Add validation check for out-of-range nodeport values

dask_kubernetes/operator/controller/controller.py

@@ -87,6 +87,17 @@ def build_scheduler_service_spec(cluster_name, spec, annotations, labels):
             "dask.org/component": "scheduler",
         }
     )
+
+    # Check if NodePort is out of range
+    try:
+        for port in spec.get("ports", []):
+            if port.get("nodePort", None) and (
+                port["nodePort"] < 30000 or port["nodePort"] > 32767
+            ):
+                raise ValueError("NodePort out of range")
+    except ValueError as e:
+        raise ValueError("Invalid nodePort value") from e
+
     return {
         "apiVersion": "v1",
         "kind": "Service",