application.yaml

# Make sure the configuration corresponds to documentation
apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
  name: myapp-argo-application
  namespace: argocd
spec:
  project: default # we can group multiple projects here

  source: 
    repoURL: https://github.com/Soloveykos/ArgoCDExample.git
    targetRevision: HEAD
    path: dev # to be able to sync the repo with ArgoCD
  destination:
    server: https://kubernetes.default.svc # internal service name for k8s api server (command kubectl get svc)
    namespace: myapp # need to configure if this myapp namespace not exist (see below)

# sync the creation of the namespace.
  syncPolicy:
    syncOptions:
    - CreateNamespace=true

# enable syncronization because it's not automatically enabled
    automated:
      # undo or override with the git repository state:
      selfHeal: true

      # if we rename component or deleted service.yaml - we should delete it in the cluster also:
      prune: true
      
      # default regularly automatic sync checks every 3 mins