From c47c79c3dcf9c3a0a7f2fe95cdde535c224e8e60 Mon Sep 17 00:00:00 2001
From: David Aparicio <david.aparicio@free.fr>
Date: Thu, 29 Jan 2026 09:33:02 +0100
Subject: [PATCH] Enables deployment strategy configuration within the Helm
 chart.

---
 pkg/helm/README.md                 | 3 +++
 pkg/helm/templates/deployment.yaml | 9 +++++++++
 pkg/helm/values.yaml               | 6 ++++++
 3 files changed, 18 insertions(+)

diff --git a/pkg/helm/README.md b/pkg/helm/README.md
index 4c7f3e074..41ec0cf6c 100644
--- a/pkg/helm/README.md
+++ b/pkg/helm/README.md
@@ -40,3 +40,6 @@ The chart should dump its version and appVersion in the Chart.yaml file every re
 | `ingress.enabled` | Ingress resource creation | `false` |
 | `ingress.hostname` | Ingress resource hostname | `"pgadmin4.local"` |
 | `ingress.tlsSecret` | Ingress tls secret name | `""` |
+| `strategy.type` | Deployment strategy type (RollingUpdate or Recreate) | Kubernetes default (RollingUpdate) |
+| `strategy.rollingUpdate.maxSurge` | Maximum number of pods that can be created over the desired replicas | Kubernetes default (25%) |
+| `strategy.rollingUpdate.maxUnavailable` | Maximum number of pods that can be unavailable during the update | Kubernetes default (25%) |
diff --git a/pkg/helm/templates/deployment.yaml b/pkg/helm/templates/deployment.yaml
index d2dbd9e8f..befb55dd6 100644
--- a/pkg/helm/templates/deployment.yaml
+++ b/pkg/helm/templates/deployment.yaml
@@ -10,6 +10,15 @@ metadata:
   {{- end }}
 spec:
   replicas: {{ .Values.replicas }}
+  {{- if .Values.strategy }}
+  strategy:
+    type: {{ .Values.strategy.type }}
+    {{- if and (eq .Values.strategy.type "RollingUpdate") .Values.strategy.rollingUpdate }}
+    rollingUpdate:
+      maxSurge: {{ .Values.strategy.rollingUpdate.maxSurge }}
+      maxUnavailable: {{ .Values.strategy.rollingUpdate.maxUnavailable }}
+    {{- end }}
+  {{- end }}
   selector:
     matchLabels:
       app: {{ default "pgadmin4" .Values.commonLabels.app }}
diff --git a/pkg/helm/values.yaml b/pkg/helm/values.yaml
index 873841480..8d844af6c 100644
--- a/pkg/helm/values.yaml
+++ b/pkg/helm/values.yaml
@@ -25,6 +25,12 @@ extraDeploy: []
 
 replicas: 1
 
+# strategy:
+#   type: RollingUpdate
+#   rollingUpdate:
+#     maxSurge: 25%
+#     maxUnavailable: 25%
+
 containerPort: 5050
 disablePostfix: true
 enableServiceLinks: false