feat(helm): Do not allow multiple celery beats (#13527)

Author: kiblik

helm/defectdojo/Chart.yaml

@@ -43,3 +43,5 @@ annotations:
       description: Convert existing comments to descriptors
     - kind: added
       description: Testing on the oldest officially supported k8s
+    - kind: added
+      description: Checker for maximal number of celery beats

helm/defectdojo/README.md

@@ -540,7 +540,7 @@ A Helm chart for Kubernetes to install DefectDojo
 | celery.beat.podAnnotations | object | `{}` | Annotations for the Celery beat pods. |
 | celery.beat.podSecurityContext | object | `{}` | Pod security context for the Celery beat pods. |
 | celery.beat.readinessProbe | object | `{}` | Enable readiness probe for Celery beat container. |
-| celery.beat.replicas | int | `1` |  |
+| celery.beat.replicas | int | `1` | Multiple replicas are not allowed (Beat is intended to be a singleton) because scaling to >1 will double-run schedules |
 | celery.beat.resources.limits.cpu | string | `"2000m"` |  |
 | celery.beat.resources.limits.memory | string | `"256Mi"` |  |
 | celery.beat.resources.requests.cpu | string | `"100m"` |  |

helm/defectdojo/values.schema.json

@@ -113,7 +113,9 @@
                             "type": "object"
                         },
                         "replicas": {
-                            "type": "integer"
+                            "description": "Multiple replicas are not allowed (Beat is intended to be a singleton) because scaling to \u003e1 will double-run schedules",
+                            "type": "integer",
+                            "maximum": 1
                         },
                         "resources": {
                             "type": "object",

helm/defectdojo/values.yaml

@@ -255,6 +255,8 @@ celery:
     podSecurityContext: {}
     # -- Enable readiness probe for Celery beat container.
     readinessProbe: {}
+    # @schema maximum:1
+    # -- Multiple replicas are not allowed (Beat is intended to be a singleton) because scaling to >1 will double-run schedules
     replicas: 1
     resources:
       requests: