argo ApplicationSet to deploy an application to two argo cd instances at the same time

config-a.json

{
  "appName": "production-deployment",
  "destNamespace": "prod"
}

config-b.json

{
  "appName": "production-deployment",
  "destNamespace": "prod"
}

example.yaml

apiVersion: argoproj.io/v1alpha1
kind: ApplicationSet
metadata:
  annotations:
    argocd.argoproj.io/sync-wave: "3"
  labels:
    app.kubernetes.io/managed-by: argocd
  name: gitopsexample-a
  namespace: argocd
spec:
  generators:
    - git:
        files:
          - path: myapps/**/production/config-a.json
        repoURL: git@github.com:hoelzel-it/gitpos.git
        revision: HEAD
  syncPolicy: {}
  template:
    metadata:
      labels:
        app.kubernetes.io/managed-by: argocd
        app.kubernetes.io/name: "{{ appName }}"
      name: "{{ appName }}"
      namespace: argocd
    spec:
      destination:
        namespace: "{{ destNamespace }}"
        server: https://kubernetes.default.svc
      project: production
      source:
        path: "{{ path }}"
        repoURL: git@github.com:hoelzel-it/gitopsexample.git
        targetRevision: HEAD
      syncPolicy:
        automated:
          allowEmpty: true
          prune: true
          selfHeal: true
status: {}
apiVersion: argoproj.io/v1alpha1
----
kind: ApplicationSet
metadata:
  annotations:
    argocd.argoproj.io/sync-wave: "3"
  labels:
    app.kubernetes.io/managed-by: argocd
  name: gitopsexample-b
  namespace: argocd
spec:
  generators:
    - git:
        files:
          - path: myapps/**/production/config-b.json
        repoURL: git@github.com:hoelzel-it/gitpos.git
        revision: HEAD
  syncPolicy: {}
  template:
    metadata:
      labels:
        app.kubernetes.io/managed-by: argocd
        app.kubernetes.io/name: "{{ appName }}"
      name: "{{ appName }}"
      namespace: argocd
    spec:
      destination:
        namespace: "{{ destNamespace }}"
        server: <theothercluster>
      project: production
      source:
        path: "{{ path }}"
        repoURL: git@github.com:hoelzel-it/gitopsexample.git
        targetRevision: HEAD
      syncPolicy:
        automated:
          allowEmpty: true
          prune: true
          selfHeal: true
status: {}