try appset

cluster/external-secrets-appset.yaml

@@ -0,0 +1,41 @@
+apiVersion: argoproj.io/v1alpha1
+kind: ApplicationSet
+metadata:
+  name: external-secrets
+  namespace: openshift-gitops
+spec:
+  generators:
+    - clusters: {} # Automatically use all clusters defined within Argo CD
+    # - list:
+    #     elements:
+    #       - cluster: dev
+    #         url: https://kubernetes-dev.example.com
+    #       - cluster: prod
+    #         url: https://kubernetes-prod.example.com
+  template:
+    metadata:
+      name: '{{cluster}}-external-secrets'
+    spec:
+      project: apps
+      source:
+        repoURL: 'https://github.com/rblundon/homelab.git'
+        targetRevision: HEAD
+        path: 'cluster/external-secrets/overlays/{{cluster}}'
+      destination:
+        server: '{{url}}'
+        namespace: external-secrets
+      syncPolicy:
+        automated:
+          prune: true
+          selfHeal: true
+        syncOptions:
+        - RespectIgnoreDifferences=true
+        - CreateNamespace=true
+        managedNamespaceMetadata:
+          labels:
+            argocd.argoproj.io/managed-by: openshift-gitops
+      ignoreDifferences:
+      - group: apps
+        kind: Deployment
+        jsonPointers:
+        - /spec/replicas

cluster/external-secrets/overlays/in-cluster/kustomization.yaml

@@ -0,0 +1,5 @@
+bases:
+  - ../../base
+
+# patches:
+#   - deployment.yaml