Update Argo CD configuration to improve handling of managed fields and enhance compatibility with server-side apply, ensuring smoother deployments and conflict resolution.

clusters/noble/bootstrap/argocd/app-of-apps/kube-prometheus-application.yaml

@@ -13,6 +13,7 @@ spec:
       chart: kube-prometheus-stack
       targetRevision: 82.15.1
       helm:
+        skipCrds: true
         releaseName: kube-prometheus
         valueFiles:
           - $values/clusters/noble/bootstrap/kube-prometheus-stack/values.yaml
@@ -23,8 +24,8 @@ spec:
     server: https://kubernetes.default.svc
     namespace: monitoring
   # Manual sync: Ansible helm runs first; enable automation after cutover (see ../README.md §5).
-  # ServerSideApply: kube-prometheus-stack CRDs exceed the 256KiB **last-applied-configuration** limit
-  # when applied client-side (Argo/kubectl); SSA avoids that annotation.
+  # ServerSideApply: helps large manifests Argo applies directly (CRDs are handled via **helm.skipCrds** +
+  # chart **crds.upgradeJob** server-side apply — see values.yaml).
   syncPolicy:
     syncOptions:
       - CreateNamespace=true

clusters/noble/bootstrap/kube-prometheus-stack/values.yaml

@@ -24,6 +24,15 @@ prometheusOperator:
     certManager:
       enabled: true
 
+# CRDs: Argo CD applies chart CRDs with client-side apply → **last-applied-configuration** can exceed 256KiB.
+# **`crds.upgradeJob`** runs a pre-sync Helm hook that applies CRDs with **`kubectl apply --server-side`**.
+# Pair with **`helm.skipCrds: true`** on the Argo Application so Argo does not patch those CRDs itself.
+# Ref: https://github.com/argoproj/argo-cd/issues/11269
+crds:
+  upgradeJob:
+    enabled: true
+    forceConflicts: true
+
 # --- Longhorn-backed persistence (default chart storage is emptyDir) ---
 alertmanager:
   alertmanagerSpec: