
6
7# Wait for pods
8kubectl wait --for=condition=Ready pods --all -n argocd --timeout=300s
9
10# Get initial admin password
11kubectl -n argocd get secret argocd-initial-admin-secret -o jsonpath="{.data.password}" | base64 -d

#Task 2: Access ArgoCD UI (5 min)

bash

1# Port forward
2kubectl port-forward svc/argocd-server -n argocd 8080:443 &
3
4# Open https://localhost:8080
5# Login: admin / <password from step 1>

#Install CLI (optional)

bash

1# Linux
2curl -sSL -o argocd-linux-amd64 https://github.com/argoproj/argo-cd/releases/latest/download/argocd-linux-amd64
3sudo install -m 555 argocd-linux-amd64 /usr/local/bin/argocd
4
5# Login
6argocd login localhost:8080

#Task 3: Create Application (10 min)

#Via CLI

bash

1argocd app create guestbook \
2  --repo https://github.com/argoproj/argocd-example-apps.git \
3  --path guestbook \
4  --dest-server https://kubernetes.default.svc \
5  --dest-namespace default

#Via Manifest

yaml

1apiVersion: argoproj.io/v1alpha1
2kind: Application
3metadata:
4  name: myapp
5  namespace: argocd
6spec:
7  project: default
8  source:
9    repoURL: https://github.com/argoproj/argocd-example-apps.git
10    targetRevision: HEAD
11    path: guestbook
12  destination:
13    server: https://kubernetes.default.svc
14    namespace: default
15  syncPolicy:
16    automated:
17      prune: true
18      selfHeal: true

bash

kubectl apply -f application.yaml

#Task 4: Sync and Manage (10 min)

bash

1# View applications
2argocd app list
3kubectl get applications -n argocd
4
5# Sync application
6argocd app sync guestbook
7
8# Get app details
9argocd app get guestbook
10
11# View history
12argocd app history guestbook
13
14# Rollback
15argocd app rollback guestbook <revision>
16
17# Delete
18argocd app delete guestbook

#✅ Success Criteria

ArgoCD installed and accessible
Application created from Git
Application synced successfully
Apps visible in UI

#🧹 Cleanup

bash

kubectl delete namespace argocd