ArgoCD GitOps ApplicationSet Example

gitops-application-set.yaml

apiVersion: argoproj.io/v1alpha1
kind: ApplicationSet
metadata:
  name: guestbook
spec:
  generators:
  - list:
      # Parameters are generated based on this cluster list, to be
      # substituted into the template below.
      elements: 
      - cluster: engineering-dev
        url: https://1.2.3.4 # faux cluster URLs
      - cluster: engineering-prod
        url: https://2.4.6.8
      - cluster: finance-preprod
        url: https://9.8.7.6

  # 'template' is an Argo CD Application template, with support 
  # for parameter substitution using parameters generated above.
  template: 
    metadata:
      # The 'cluster' parameter from above is substituted here
      name: '{{cluster}}-guestbook'
    spec:
      project: default
      source:
        repoURL: https://github.com/argoproj-labs/applicationset.git
        targetRevision: HEAD
        # 'cluster' name is also substituted here
        path: examples/list-generator/guestbook/{{cluster}}
      destination:
        # The cluster 'url', used by Argo CD to access the cluster, is 
        # substituted here.
        server: '{{url}}'
        namespace: guestbook