Merge pull request #90391 from stevsmit/OCPBUGS-34738-nodeport

Adds important note when altering node port range

Author: stevsmit

modules/nw-nodeport-service-range-edit.adoc

@@ -8,6 +8,14 @@
 
 You can expand the node port range for the cluster.
 
+[IMPORTANT]
+====
+You can expand the node port range into the protected port range, which is between 0 and 32767. However, after expansion, you cannot change the range. Attempting to change the range returns the following error:
+`The Network "cluster" is invalid: spec.serviceNodePortRange: Invalid value: "30000-32767": new service node port range 30000-32767 does not completely cover the previous range 0-32767`. 
+
+Before making changes, ensure that the new range you set is appropriate for your cluster.
+====
+
 .Prerequisites
 
 * Install the OpenShift CLI (`oc`).