How do you install ArgoCD on a Kubernetes cluster?

The standard installation uses the official ArgoCD manifest published in the ArgoCD GitHub repository. There are two variants: non-HA (single replica, suitable for development) and HA (multiple replicas for the API server and application controller, for production).

# Create the argocd namespace
kubectl create namespace argocd

# Install ArgoCD (non-HA)
kubectl apply -n argocd -f \
  https://raw.githubusercontent.com/argoproj/argo-cd/stable/manifests/install.yaml

After applying, verify all pods reach Running state:

kubectl get pods -n argocd

By default, the argocd-server Service is of type ClusterIP. To access the UI locally, use port-forwarding:

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

The initial admin password is auto-generated and stored in the secret argocd-initial-admin-secret. Retrieve it with:

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

Log in via CLI:

argocd login localhost:8080 --username admin --password <password> --insecure

For production expose argocd-server via an Ingress or LoadBalancer Service with a valid TLS certificate. The Helm chart (argo/argo-cd) is an alternative installation method that provides easier configuration management.

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